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Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2011	Feb. 17, 2012	Jun. 30, 2011
Document And Entity Information [Abstract]
Entity Registrant Name	PACKAGING CORP OF AMERICA
Entity Central Index Key	0000075677
Document Type	10-K
Document Period End Date	Dec. 31, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 2,791,932,385
Entity Common Stock, Shares Outstanding		98,426,015

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 156,313	$ 196,556
Accounts receivable, net of allowance for doubtful accounts and customer deductions of $5,034 and $5,413 as of December 31, 2011 and 2010, respectively	319,988	294,192
Inventories	254,675	241,142
Prepaid expenses and other current assets	18,298	17,555
Deferred income taxes	62,789	50,232
Total current assets	812,063	799,677
Property, plant and equipment, net	1,476,654	1,337,986
Goodwill	58,214	38,854
Other intangible assets, net	25,042	10,975
Other long-term assets	40,526	38,418
Total assets	2,412,499	2,225,910
Current liabilities:
Short-term debt and current maturities of long-term debt	15,000	109,000
Capital lease obligations	718	670
Accounts payable	154,855	155,163
Dividends payable	19,680	15,351
Accrued interest	12,584	12,598
Federal and state income taxes payable	10,404	2,601
Accrued liabilities	163,259	109,227
Total current liabilities	376,500	404,610
Long-term liabilities:
Long-term debt	793,448	549,099
Capital lease obligations	21,114	21,832
Deferred income taxes	11,924	9,190
Pension and postretirement benefit plans	148,686	97,914
Cellulosic biofuel tax reserve	102,051	102,051
Other long-term liabilities	29,866	32,213
Total long-term liabilities	1,107,089	812,299
Stockholders' equity:
Common stock (par value $0.01 per share, 300,000,000 shares authorized, 98,324,974 and 102,308,231 shares issued as of December 31, 2011 and 2010, respectively)	983	1,023
Additional paid in capital	351,804	362,248
Retained earnings	673,960	690,111
Accumulated other comprehensive income (loss), net of tax:
Unrealized (loss) gain on treasury locks, net	(23,289)	2,164
Unrealized loss on foreign exchange contracts	(413)	(607)
Unfunded employee benefit obligations	(74,076)	(45,938)
Total accumulated other comprehensive loss	(97,778)	(44,381)
Common stock held in treasury, at cost (2,355 shares as of December 31, 2011)	(59)
Total stockholders' equity	928,910	1,009,001
Total liabilities and stockholders' equity	$ 2,412,499	$ 2,225,910

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts receivable and customer deductions	$ 5,034	$ 5,413
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	98,324,974	102,308,231
Common stock held in treasury, shares	2,355

Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Income [Abstract]
Net sales	$ 2,620,111	$ 2,435,606	$ 2,147,589
Cost of sales	(2,078,165)	(1,903,406)	(1,721,012)
Gross profit	541,946	532,200	426,577
Selling and administrative expenses	(193,939)	(182,489)	(173,445)
Corporate overhead	(64,535)	(58,100)	(54,580)
Alternative fuel mixture tax credits		(86,265)	168,437
Other expense, net	(10,723)	(19,964)	(14,535)
Income from operations	272,749	185,382	352,454
Interest expense, net	(29,245)	(32,278)	(35,483)
Income before taxes	243,504	153,104	316,971
(Provision) benefit for income taxes	(85,477)	52,331	(51,076)
Net income	$ 158,027	$ 205,435	$ 265,895
Weighted average common shares outstanding
Basic	99,281	101,678	101,577
Diluted	100,376	102,608	102,358
Net income per common share
Basic	$ 1.59	$ 2.02	$ 2.62
Diluted	1.57	2.00	2.60
Dividends declared per common share	$ 0.80	$ 0.60	$ 0.60

Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning Balance at Dec. 31, 2008	$ 1,024		$ 379,104	$ 342,072	$ (38,251)	$ 683,949
Beginning Balance, Shares at Dec. 31, 2008	102,397,952
Common stock dividends declared				(61,612)		(61,612)
Restricted stock grants and cancellations	$ 4		(222)			(218)
Restricted stock grants and cancellations, Shares	434,605
Exercise of stock options	$ 2		2,243			$ 2,245
Exercise of stock options, Shares	185,801					185,801
Share-based compensation expense			6,371			$ 6,371
Comprehensive income (loss):
Net income				265,895		265,895
Amortization of treasury locks, net of tax					(1,846)	(1,846)
Amortization of unfunded employee benefit obligations, net of tax					3,304	3,304
Unfunded employee benefit obligations, net of tax					757	757
Total comprehensive income						268,110
Ending Balance at Dec. 31, 2009	$ 1,030		387,496	546,355	(36,036)	898,845
Ending Balance, Shares at Dec. 31, 2009	103,018,358
Common stock repurchases and retirements	$ (17)		(38,884)			(38,901)
Common stock repurchases and retirements, Shares	(1,665,392)
Common stock dividends declared				(61,679)		(61,679)
Restricted stock grants and cancellations	$ 6		507			513
Restricted stock grants and cancellations, Shares	560,845
Exercise of stock options	$ 4		8,033			$ 8,037
Exercise of stock options, Shares	394,420					394,420
Share-based compensation expense			7,006			$ 7,006
Other			(1,910)			(1,910)
Comprehensive income (loss):
Net income				205,435		205,435
Amortization of treasury locks, net of tax					(1,309)	(1,309)
Unrealized losses on treasury locks, net of tax					(1,039)	(1,039)
Unrealized gains (losses) on foreign currency exchange contracts, net of tax					(607)	(607)
Amortization of unfunded employee benefit obligations, net of tax					3,583	3,583
Unfunded employee benefit obligations, net of tax					(8,973)	(8,973)
Total comprehensive income						197,090
Ending Balance at Dec. 31, 2010	$ 1,023		362,248	690,111	(44,381)	1,009,001
Ending Balance, Shares at Dec. 31, 2010	102,308,231
Common stock repurchases and retirements	$ (49)	$ (59)	(29,098)	(93,871)		(123,077)
Common stock repurchases and retirements, Shares	(4,896,666)	(2,355)
Common stock dividends declared				(80,307)		(80,307)
Restricted stock grants and cancellations	$ 6		506			512
Restricted stock grants and cancellations, Shares	569,724
Exercise of stock options	$ 3		7,733			$ 7,736
Exercise of stock options, Shares	343,685					343,685
Share-based compensation expense			9,736			$ 9,736
Other			679			679
Comprehensive income (loss):
Net income				158,027		158,027
Amortization of treasury locks, net of tax					(1,129)	(1,129)
Settlement of treasury lock, net of tax					6,058	6,058
Unrealized losses on treasury locks, net of tax					(30,382)	(30,382)
Amortization of net loss on foreign currency exchange contracts, net of tax					4	4
Unrealized gains (losses) on foreign currency exchange contracts, net of tax					190	190
Amortization of unfunded employee benefit obligations, net of tax					3,806	3,806
Unfunded employee benefit obligations, net of tax					(31,944)	(31,944)
Total comprehensive income						104,630
Ending Balance at Dec. 31, 2011	$ 983	$ (59)	$ 351,804	$ 673,960	$ (97,778)	$ 928,910
Ending Balance, Shares at Dec. 31, 2011	98,324,974	(2,355)

Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Changes In Stockholders' Equity [Abstract]
Amortization of treasury locks, tax effect	$ 700	$ 500
Settlement of treasury locks, tax effect	3,900
Unrealized losses on treasury locks, tax effect	19,300	1,900
Amortization of net loss on foreign currency exchange contracts, tax effect	30
Unrealized losses on foreign currency exchange contracts, tax effect	100	400
Amortization of unfunded employee benefit obligations, tax effect	2,400	2,300	$ 2,200
Unfunded employee benefit obligations, tax effect	$ 20,300	$ 5,700	$ 500

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash Flows from Operating Activities:
Net income	$ 158,027	$ 205,435	$ 265,895
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	163,973	156,298	151,217
Amortization of financing costs	712	648	772
Amortization of net gain on treasury lock	(1,846)	(1,846)	(1,846)
Share-based compensation expense	9,736	7,006	7,261
Deferred income tax provision	27,347	(120,579)	(13,819)
Loss on disposals of property, plant and equipment	7,137	8,865	6,605
Alternative fuel mixture tax credits receivable		127,811	(127,811)
(Increase) decrease in assets -
Accounts receivable	(16,946)	(50,256)	13,602
Inventories	(8,333)	(28,352)	(5,498)
Prepaid expenses and other current assets	(616)	(3,956)	(9,458)
Increase (decrease) in liabilities -
Accounts payable	(694)	25,367	22,475
Accrued liabilities	6,052	11,254	4,764
Other, net	965	12,225	(8,028)
Net cash provided by operating activities	345,514	349,920	306,131
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(280,213)	(320,200)	(114,197)
Additions to other long term assets	(13,055)	(2,627)	(2,105)
Acquisition of businesses, net of cash acquired	(57,340)		(3,136)
Proceeds from disposals of property, plant and equipment	443	1,513	114
Net cash used for investing activities	(350,165)	(321,314)	(119,324)
Cash Flows from Financing Activities:
Proceeds from long-term debt	150,000
Payments on long-term debt	(670)	(626)	(606)
Financing costs paid	(2,041)
Settlement of treasury lock	9,910
Common stock dividends paid	(76,012)	(61,798)	(76,898)
Repurchases of common stock	(125,027)	(38,901)
Proceeds from exercise of stock options	7,016	7,496	1,615
Excess tax benefits from share-based awards	1,232	1,052	412
Net cash used for financing activities	(35,592)	(92,777)	(75,477)
Net decrease in cash and cash equivalents	(40,243)	(64,171)	111,330
Cash and cash equivalents, beginning of year	196,556	260,727	149,397
Cash and cash equivalents, end of year	$ 156,313	$ 196,556	$ 260,727

Nature Of Business

12 Months Ended

Dec. 31, 2011

Nature Of Business [Abstract]

Nature Of Business

1.	NATURE OF BUSINESS

Packaging Corporation of America ("PCA" or the "Company") was incorporated on January 25, 1999. On April 12, 1999, PCA acquired the containerboard and corrugated packaging products business of Pactiv Corporation ("Pactiv"), formerly known as Tenneco Packaging Inc., a wholly owned subsidiary of Tenneco Inc. PCA had no operations from the date of incorporation on January 25, 1999 to April 11, 1999.

The Company is comprised of mills and corrugated manufacturing operations. The mill operations (the "Mills") consist of two kraft linerboard mills located in Counce, Tennessee, and Valdosta, Georgia, and two medium mills located in Filer City, Michigan, and Tomahawk, Wisconsin. The Mills transfer the majority of their containerboard produced to PCA's corrugated products plants.

PCA's corrugated manufacturing operations consist of 71 plants, with 41 operating as combining operations, or corrugated plants, and 30 as sheet plants; a technical and development center, six graphic design centers and a complement of packaging supplies and distribution centers. All plants are located in the continental United States. Corrugated plants combine linerboard and medium into sheets that are converted into corrugated shipping containers, point-of-sale graphics packaging, point-of-purchase displays and other specialized packaging. Sheet plants purchase sheets primarily from PCA corrugated products plants to use in the finished corrugated products converting process. The corrugated manufacturing operations sell to diverse customers primarily in North America.

As of December 31, 2011, PCA had approximately 8,300 employees. Approximately 2,500 of these employees were salaried and approximately 5,800 were hourly. Approximately 75% of its hourly employees are represented by unions. The majority of its unionized employees are represented by the United Steel Workers (USW), the International Brotherhood of Teamsters (IBT), and the International Association of Machinists (IAM).

Based on an agreement reached with the USW in August 2008, the existing labor agreements at PCA's containerboard mills covering USW-represented employees (88% of mill hourly workforce) were extended five years. With this extension, the USW contracts at the Company's mills are currently set to expire between September 2013 and June 2015. Agreements with other union mill employees (12% of mill hourly workforce) expire between June 2012 and October 2014. Based on an agreement reached with the USW in April 2009, the labor agreement at 25 corrugated plants covering USW represented employees was extended up to five years. Contracts for unionized corrugated products plant employees expire between February 2012 and December 2017. The Company is currently in negotiations to renew or extend any union contracts that have recently expired or are expiring in the near future.

Summary Of Significant Accounting Policies

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Summary Of Significant Accounting Policies

2.	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Consolidation

The accompanying consolidated financial statements of PCA include all majority-owned subsidiaries. All intercompany transactions have been eliminated. The Company has one joint venture that is accounted for under the equity method.

Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts in the financial statements and the accompanying notes. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and cash equivalents include all cash balances and highly liquid investments with a maturity, when acquired, of three months or less. Cash equivalents are stated at cost, which approximates market.

Accounts Receivable

The collectibility of PCA's accounts receivable is based upon a combination of factors. In circumstances where a specific customer is unable to meet its financial obligations to PCA (e.g., bankruptcy filings, substantial downgrading of credit sources), a specific reserve for bad debts is recorded against amounts due to the Company to reduce the net recorded receivable to the amount the Company reasonably believes will be collected. For all other customers, reserves for bad debts are recognized based on historical collection experience. If collection experience deteriorates (i.e., higher than expected defaults or an unexpected material adverse change in a major customer's ability to meet its financial obligations to the Company), the estimate of the recoverability of amounts due could be reduced by a material amount.

The customer deductions reserve represents the estimated amount required for customer returns, allowances and earned discounts. Based on the Company's experience, customer returns, allowances and earned discounts have averaged 1.0% of gross selling price. Accordingly, PCA reserves 1.0% of its open customer accounts receivable balance for these items.

At December 31, 2011 and 2010, the allowance for doubtful accounts was $1.9 million and $2.5 million, respectively. The reserve for customer deductions of $3.1 million and $2.9 million at December 31, 2011 and 2010, respectively, are also included as a reduction of the accounts receivable balance.

Inventories

With the exception of inventories at several corrugated products plants acquired since 2004, raw materials, work in process and finished goods are valued using the last-in, first-out ("LIFO") cost method. Inventories at the acquired plants are valued at the first-in, first-out ("FIFO") cost method. Supplies and materials are valued using a moving average cost. All inventories are stated at the lower of cost or market and include all costs directly associated with manufacturing products: materials, labor and manufacturing overhead. Inventories valued using the LIFO method totaled $197.3 million and $199.5 million, respectively, as of December 31, 2011 and 2010, compared to total inventory values (before the LIFO inventory reserve) of $324.0 million and $309.2 million for the same respective periods.

The components of inventories are as follows:


	December 31,
	2011			2010
	(In thousands)
Raw materials	$	126,489		$	126,401
Work in process		7,610			6,395
Finished goods		74,391			73,710
Supplies and materials		115,541			102,720

Inventories at FIFO or average cost		324,031			309,226
Excess of FIFO or average cost over LIFO cost		(69,356	)		(68,084	)

Inventories, net	$	254,675		$	241,142

Property, Plant and Equipment

Property, plant and equipment are recorded at cost, and consist of the following:


	December 31,
	2011			2010
	(In thousands)
Land and land improvements	$	102,483		$	98,197
Buildings		377,664			350,301
Machinery and equipment		3,045,145			2,753,258
Construction in progress		66,098			212,931
Other		27,170			24,834

Property, plant and equipment, at cost		3,618,560			3,439,521
Less accumulated depreciation		(2,141,906	)		(2,101,535	)

Property, plant and equipment, net	$	1,476,654		$	1,337,986

The amount of interest capitalized related to construction in progress was $7.1 million, $4.8 million and $0.9 million for the years ended December 31, 2011, 2010 and 2009, respectively.

Depreciation is computed on the straight-line basis over the estimated useful lives of the related assets. Assets under capital leases are depreciated on the straight-line method over the term of the lease or the useful life, if shorter. The following lives are used for the various categories of assets:


Buildings and land improvements			5 to 40 years
Machinery and equipment			3 to 25 years
Trucks and automobiles			3 to 10 years
Furniture and fixtures			3 to 20 years
Computers and hardware			3 to 7 years

Leasehold improvements			Period of the lease or useful life, if shorter

The amount of depreciation expense was $161.5 million, $154.0 million and $148.2 million for the years ended December 31, 2011, 2010 and 2009, respectively. Expenditures for repairs and maintenance are expensed as incurred.

Pursuant to the terms of an industrial revenue bond, title to certain property, plant and equipment was transferred to a municipal development authority in 2009 in order to receive a property tax abatement. The title of these assets will revert back to PCA upon retirement or cancellation of the bond. The assets are included in the consolidated balance sheet under the caption "Property, plant and equipment, net" as all risks and rewards remain with the Company.

Goodwill and Intangible Assets

The Company has capitalized certain intangible assets, primarily customer lists and relationships, covenants not to compete and goodwill, based on their estimated fair value at the date of acquisition. Amortization is provided for customer lists and relationships on a straight-line basis over periods ranging from six to 40 years. Covenants not to compete are amortized on a straight-line basis over the terms of the respective agreements.

Goodwill, which amounted to $58.2 million and $38.9 million for the years ended December 31, 2011 and 2010, respectively, is not being amortized but is subject to an annual impairment test in accordance with Accounting Standards Codification ("ASC") 350, "Intangibles — Goodwill and Other." The Company performs the impairment test at year end or sooner if events or changes in circumstances indicate that the carrying amount may exceed fair value. Recoverability of goodwill is determined by comparing the fair value of the reporting unit with its carrying value, including goodwill. If the carrying amount of the reporting unit exceeds the fair value, the implied fair value of the reporting unit's goodwill is compared to the carrying amount of its goodwill to determine if a write-down to fair value is necessary. The Company concluded that no impairment of goodwill existed at the time of the annual impairment tests in 2011, 2010 and 2009.

Other Long-Term Assets

PCA has capitalized certain costs related to obtaining its financing. These costs are amortized to interest expense using the effective interest rate method over the terms of the senior credit facilities and senior notes, which range from five to ten years. Unamortized deferred financing costs were $2.6 million and $1.3 million as of December 31, 2011 and 2010, respectively.

PCA leases the cutting rights to approximately 88,000 acres of timberland and capitalizes the annual lease payments and reforestation costs associated with these leases. These costs are recorded as depletion when timber is harvested and used in PCA's business operations or sold to customers. Capitalized long-term lease costs were $26.2 million and $24.5 million as of December 31, 2011 and 2010, respectively. The amount of depletion expense was $0.04 million, $0.5 million and $1.2 million for the years ended December 31, 2011, 2010 and 2009, respectively.

PCA capitalizes certain costs related to the purchase and development of software which is used in its business operations. The costs attributable to these software systems are amortized over their estimated useful lives based on various factors such as the effects of obsolescence, technology and other economic factors. Net capitalized software costs were $1.9 million and $1.5 million for the years ended December 31, 2011 and 2010, respectively. Software amortization expense was $0.6 million, $0.6 million and $0.5 million for the years ended December 31, 2011, 2010 and 2009, respectively.

Impairment of Long-Lived Assets

Long-lived assets other than goodwill are reviewed for impairment in accordance with provisions of ASC 360, "Property, Plant and Equipment." In the event that facts and circumstances indicate that the carrying amount of any long-lived assets may be impaired, an evaluation of recoverability would be performed. If an evaluation is required, the estimated future undiscounted cash flows associated with the asset (or group of assets) would be compared to the asset's (or group of assets') carrying amount to determine if a write-down to fair value is required. The Company concluded that no impairment of long-lived assets existed in 2011, 2010 and 2009.

Pension and Postretirement Benefits

One of the principal assumptions used to calculate net periodic pension cost is the expected long-term rate of return on plan assets. The expected long-term rate of return on plan assets may result in recognized returns that are greater or less than the actual returns on those plan assets in any given year. Over time, however, the expected long-term rate of return on plan assets is designed to approximate the actual long term returns.

The discount rate assumptions used to calculate net periodic pension and postretirement cost reflect the rates available on high-quality, fixed-income debt instruments on December 31st of each year. The rate of compensation increase is another significant assumption used to calculate net periodic pension cost and is determined by the Company based upon annual reviews.

For postretirement health care plan accounting, the Company reviews external data and its own historical trends for health care costs to determine the health care cost trend rate assumption.

Environmental Matters

Environmental expenditures related to existing conditions resulting from past or current operations from which no current or future benefit is discernible are expensed as incurred. Environmental expenditures that extend the life of the related property or mitigate or prevent future environmental contamination are capitalized. Liabilities are recorded for environmental contingencies when such costs are probable and reasonably estimable. These liabilities are adjusted as further information develops or circumstances change.

Asset Retirement Obligations

The Company accounts for its retirement obligations related to its landfills under ASC 410, "Asset Retirement and Environmental Obligations," which requires legal obligations associated with the retirement of long-lived assets to be recognized at their fair value at the time that the obligations are incurred. Upon initial recognition of a liability, that cost is capitalized as part of the related long-lived asset and amortized to expense over the useful life of the asset.

Income Taxes

PCA utilizes the liability method of accounting for income taxes whereby it recognizes deferred tax assets and liabilities for the future tax consequences of temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements. Deferred tax assets will be reduced by a valuation allowance if, based upon management's estimates, it is more likely than not that a portion of the deferred tax assets will not be realized in a future period. The estimates utilized in the recognition of deferred tax assets are subject to revision in future periods based on new facts or circumstances.

PCA's practice is to recognize interest and penalties related to uncertain tax positions in income tax expense.

Fair Value of Financial Instruments

PCA measures the fair value of its financial instruments in accordance with ASC 820, "Fair Value Measurements and Disclosures." The guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. It is determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820 establishes the following hierarchy that prioritizes the inputs to valuation methodologies used to measure fair value:

Level 1 — Valuations based on quoted prices for identical assets and liabilities in active markets.

Level 2 — Valuations based on observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data.

Level 3 — Valuations based on unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

The Company measures the fair value of money market funds based on quoted prices in active markets for identical assets or liabilities. See Note 6 for information about PCA's pension plans' assets measured at fair value and Note 11 for information about PCA's assets and liabilities measured at fair value.

Planned Major Maintenance Activities

The Company accounts for its planned major maintenance activities in accordance with ASC 360, "Property, Plant, and Equipment," using the deferral method. All maintenance costs incurred during the year are expensed in the year in which the maintenance activity occurs.

Revenue Recognition

The Company recognizes revenue as title to the products is transferred to customers. Shipping and handling billings to a customer are included in net sales. Shipping and handling costs are included in cost of sales. In addition, the Company offers volume rebates to certain of its customers. The total cost of these programs is estimated and accrued as a reduction to net sales at the time of the respective sale.

Research and Development

Research and development costs are expensed as incurred. The amount charged to expense was $12.5 million, $10.9 million and $9.4 million for the years ended December 31, 2011, 2010 and 2009, respectively.

Interest Expense, Net

Interest expense, net, includes interest income of $0.02 million, $0.04 million and $0.1 million for the years ended December 31, 2011, 2010 and 2009, respectively, and amortization of the net gain on treasury lock settlements in July 2003 and March 2008 of $1.8 million for each of the years 2011, 2010 and 2009.

Trade Agreements

PCA regularly trades containerboard with other manufacturers primarily to reduce shipping costs. These agreements are entered into with other producers on an annual basis, pursuant to which both parties agree to ship an identical number of tons of containerboard to each other within the agreement period. These agreements lower transportation costs by allowing each party's containerboard mills to ship containerboard to the other party's closest corrugated products plant. PCA tracks each shipment to ensure that the other party's shipments to PCA match PCA's shipments to the other party during the agreement period. Such transfers are possible because containerboard is a commodity product with no distinguishing product characteristics. These transactions are accounted for at carrying value, and revenue is not recorded as the transactions do not represent the culmination of an earnings process. The transactions are recorded into inventory accounts, and no income is recorded until such inventory is converted to a finished product and sold to an end-use customer.

Segment Information

PCA is engaged in one line of business: the integrated manufacture and sale of packaging materials, boxes and containers for industrial and consumer markets. No single customer accounts for more than 10% of total net sales.

Derivative Instruments and Hedging Activities

The Company records its derivatives in accordance with ASC 815, "Derivatives and Hedging." The guidance requires the Company to recognize derivative instruments as either assets or liabilities in the balance sheet at fair value. The accounting for changes in the fair value of a derivative depends on the intended use and designation of the derivative instrument. For a derivative designated as a fair value hedge, the gain or loss on the derivative is recognized in earnings in the period of change in fair value together with the offsetting gain or loss on the hedged item. For a derivative instrument designated as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of accumulated other comprehensive income (loss) ("OCI") and is subsequently recognized in earnings when the hedged exposure affects earnings. The ineffective portion of the gain or loss is recognized in earnings.

Recent Accounting Pronouncements

In December 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2011-12, "Comprehensive Income (Topic 220) — Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05." This ASU effectively defers only those changes in Update 2011-05 as discussed below that relate to the presentation of reclassification adjustments out of accumulated other comprehensive income and gives the FASB additional time to redeliberate the presentation requirements for reclassification adjustments. The amendments in this ASU are effective for public entities for fiscal years, and interim periods within those years, beginning after December 15, 2011. The Company will comply with the provisions of ASU 2011-12 upon its adoption on January 1, 2012.

In September 2011, the FASB issued ASU 2011-09, "Compensation — Retirement Benefits — Multiemployer Plans (Subtopic 715-80) — Disclosures about an Employer's Participation in a Multiemployer Plan." The amendments in this update require that employers provide additional quantitative and qualitative disclosures which will provide users with more detailed information about an employer's involvement in multiemployer pension plans and multiemployer other postretirement benefits plans. The provisions in this update are effective for fiscal years ending after December 15, 2011, with early adoption permitted. The adoption of this guidance on December 31, 2011 did not have any impact on the Company's disclosures.

The FASB issued ASU 2011-08, "Intangibles — Goodwill and Other (Topic 350) — Testing Goodwill for Impairment," which simplifies how entities test goodwill for impairment. The amendments in this update provide an entity the option to make a qualitative evaluation about the likelihood of goodwill impairment to determine whether it should calculate the fair value of a reporting unit. ASU 2011-08 is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. Early adoption is permitted. The Company will comply with the provisions of ASU 2011-08 upon its adoption on January 1, 2012.

In June 2011, the FASB issued ASU 2011-05, "Comprehensive Income (Topic 220) — Presentation of Comprehensive Income." The amendments in this ASU require that all nonowner changes in stockholders' equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. The provisions in this update should be applied retrospectively and are effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. Early adoption is permitted. The Company will comply with the additional provisions of ASU 2011-05 upon its adoption on January 1, 2012.

In May 2011, the FASB issued ASU 2011-04, "Fair Value Measurement (Topic 820) — Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs." The amendments in this ASU clarify the application of existing fair value measurement and disclosure requirements, which will improve the comparability of fair value measurements presented and disclosed in financial statements prepared in accordance with U.S. GAAP and IFRSs. ASU 2011-04 is effective for interim and annual periods beginning after December 15, 2011. Early application is not permitted. The Company does not expect the adoption of this guidance to have any impact on its financial position, results of operations or cash flows.

In December 2010, the FASB issued ASU 2010-28, "Intangibles — Goodwill and Other (Topic 350) — When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts." This ASU modifies Step 1 of the goodwill impairment test for reporting units with zero or negative carrying amounts. For such reporting units, an entity is required to perform Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists. ASU 2010-28 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2010. The adoption of this guidance on January 1, 2011 did not have any impact on the Company's financial position, results of operations or cash flows.

In January 2010, the FASB issued ASU 2010-06, "Fair Value Measurements and Disclosures (Topic 820) — Improving Disclosures about Fair Value Measurements." This ASU requires some new disclosures and clarifies some existing disclosure requirements about fair value measurement as set forth in Accounting Standards Codification ("ASC") 820. ASU 2010-06 amends ASC 820 to now require: (1) a reporting entity should disclose separately the amounts of significant transfers in and out of Level 1 and Level 2 fair value measurements and describe the reasons for the transfers; and (2) in the reconciliation for fair value measurements using significant unobservable inputs, a reporting entity should present separately information about purchases, sales, issuances, and settlements. In addition, ASU 2010-06 clarifies the requirements of existing disclosures. ASU 2010-06 is effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements. Those disclosures are effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. As of January 1, 2011, the Company has adopted all disclosure provision of this guidance. See Note 11 for additional information.

Reclassifications

Certain immaterial reclassifications have been made to prior fiscal year balances to conform to the presentation of the current fiscal year.

Earnings Per Share

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Earnings Per Share

3.	EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted income per common share for the periods presented.


	Year Ended December 31,
	2011		2010		2009
	(In thousands, except per share data)
Numerator:
Net income	$	158,027	$	205,435	$	265,895
Denominator:
Basic common shares outstanding		99,281		101,678		101,577
Effect of dilutive securities:
Stock options		282		238		74
Unvested restricted stock		813		692		707

Diluted common shares outstanding		100,376		102,608		102,358

Basic income per common share	$	1.59	$	2.02	$	2.62
Diluted income per common share	$	1.57	$	2.00	$	2.60

Options to purchase 0.6 million shares and 1.8 million shares at December 31, 2010, and 2009, respectively, were not included in the computation of diluted common shares outstanding as their exercise price exceeded the average market price of the Company's common stock for the respective reporting period. All outstanding options to purchase shares at December 31, 2011 were included in the computation of diluted common shares outstanding.

Stock-Based Compensation

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation

4.	STOCK-BASED COMPENSATION

In October 1999, the Company adopted a long-term equity incentive plan, which allows for grants of stock options, stock appreciation rights, restricted stock and performance awards to directors, officers and employees of PCA, as well as others who engage in services for PCA. The Company has not granted any option awards since 2007. Restricted stock awards granted to employees vest at the end of a four-year period, and stock awards granted to directors vest immediately. The plan, which will terminate on October 19, 2014, provides for the issuance of up to 8,550,000 shares of common stock over the life of the plan. As of December 31, 2011, options and restricted stock for 7,659,255 shares have been granted, net of forfeitures. Forfeitures are added back to the pool of shares of common stock available to be granted at a future date.

Compensation expense for both stock options, which were fully vested at June 30, 2010, and restricted stock recognized in the consolidated statements of income for the years ended December 31, 2011, 2010 and 2009 was as follows:


	Year Ended December 31,
	2011			2010			2009
	(In thousands)
Stock options	$	—		$	226		$	720
Restricted stock		9,736			6,780			6,541

Impact on income before income taxes		9,736			7,006			7,261
Income tax benefit		(3,784	)		(2,721	)		(2,827	)

Impact on net income	$	5,952		$	4,285		$	4,434

The Company uses the Black-Scholes-Merton option-pricing model to estimate the fair value of each option grant as of the date of grant. Expected volatilities are based on historical volatility of the Company's common stock. The expected life of the option is estimated using historical data pertaining to option exercises and employee terminations. Separate groups of employees that have similar historical exercise behavior are considered separately for estimating the expected life. The risk-free interest rate is based on U.S. Treasury yields in effect at the time of grant. The fair value of restricted stock is determined based on the closing price of the Company's common stock on the grant date.

A summary of the Company's stock option activity and related information follows:


	Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
								(In thousands)
Outstanding at December 31, 2008		2,227,032		$	19.85
Exercised		(185,801	)		8.69
Forfeited		(67,930	)		19.11

Outstanding at December 31, 2009		1,973,301			20.92
Exercised		(394,420	)		19.01
Forfeited		(10,497	)		24.62

Outstanding at December 31, 2010		1,568,384			21.38
Exercised		(343,685	)		20.34

Outstanding and exercisable at December 31, 2011		1,224,699		$	21.64		1.5	$	4,485

The total intrinsic value of options exercised during the years ended December 31, 2011, 2010, and 2009 was $2.8 million, $2.4 million, and $1.7 million, respectively. As of December 31, 2011, there is no unrecognized compensation cost related to stock option awards granted under the Company's equity incentive plan as all outstanding awards have vested.

A summary of the Company's restricted stock activity follows:


	2011						2010						2009
	Shares			Fair Market Value at Date of Grant			Shares			Fair Market Value at Date of Grant			Shares			Fair Market Value at Date of Grant
	(Dollars in thousands)
Restricted stock at January 1		1,478,000		$	30,600			1,235,505		$	24,718			1,038,270		$	23,023
Granted		575,694			16,005			573,440			12,693			444,985			6,995
Vested		(229,979	)		(5,816	)		(318,350	)		(6,563	)		(237,370	)		(5,079	)
Cancellations		(5,970	)		(134	)		(12,595	)		(248	)		(10,380	)		(221	)

Restricted stock at December 31		1,817,745		$	40,655			1,478,000		$	30,600			1,235,505		$	24,718

As of December 31, 2011, there was $21.6 million of total unrecognized compensation costs related to the restricted stock awards. The Company expects to recognize the cost of these stock awards over a weighted-average period of 2.6 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

+ Details

Accrued Liabilities

12 Months Ended

Dec. 31, 2011

Accrued Liabilities [Abstract]

Accrued Liabilities

5.	ACCRUED LIABILITIES

The components of accrued liabilities are as follows:


	December 31,
	2011		2010
	(In thousands)
Derivative — treasury lock	$	48,829	$	—
Bonuses and incentives and related payroll taxes		31,480		32,345
Medical insurance and workers' compensation		18,685		16,242
Customer volume discounts and rebates		18,656		17,631
Vacation and holiday pay		16,576		16,012
Franchise, property, sales and use taxes		8,711		9,218
Current portion of pension and postretirement benefits		6,284		5,253
Payroll and payroll taxes		6,409		5,138
Other		7,629		7,388

Total	$	163,259	$	109,227

Employee Benefit Plans And Other Postretirement Benefits

12 Months Ended

Dec. 31, 2011

Employee Benefit Plans And Other Postretirement Benefits [Abstract]

Employee Benefit Plans And Other Postretirement Benefits

6.	EMPLOYEE BENEFIT PLANS AND OTHER POSTRETIREMENT BENEFITS

In connection with the acquisition from Pactiv, PCA and Pactiv entered into a human resources agreement which, among other items, granted PCA employees continued participation in the Pactiv pension plan for a period of up to five years following the closing of the acquisition for an agreed upon fee.

Effective January 1, 2003, PCA adopted a mirror-image pension plan for eligible hourly employees to succeed the Pactiv pension plan in which PCA hourly employees had participated though December 31, 2002. The PCA pension plan for hourly employees recognizes service earned under both the PCA plan and the prior Pactiv plan. Benefits earned under the PCA plan are reduced by retirement benefits earned under the Pactiv plan through December 31, 2002. All assets and liabilities associated with benefits earned through December 31, 2002 for hourly employees and retirees of PCA were retained by the Pactiv plan.

Effective May 1, 2004, PCA adopted a grandfathered pension plan for eligible salaried employees who had previously participated in the Pactiv pension plan. The benefit formula for the new PCA pension plan for salaried employees is comparable to that of the Pactiv plan except that the PCA plan uses career average base pay in the benefit formula in lieu of final average base pay. The PCA pension plan for salaried employees recognizes service earned under both the PCA plan and the prior Pactiv plan. Benefits earned under the PCA plan are reduced by retirement benefits earned under the Pactiv plan through April 30, 2004. All assets and liabilities associated with benefits earned through April 30, 2004 for salaried employees and retirees of PCA were retained by the Pactiv plan.

PCA maintains a supplemental executive retirement plan ("SERP"), which augments pension benefits for eligible executives earned under the PCA pension plan for salaried employees. Benefits are determined using the same formula as the PCA pension plan but in addition to counting career average base pay, the SERP also recognizes bonuses and any pay earned in excess of IRS qualified plan compensation limits. Benefits earned under the SERP are reduced by benefits paid from the PCA salaried pension plan and any prior qualified pension and SERP benefits earned under the Pactiv plan.

PCA previously maintained a separate SERP for its former CEO and current Executive Chairman which was paid out and terminated on March 15, 2009. The terminated plan was replaced by a lower cost deferred compensation benefit plan.

PCA provides certain medical benefits for retired salaried employees and certain medical and life insurance benefits for certain hourly employees. For salaried employees, the plan covers employees retiring from PCA on or after attaining age 58 who have had at least 10 years of full-time service with PCA after attaining age 48. For hourly employees, the postretirement medical coverage, where applicable, is available according to the eligibility provisions in effect at the employee's work location. Per the human resources agreement referred to above, Pactiv retained the liability relating to retiree medical and life benefits for PCA employees who had retired on or before April 12, 1999 or who were eligible to retire within two years of that date. On January 1, 2003, the Company adopted a new plan design for salaried employees incorporating annual dollar caps in determining the maximum amount of employer contributions made towards the total cost of postretirement medical coverage. Effective January 1, 2012 Pactiv curtailed the availability of retiree medical coverage to any of its salaried retirees, and their enrolled spouses, who were 65 or older. This affected approximately 50 PCA salaried retirees covered under Pactiv's retiree medical plan. PCA permitted these retirees and covered spouses to elect medical coverage under PCA's retiree medical plan effective January 1, 2012.

The following tables provide information related to the Company's pension and postretirement benefit plans.


	Pension Plans									Postretirement Plans
	2011			2010			2009			2011			2010			2009
	(In thousands)
Change in Benefit Obligation
Benefit obligation at beginning of period	$	246,985		$	203,292		$	178,455		$	23,215		$	20,080		$	17,300
Service cost		19,808			18,315			17,955			1,599			1,399			1,341
Interest cost		13,473			12,091			10,208			1,189			1,130			1,022
Plan amendments		1,827			837			7,168			—			—			—
Actuarial loss		35,399			15,153			701			755			1,931			987
Participant contributions		—			—			—			942			838			656
Benefits paid		(3,337	)		(2,703	)		(11,195	)		(1,763	)		(2,163	)		(1,226	)

Benefit obligation at plan year end	$	314,155		$	246,985		$	203,292		$	25,937		$	23,215		$	20,080

Accumulated benefit obligation portion of above	$	280,820		$	214,676		$	171,384

Change in Fair Value of Plan Assets
Plan assets at fair value at beginning of period	$	167,033		$	140,065		$	97,248		$	—		$	—		$	—
Actual return on plan assets		(732	)		14,457			18,590			—			—			—
Company contributions		22,158			15,214			35,422			821			1,325			570
Participant contributions		—			—			—			942			838			656
Benefits paid		(3,337	)		(2,703	)		(11,195	)		(1,763	)		(2,163	)		(1,226	)

Fair value of plan assets at plan year end	$	185,122		$	167,033		$	140,065		$	—		$	—		$	—


	Pension Plans						Postretirement Plans
	December 31, 2011			December 31, 2010			December 31, 2011			December 31, 2010
	(In thousands)
Development of Net Amount Recognized
Benefit obligation in excess of plan assets at December 31	$	(129,033	)	$	(79,952	)	$	(25,937	)	$	(23,215	)

Amounts Recognized in Statement of Financial Position
Current liabilities	$	(5,232	)	$	(4,107	)	$	(1,052	)	$	(1,146	)
Noncurrent liabilities		(123,801	)		(75,845	)		(24,885	)		(22,069	)

Accrued benefit recognized at December 31	$	(129,033	)	$	(79,952	)	$	(25,937	)	$	(23,215	)

Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax
Prior service cost	$	23,573		$	25,957		$	(481	)	$	(734	)
Actuarial loss		45,791			15,714			5,193			5,001

Total	$	69,364		$	41,671		$	4,712		$	4,267


	Pension Plans									Postretirement Plans
	2011			2010			2009			2011			2010			2009
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost for benefits earned during the year	$	19,808		$	18,315		$	17,955		$	1,599		$	1,399		$	1,341
Interest cost on accumulated benefit obligation		13,473			12,091			10,208			1,189			1,130			1,022
Expected return on plan assets		(13,544	)		(11,207	)		(8,573	)		—			—			—
Net amortization of unrecognized amounts
Prior service cost		5,782			5,685			4,903			(416	)		(416	)		(416	)
Actuarial loss		411			247			803			449			342			328
Other		—			—			(126	)		—			—			—

Net periodic benefit cost	$	25,930		$	25,131		$	25,170		$	2,821		$	2,455		$	2,275

For the year ended December 31, 2012, the Company expects to recognize in net periodic benefit cost $6.0 million ($3.7 million net of tax) and $(0.4) million ($0.3 million net of tax) of prior service cost for pension and postretirement plans, respectively, and $4.9 million ($3.0 million net of tax) and $0.5 million ($0.3 million net of tax) of actuarial loss for pension and postretirement plans, respectively, which is included in accumulated other comprehensive income (loss) at December 31, 2011.


	Pension Plans									Postretirement Plans
	2011			2010			2009			2011			2010			2009
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate		4.75	%		5.50	%		6.00	%		4.50	%		5.25	%		5.75	%
Rate of compensation increase		4.00	%		4.00	%		4.00	%		N/A			N/A			N/A
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for the Years Ended December 31
Discount rate		5.50	%		6.00	%		6.00	%		5.25	%		5.75	%		6.00	%
Expected return on plan assets		7.75	%		7.75	%		8.25	%		N/A			N/A			N/A
Rate of compensation increase		4.00	%		4.00	%		4.00	%		N/A			N/A			N/A

The expected return on pension plan assets reflects the expected long-term rates of return for the categories of investments currently held in the plan as well as anticipated returns for additional contributions made in the future. The expected long-term rate of return is adjusted when there are fundamental changes in expected returns on the plan investments.

The discount rate assumptions used to calculate the present value of pension and postretirement benefit obligations reflect the rates available on high-quality, fixed-income debt instruments on December 31^st. The rate of compensation increase is another significant assumption used for pension accounting and is determined by the Company based upon annual reviews.

In determining net pension and postretirement benefit costs, the Company elected to amortize prior service cost on a straight-line basis over the average remaining service period of employees expected to receive benefits under the plans. A 10% corridor is used to determine the amount of the unrecognized net gain or loss to be amortized. The excess, if any, of the unrecognized net gain or loss over 10% of the greater of the projected benefit obligation or the market-related value of plan assets is amortized over the average remaining service period until retirement for active participants and included in the net periodic benefit cost.

The Company assumed health care cost trend rates for its postretirement benefits plans were as follows:


	2011			2010			2009
Health care cost trend rate assumed for next year		8.00	%		7.50	%		7.50	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)		5.50	%		5.00	%		5.00	%
Year that the rate reaches the ultimate trend rate		2016			2016			2015

A one-percentage point change in assumed health care cost trend rates would have the following effects on the 2011 postretirement benefit obligation and the 2011 net post retirement benefit cost:


	1-Percentage Point Increase		1-Percentage Point Decrease
	(In thousands)
Effect on postretirement benefit obligation	$	662	$	(587	)
Effect on net postretirement benefit cost		65		(56	)

PCA has retained the services of a professional advisor to oversee pension investments and provide recommendations regarding investment strategy. PCA's overall strategy and related apportionments between equity and debt securities may change from time to time based on market conditions, external economic factors, and the funding status of the plans. Pension plans' assets were invested in the following classes of securities at December 31, 2011 and 2010:


	Percentage of Fair Value
	2011			2010
Equity securities		36	%		39	%
Debt securities		63	%		60	%
Other		1	%		1	%

The fair values of PCA's pension plans' assets at December 31, 2011 and 2010, measured on a recurring basis, by asset category are as follows:


	Fair Value Measurements at December 31, 2011
Asset Category	Total		Quoted Prices in Active Markets for identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In thousands)
Short-term investments	$	1,257	$	—	$	1,257	$	—
Equity securities:
U.S. large value		11,272		11,272
U.S. large growth		9,172		9,172
U.S. mid-cap value		1,914		1,914
U.S. mid-cap growth		3,684		3,684
U.S. small blend		3,784				3,784
Foreign large blend		27,164		27,164
Diversified emerging markets		5,306		5,306
Real estate		5,405		5,405
Debt securities:
Government bonds		24,372				24,372
Corporate bonds		91,792		36,929		54,863

Total	$	185,122	$	100,846	$	84,276	$	—


	Fair Value Measurements at December 31, 2010
Asset Category	Total		Quoted Prices in Active Markets for identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In thousands)
Short-term investments	$	1,320	$	—	$	1,320	$	—
Equity securities:
U.S. large value		10,594		10,594
U.S. large growth		8,519		8,519
U.S. mid-cap value		1,871		1,871
U.S. mid-cap growth		3,486		3,486
U.S. small blend		3,394				3,394
Foreign large blend		26,616		26,616
Diversified emerging markets		5,219		5,219
Real estate		5,095		5,095
Debt securities:
Government bonds		21,088				21,088
Corporate bonds		79,831		33,240		46,591

Total	$	167,033	$	94,640	$	72,393	$	—

The Company makes pension plan contributions that are sufficient to fund its actuarially determined costs, generally equal to the minimum amounts required by the Employee Retirement Income Security Act (ERISA). However, from time to time the Company may make discretionary contributions in excess of the required minimum amounts. PCA currently expects to make pension contributions of $32.6 million and record pension plan expense of $36.0 million in 2012.

The following are estimated benefit payments to be paid to current plan participants by year:


	Pension Plans		Postretirement Plans
	(In thousands)
2012	$	5,232	$	1,052
2013		6,655		1,139
2014		8,157		1,226
2015		9,813		1,380
2016		11,457		1,481
2017 — 2021		85,357		10,258

The Company has two defined contribution benefit plans that cover all full-time salaried employees and certain hourly employees at several of the Company's facilities. Employees can make voluntary contributions in accordance with the provisions of their respective plan. The Company made employer-matching contributions of $10.4 million, $9.6 million and $9.4 million during the years ended December 31, 2011, 2010 and 2009, respectively.

Effective January 1, 2011, PCA's Board of Directors adopted a resolution designating the portion of the defined contribution plan's investments held in the Company's stock, and any future employee or employer contribution invested in the Company's stock, as investments in an "Employee Stock Ownership Plan" ("ESOP"). The Company uses the ESOP to provide the Company's matching contribution in the form of the Company's stock to the plan participants (full-time salaried employees only). The Company expenses the employer-matching contributions and charges dividends on shares held by the ESOP to retained earnings. Any shares of Company stock held by the ESOP are included in basic shares for earnings-per-share computations. At December 31, 2011, the ESOP held 2.6 million shares of the Company's common stock.

Salaried employees who are not participants in the grandfathered pension plan (generally those hired on or after April 12, 1999) receive a service-related Company retirement contribution to their defined contribution plan account in addition to any employer matching contribution. This contribution increases with years of service and ranges from 3% to 5% of base pay. The Company expensed $3.9 million, $3.1 million and $2.8 million for this retirement contribution during the years ended December 31, 2011, 2010 and 2009, respectively.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph q
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 8
-Subparagraph m
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-2
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 30
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name FASB Staff Position (FSP)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS88
-Paragraph 63
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

+ Details

Goodwill And Other Intangible Assets

12 Months Ended

Dec. 31, 2011

Goodwill And Other Intangible Assets [Abstract]

Goodwill And Other Intangible Assets

7.	GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill

Changes in the carrying amount of goodwill for the period ended December 31, 2011 are as follows:


(In thousands)
Balance as of December 31, 2010 and 2009	$	38,854
Acquisitions		19,360

Balance at December 31, 2011	$	58,214

Other Intangible Assets

The components of other intangible assets are as follows:


	Weighted Average Remaining Life		As of December 31, 2011				As of December 31, 2010
	Weighted Average Remaining Life		Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Customer relationships		18.7 years	$	32,520	$	7,771	$	17,441	$	6,466
Other		2.6years		349		56		—		—

Total other intangible assets			$	32,869	$	7,827	$	17,441	$	6,466

The amount of amortization expense was $1.4 million, $0.8 million, and $0.9 million for the years ended December 31, 2011, 2010 and 2009, respectively. Estimated amortization of intangible assets over the next five years is expected to approximate $2.0 million (2012), $2.0 million (2013), $1.9 million (2014), $1.8 million (2015) and $1.8 million (2016).

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Debt

12 Months Ended

Dec. 31, 2011

Debt [Abstract]

Debt

DEBT

A summary of debt is set forth in the following table:


	December 31,
	2011		2010
	(In thousands)
Receivables credit facility, effective interest rate of 1.15% and 1.56% as of December 31, 2011 and 2010, respectively, due October 11, 2014	$	109,000	$	109,000
Senior credit facility — Term loan, effective interest rate of 2.08% as of December 31, 2011, due October 11, 2016		150,000		—
Senior notes, net of discount of $514 and $857 as of December 31, 2011 and 2010, respectively, interest at 5.75% payable semi-annually, due August 1, 2013		399,486		399,143
Senior notes, net of discount of $38 and $44 as of December 31, 2011 and 2010, respectively, interest at 6.50% payable semi-annually, due March 15, 2018		149,962		149,956

Total		808,448		658,099
Less current portion		15,000		109,000

Total long-term debt	$	793,448	$	549,099

On July 21, 2003, PCA offered to qualified institutional investors $150.0 million of 4.375% senior notes which matured in 2008 and $400.0 million of 5.75% senior notes due 2013. On March 25, 2008, PCA refinanced the five-year notes, issuing $150.0 million of 6.50% senior notes due March 15, 2018 through a registered public offering.

On October 11, 2011, the Company replaced its senior credit facility that was scheduled to terminate in April 2013 with a new senior credit facility that provides a $150.0 million term loan facility, which PCA fully borrowed, and a $250.0 million revolving credit facility, including a $50.0 million subfacility for letters of credit. Borrowings may be used for general corporate purposes and bear interest at LIBOR plus a margin that is determined based upon PCA's credit ratings. The new senior credit facility will terminate on October 11, 2016. The Company had no borrowings and $14.3 million of outstanding letters of credit under the revolving credit facility, resulting in $235.7 million in unused borrowing capacity as of December 31, 2011.

Also on October 11, 2011, PCA amended its existing receivables credit facility agreement which extended the termination date to October 11, 2014 and increased the borrowing availability from $150.0 million to $200.0 million. The Company had $91.0 million in additional borrowing capacity available under this facility as of December 31, 2011.

The instruments governing PCA's indebtedness contain financial and other covenants that limit the ability of PCA and its subsidiaries to enter into sale and leaseback transactions, incur liens, incur indebtedness at the subsidiary level, enter into certain transactions with affiliates, merge or consolidate with any other person or sell or otherwise dispose of all or substantially all of its assets. The senior credit facility also requires PCA to comply with certain financial covenants, including maintaining a minimum interest coverage ratio and a maximum leverage ratio. A failure to comply with these restrictions could lead to an event of default, which could result in an acceleration of any outstanding indebtedness and/or prohibit the Company from drawing on the senior credit facility. Such an acceleration may also constitute an event of default under the senior notes indenture and the receivables credit facility. At December 31, 2011, the Company was in compliance with these covenants.

Additional information regarding PCA's variable rate debt is shown below:


	Reference Interest Rate						Applicable Margin
	December 31,						December 31,
	2011			2010			2011			2010
Receivables credit facility		0.30	%		0.26	%		0.85	%		1.30	%
Senior credit facility		0.58	%		—			1.50	%		—

As of December 31, 2011, annual principal maturities for debt, excluding unamortized debt discount, are: $15.0 million (2012), $415.0 million (2013), $124.0 million (2014), $15.0 million (2015), $90.0 million (2016) and $150.0 million (2017 and after).

Interest payments in connection with the Company's debt obligations for the years ended December 31, 2011, 2010 and 2009, amounted to $35.2 million, $35.3 million, and $35.7 million, respectively.

PCA has an on-balance sheet securitization program for its trade accounts receivable that is accounted for as a secured borrowing under ASC 860, "Transfers and Servicing." To effectuate this program, the Company formed a wholly owned limited purpose subsidiary, Packaging Credit Company, LLC ("PCC"), which in turn formed a wholly owned, bankruptcy-remote, special-purpose subsidiary, Packaging Receivables Company, LLC ("PRC"), for the purpose of acquiring receivables from PCC. Both of these entities are included in the consolidated financial statements of the Company. Under this program, PCC purchases on an ongoing basis substantially all of the receivables of the Company and sells such receivables to PRC. PRC and lenders established a $200.0 million receivables-backed revolving credit facility ("Receivables Credit Facility") through which PRC obtains funds to purchase receivables from PCC. The receivables purchased by PRC are solely the property of PRC. In the event of liquidation of PRC, the creditors of PRC would be entitled to satisfy their claims from PRC's assets prior to any distribution to PCC or the Company. Credit available under the receivables credit facility is on a borrowing-base formula. As a result, the full amount of the facility may not be available at all times. At December 31, 2011, $109.0 million was outstanding and included in "Long — term debt" on the consolidated balance sheet. Substantially all accounts receivable at December 31, 2011 have been sold to PRC and are included in "Accounts receivable, net of allowance for doubtful accounts and customer deductions" on the consolidated balance sheet. The highest outstanding principal balance under the receivables credit facility during 2011 was $109.0 million.

A summary of the Company's drawings under revolving credit facilities, including the impact of $14.3 million of outstanding letters of credit, as of December 31, 2011 follows:


	Commitments		Utilized		Available
	(In thousands)
Receivables credit facility	$	200,000	$	109,000	$	91,000
Senior revolving credit facility		250,000		14,312		235,688

	$	450,000	$	123,312	$	326,688

PCA is required to pay commitment fees on the unused portions of the credit facilities. The Company's outstanding letters of credit at December 31, 2011 are primarily for workers' compensation.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Derivative Instruments And Hedging Activities

12 Months Ended

Dec. 31, 2011

Derivative Instruments And Hedging Activities [Abstract]

Derivative Instruments And Hedging Activities

9.	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

Hedging Strategy

PCA is exposed to certain risks relating to its ongoing operations. When appropriate, the Company uses derivatives as a risk management tool to mitigate the potential impact of certain market risks. The primary risks managed by using derivative financial instruments are interest rate and foreign currency exchange rate risks. PCA does not enter into derivative financial instruments for trading or speculative purposes.

Interest Rate Risk

The Company has historically used treasury lock derivative instruments to manage interest costs and the risk associated with changing interest rates. On June 12, 2003 and January 17, 2008, in connection with contemplated issuances of ten-year debt securities, PCA entered into interest rate protection agreements with counterparties to protect against increases in the ten-year U.S. Treasury Note rate. These treasury rates served as references in determining the interest rates applicable to the debt securities the Company issued in July 2003 and March 2008, respectively. As a result of changes in the interest rates on those treasury securities between the time PCA entered into the agreements and the time PCA priced and issued the debt securities, the Company: (1) received a payment of $22.8 million from the counterparty upon settlement of the 2003 interest rate protection agreement on July 21, 2003; and (2) made a payment of $4.4 million to the counterparty upon settlement of the 2008 interest rate protection agreement on March 25, 2008. The Company recorded the settlements in accumulated other comprehensive income (loss), which are amortized over the terms of the respective notes.

On May 25, 2010, in connection with a contemplated issuance of ten-year debt securities to eventually refinance PCA's currently outstanding $400.0 million of senior notes that mature in 2013, PCA entered into interest rate protection agreements with counterparties to protect against increases in the ten-year U.S. Treasury Note rate. The treasury rate will serve as a reference in determining the interest rate applicable to the new debt securities the Company expects to issue in the future. The interest rate protection agreements were properly documented and designated as cash flow hedges at inception. On February 4, 2011, PCA settled the treasury locks and received a payment of $9.9 million. The settlement was recorded in accumulated other comprehensive income (loss) and will be amortized over the terms of the respective notes once issued.

On August 1, 2011, PCA entered into an interest rate protection agreement with a counterparty to protect against increases in the ten-year U.S. Treasury Note rate. The treasury rate will serve as a reference in determining the interest rate applicable to the new debt securities the Company expects to issue in the future to refinance PCA's currently outstanding $400.0 million of senior notes that mature in 2013. At December 31, 2011, the Company had a notional value of $400.0 million in an interest rate protection agreement outstanding that is expected to settle by the end of 2012.

Foreign Currency Exchange Rate Risk

In connection with the energy optimization projects at its Valdosta, Georgia mill and Counce, Tennessee mill, the Company entered into foreign currency forward contracts in 2009 and 2010 to hedge its exposure to forecasted purchases of machinery and equipment denominated in foreign currencies. The foreign currency forward contracts were properly documented and designated as cash flow hedges at inception. At December 31, 2011, all contracts have been settled for a loss of $0.7 million. The loss was recorded in accumulated other comprehensive income (loss) and will be amortized over the lives of the respective machinery and equipment beginning in the fourth quarter of 2011. At December 31, 2011, the Company did not have any foreign currency forward contracts outstanding.

Counterparty Credit Risk

The Company is exposed to credit risk in the event of non-performance by counterparties to these derivative financial instruments. The amount of counterparty credit exposure is the unrealized gains, if any, on such derivative contracts. To minimize credit risk, the Company only enters into these types of transactions with investment grade counterparties. On a quarterly basis, the Company evaluates each hedge's net position relative to the counterparty's ability to cover its position. Although no assurances can be given, the Company does not expect any of the counterparties to these derivative financial instruments to fail to meet its obligations.

Derivative Instruments

The fair value of the Company's treasury lock at December 31, 2011 was $48.8 million, which is included in "Accrued liabilities" on the Company's consolidated balance sheet at December 31, 2011.

The impact of derivative instruments on the consolidated statements of income and OCI is as follows:


	Amount of Net Gain (Loss) Recognized in OCI (Effective Portion) December 31,
	2011			2010
	(In thousands)
Treasury locks, net of tax	$	(23,289	)	$	2,164
Foreign currency exchange contracts, net of tax		(413	)		(607	)

Total	$	(23,702	)	$	1,557


	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Year Ended December 31,
Location	2011			2010		2009
Interest expense, net	$	1,846		$	1,846	$	1,846
Cost of sales		(7	)		—		—

The net amount of settlement gains or losses on derivative instruments included in accumulated OCI to be realized during the next 12 months is a net gain of $1.8 million ($1.2 million after tax) at December 31, 2011. Mark to market gains and losses on derivative instruments included in accumulated OCI will be reclassified into earnings in the same periods during which the hedged transactions affect earnings. There were no ineffective portions of these contracts during the period.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Financial Instruments

12 Months Ended

Dec. 31, 2011

Financial Instruments [Abstract]

Financial Instruments

10.

FINANCIAL INSTRUMENTS

The carrying and estimated fair values of PCA's financial instruments at December 31, 2011 and 2010 were as follows:


	2011						2010
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(In thousands)
Cash and cash equivalents	$	156,313		$	156,313		$	196,556		$	196,556
Long-term debt —
5.75% senior notes		(399,486	)		(423,324	)		(399,143	)		(430,464	)
6.50% senior notes		(149,962	)		(174,576	)		(149,956	)		(158,800	)
Term loan		(150,000	)		(150,000	)		—			—
Receivables credit facility		(109,000	)		(109,000	)		(109,000	)		(109,000	)
Capital lease obligation		(21,832	)		(21,832	)		(22,502	)		(22,502	)

The fair value of cash and cash equivalents approximates its carrying amounts due to the short-term nature of these financial instruments.

The fair value of the term loan and the receivables credit facility approximates its carrying amount due to the variable interest-rate feature of the instruments. The fair values of the senior notes are based on quoted market prices. The fair value of the capital lease obligation was estimated to not be materially different from the carrying amount.

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15
-Subparagraph b-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a, c(1), c(2), c(3), d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph c(2), d, e, f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 19
-Subparagraph a, b, c(1), d(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13467-108611

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610

+ Details

Fair Value Measurements

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Fair Value Measurements

11.

FAIR VALUE MEASUREMENTS

The following presents information about PCA's assets and liabilities measured at fair value and the valuation techniques used to determine those fair values. The inputs used in the determination of fair values are categorized according to the fair value hierarchy as being Level 1, Level 2 or Level 3 in accordance with ASC 820, "Fair Value Measurements and Disclosures." The valuation techniques are as follows:

(a) Market approach — prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities

(b) Cost approach — amount that would be required to replace the service capacity of an asset (replacement cost)

(c) Income approach — techniques to convert future amounts to a single present amount based on market expectations (including present value techniques, option-pricing and excess earnings models)

Assets and liabilities measured at fair value on a recurring basis are as follows:


	As of December 31, 2011
					Measurement Approach					As of December 31, 2010
	Carrying Value		Fair Value		Level		Valuation Technique			Carrying Value		Fair Value
	(In thousands)
Current Assets
Money market funds	$	155,814	$	155,814		1		(a	)	$	196,058	$	196,058
Foreign currency exchange contracts		—		—		2		(a	)		12		12
Long-Term Assets
Treasury locks		—		—		2		(a	)		872		872
Accrued Liabilities
Treasury locks		48,829		48,829		2		(a	)		—		—

The money market funds PCA invests in include funds comprised of U.S. Treasury obligations or backed by U.S. Treasury obligations. The Company measures the fair value of money market funds based on quoted prices in active markets for identical assets.

The Company calculates the fair value of its treasury locks and foreign currency forward contracts using quoted treasury rates and currency spot rates, respectively, plus or minus forward points to calculate forward rates.

There were no changes in the Company's valuation techniques used to measure fair values on a recurring basis as a result of adopting ASC 820. PCA had no assets or liabilities that were measured on a nonrecurring basis.

- Definition

Tabular disclosure of the fair value measurement of assets and liabilities which includes [financial] instruments measured at fair value that are classified in stockholders' equity. Such assets and liabilities may be measured on a recurring or nonrecurring basis. The disclosures which may be required or desired include: (1) for assets and liabilities measured on a recurring basis, disclosure may include: (a) the fair value measurements at the reporting date; (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3); (c) for fair value measurements using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (i) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (ii) purchases, sales, issuances, and settlements (net); (iii) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs); (d) the amount of the total gains or losses for the period in subparagraph (c) (i) above included in earnings (or changes in net assets) that are attributable to the change in unrealized gains or losses relating to those assets and liabilities still held at the reporting date and a description of where those unrealized gains or losses are reported in the statement of income (or activities); (e) the valuation technique(s) used to measure fair value and a discussion of changes in valuation techniques, if any, during the period and (2) for assets and liabilities that are measured at fair value on a nonrecurring basis (for example, impaired assets) disclosure may include, in addition to (a) above: (a) the reasons for the fair value measurements recorded; (b) the same as (b) above; (c) for fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs; and (d) the valuation technique(s) used to measure fair value and a discussion of changes, if any, in the valuation technique(s) used to measure similar assets and/or liabilities in prior periods. Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

+ References

+ Details

Stock Repurchase Program

12 Months Ended

Dec. 31, 2011

Stock Repurchase Program [Abstract]

Stock Repurchase Program

12.

STOCK REPURCHASE PROGRAM

On October 17, 2007, PCA announced that its Board of Directors had authorized a $150.0 million common stock repurchase program, which it completed in the second quarter of 2011. The Company repurchased 863,466 shares of common stock at an average of $27.94 per share under this authorization in 2011. All repurchased shares were retired prior to June 30, 2011.

On February 22, 2011, PCA announced that its Board of Directors had authorized the repurchase of an additional $100.0 million of the Company's outstanding common stock. Through December 31, 2011, the Company repurchased 3,960,555 shares of common stock for $99.0 million, or an average of $24.99 per share, under this authorization. All but 2,355 repurchased shares were retired prior to December 31, 2011. As of December 31, 2011, $1.0 million of the $100.0 million authorization remained available for repurchase of the Company's common stock.

On December 14, 2011, the Company announced that its Board of Directors had authorized the repurchase of an additional $150.0 million of the Company's outstanding common stock. The full amount of the authorization remained available for repurchase of PCA's common stock at December 31, 2011.

Commitments And Contingencies

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Commitments And Contingencies

13.

COMMITMENTS AND CONTINGENCIES

Capital Commitments

The Company had authorized capital commitments of approximately $40.4 million and $143.3 million as of December 31, 2011 and 2010, respectively, in connection with the expansion and replacement of existing facilities and equipment. Included in authorized capital commitments is $109.2 million at December 31, 2010 for the major energy optimization projects at its Counce and Valdosta mills.

Lease Obligations

PCA leases space for certain of its facilities, cutting rights to approximately 88,000 acres of timberland, and equipment, primarily vehicles and rolling stock. Lease terms range from one to 14 years and may contain renewal options or escalation clauses. Some leases may require the Company to pay executory costs, which may include property taxes, maintenance and insurance. The minimum lease payments under non-cancelable operating leases with lease terms in excess of one year are as follows:


	(In thousands)
2012	$	32,103
2013		28,384
2014		20,465
2015		13,049
2016		8,676
Thereafter		45,413

Total	$	148,090

Total lease expense, including base rent on all leases and executory costs, such as insurance, taxes, and maintenance, for the years ended December 31, 2011, 2010 and 2009 was $46.1 million, $42.0 million and $41.3 million, respectively. These costs are included in cost of goods sold and selling and administrative expenses.

PCA was obligated under capital leases covering buildings and machinery and equipment in the amount of $21.8 million and $22.5 million at December 31, 2011 and 2010, respectively. Assets held under capital lease obligations are included in property, plant and equipment as follows:


	December 31,
	2011			2010
	(In thousands)
Buildings	$	250		$	250
Machinery and equipment		23,602			23,602

Total		23,852			23,852
Less accumulated amortization		(5,028	)		(3,481	)

Total	$	18,824		$	20,371

Amortization of assets under capital lease obligations is included in depreciation expense.

The future minimum payments under capitalized leases at December 31, 2011 are as follows:


	(In thousands)
2012	$	2,202
2013		2,202
2014		2,202
2015		2,202
2016		2,202
Thereafter		25,872

Total minimum capital lease payments		36,882
Less amounts representing interest		15,050

Present value of net minimum capital lease payments		21,832
Less current maturities of capital lease obligations		718

Total long-term capital lease obligations	$	21,114

Interest paid as part of the capital lease obligations was $1.5 million, $1.6 million, and $1.6 million during the years ended December 31, 2011, 2010 and 2009, respectively.

Purchase Commitments

The Company has entered into various purchase agreements for minimum amounts of pulpwood processing and energy over periods ranging from one to twenty years at fixed prices. Total purchase commitments are as follows:


	(In thousands)
2012	$	6,099
2013		4,903
2014		1,486
2015		1,486
2016		1,486
Thereafter		18,387

Total	$	33,847

The Company purchased $28.5 million, $32.8 million, and $37.3 million during the years ended December 31, 2011, 2010 and 2009, respectively, under these purchase agreements.

Litigation

During September and October 2010, PCA and eight other U.S. and Canadian containerboard producers were named as defendants in five purported class action lawsuits filed in the United States District Court for the Northern District of Illinois, alleging violations of the Sherman Act. The lawsuits have been consolidated in a single complaint under the caption Kleen Products LLC v Packaging Corp. of America et al. The consolidated complaint alleges that the defendants conspired to limit the supply of containerboard, and that the purpose and effect of the alleged conspiracy was to artificially increase prices of containerboard products during the period of August 2005 to the time of filing of the complaints. The complaint was filed as a purported class action suit on behalf of all purchasers of containerboard products during such period. The complaint seeks treble damages and costs, including attorney's fees. The defendants' motions to dismiss the complaint were denied by the court in April 2011. PCA believes the allegations are without merit and will defend this lawsuit vigorously. However, as the lawsuit is in the early stages of discovery, PCA is unable to predict the ultimate outcome or estimate a range of reasonably possible losses.

PCA is a party to various other legal actions arising in the ordinary course of business. These legal actions cover a broad variety of claims spanning our entire business. As of the date of this filing, the Company believes it is not reasonably possible that the resolution of these legal actions will, individually or in the aggregate, have a material adverse effect on its financial position, results of operations, or cash flows.

Environmental Liabilities

The potential costs for various environmental matters are uncertain due to such factors as the unknown magnitude of possible cleanup costs, the complexity and evolving nature of governmental laws and regulations and their interpretations, and the timing, varying costs and effectiveness of alternative cleanup technologies. From 1994 through 2011, remediation costs at the Company's mills and corrugated plants totaled approximately $3.2 million. As of December 31, 2011, the Company maintained an environmental reserve of $10.5 million relating to on-site landfills (see Note 14) and surface impoundments as well as ongoing and anticipated remedial projects. Liabilities recorded for environmental contingencies are estimates of the probable costs based upon available information and assumptions. Because of these uncertainties, PCA's estimates may change. As of the date of this filing, the Company believes that it is not reasonably possible that future environmental expenditures for remediation costs and asset retirement obligations above the $10.5 million accrued as of December 31, 2011, will have a material impact on its financial condition, results of operations, or cash flows.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Asset Retirement Obligations

12 Months Ended

Dec. 31, 2011

Asset Retirement Obligations [Abstract]

Asset Retirement Obligations

14.

ASSET RETIREMENT OBLIGATIONS

Asset retirement obligations consist primarily of landfill capping and closure and post-closure costs. PCA is legally required to perform capping and closure and post-closure care on the landfills at each of the Company's mills. In accordance with ASC 410, "Asset Retirement and Environmental Obligations," PCA recognizes the fair value of these liabilities as an asset retirement obligation for each landfill and capitalizes that cost as part of the cost basis of the related asset. The liability is accreted to its estimated value of the asset retirement obligation over time, and the related assets are depreciated on a straight-line basis over their useful lives. Upon settlement of the liability, PCA will recognize a gain or loss for any difference between the settlement amount and the recorded liability.

The following table describes changes to PCA's asset retirement obligation liability:


	2011		2010
	(In thousands)
Asset retirement obligation, January 1	$	4,884	$	4,521
Accretion expense		211		363
Payments		—		—

Asset retirement obligation, December 31	$	5,095	$	4,884

Income Taxes

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes

15.

INCOME TAXES

Following is an analysis of the components of the consolidated income tax provision:


	2011			2010			2009
	(In thousands)
Current —
U.S.	$	41,452		$	44,595		$	52,704
State and local		16,678			23,653			12,191

Total current provision for taxes		58,130			68,248			64,895

Deferred —
U.S.		29,895			(117,945	)		(11,745	)
State and local		(2,548	)		(2,634	)		(2,074	)

Total deferred provision for taxes		27,347			(120,579	)		(13,819	)

Total provision (benefit) for taxes	$	85,477		$	(52,331	)	$	51,076

The effective tax rate varies from the U.S. Federal statutory tax rate principally due to the following:


	2011			2010			2009
	(In thousands)
Provision computed at U.S. Federal statutory rate of 35%	$	85,226		$	53,586		$	110,939
Alternative fuel mixture and cellulosic biofuel producer credits		—			(104,785	)		(61,673	)
State and local taxes, net of federal benefit		7,504			7,694			4,566
Domestic manufacturers deduction		(7,670	)		(7,540	)		(2,956	)
Other		417			(1,286	)		200

Total	$	85,477		$	(52,331	)	$	51,076

The $104.8 million benefit in 2010 includes the reallocation of gallons from the alternative fuel mixture credit to the cellulosic biofuel producer credit claimed in the 2009 federal tax return, and includes a reserve for uncertain tax positions of $102.0 million. For further discussion regarding the alternative fuel mixture and cellulosic biofuel producer credits recorded during 2010 and 2009, see Note 16.

Deferred income tax assets and liabilities at December 31 are summarized as follows:


	December 31,
	2011			2010
	(In thousands)
Deferred tax assets:
Accrued liabilities	$	5,287		$	6,538
Employee benefits and compensation		15,100			15,794
Inventories		6,809			4,758
Stock options and restricted stock		8,596			7,485
Pension and postretirement benefits		60,455			41,930
Derivatives		15,072			—
Cellulosic biofuel tax credit carryforward		167,452			200,334

Total deferred tax assets	$	278,771		$	276,839

Deferred tax liabilities:
Property, plant and equipment	$	(216,109	)	$	(225,620	)
Goodwill and intangible assets		(10,676	)		(8,174	)
Investment in joint venture		(1,121	)		(1,049	)
Derivatives		—			(954	)

Total deferred tax liabilities	$	(227,906	)	$	(235,797	)

Net deferred tax assets	$	50,865		$	41,042

The net deferred tax assets (liabilities) at December 31 are classified in the balance sheet as follows:


	December 31,
	2011			2010
	(In thousands)
Current deferred tax assets	$	62,789		$	50,232
Non-current deferred tax liabilities		(11,924	)		(9,190	)

Net deferred tax assets	$	50,865		$	41,042

Cash payments for income taxes were $52.7 million, $19.1 million and $22.3 million for the years ended December 31, 2011, 2010 and 2009, respectively.

As of December 31, 2011, the Company had federal income tax credit carryforwards included in deferred taxes of $167.5 million which can be used to offset federal taxes payable through December 31, 2015. The $167.5 million recognizes the full benefit of federal tax credit carryforwards as claimed on PCA's federal tax return for the cellulosic biofuel credits before an adjustment of $102.0 million for uncertain tax positions under ASC 740. The deferred tax asset from the cellulosic biofuel producer credit carryforwards of $167.5 million is described in more detail in Notes 16 and 20.

The following table summarizes the changes related to PCA's gross uncertain tax positions excluding interest:


	2011			2010
	(In thousands)
Balance as of January 1	$	(112,311	)	$	(9,041	)
Increases related to prior years' tax positions		(56	)		(104,721	)
Increases related to current year tax positions		(624	)		(692	)
Settlements with taxing authorities		—			424
Expiration of the statute of limitations		1,978			1,719

Balance at December 31	$	(111,013	)	$	(112,311	)

During the third quarter of 2011, the statue of limitations for the federal tax year of 2007 expired. During the third and fourth quarters of 2011, various state statutes of limitations expired. As a result of these events, the reserve for uncertain tax positions was decreased by $2.0 million gross or $1.3 million net of the federal benefit for state taxes during the third and fourth quarters of 2011. At December 31, 2011, PCA had recorded a $111.0 million reserve for uncertain tax positions excluding interest. Of the total, $106.8 million (net of the federal benefit for state taxes) would impact the effective tax rate if recognized. The increase in reserve in 2010 is attributable to alternative energy tax credits as described in Note 16.

During the years ended December 31, 2011 and 2010, PCA recorded $0.2 million gross ($0.16 million net) and $0.2 million gross ($0.09 million net), respectively, in its statement of income, increasing the accrual for interest to $2.2 million gross ($1.4 million net) and $2.0 million gross ($1.2 million, net) at December 31, 2011 and 2010, respectively. No accrual for penalties was made.

PCA and its subsidiaries are subject to U.S. federal income taxes, as well as income taxes of multiple state and city jurisdictions. A federal examination of the tax years 2002 and 2004 has been concluded. The tax years 2008 — 2011 remain open to federal examination. The tax years 2002 — 2011 remain open to state examinations. During March of 2011, the Internal Revenue Service (IRS) started an audit of PCA's 2008 and 2009 tax years, which includes the cellulosic biofuel producer tax credits claimed in the 2009 federal income tax return. Pending the timing and outcome of the IRS audit, which is not determinable at this time, PCA expects the reserve for uncertain tax positions to change significantly. PCA estimates the change in uncertain tax positions to be between $0 and $104.7 million due to potential changes upon IRS examination.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Alternative Energy Tax Credits

12 Months Ended

Dec. 31, 2011

Alternative Energy Tax Credits [Abstract]

Alternative Energy Tax Credits

16.

ALTERNATIVE ENERGY TAX CREDITS

The Company generated black liquor as a by-product of its pulp manufacturing process and used it in a mixture with diesel fuel during 2009 to produce energy at its Counce, Tennessee, Valdosta, Georgia, and Tomahawk, Wisconsin mills. Through December 31, 2009, the U.S. Internal Revenue Code provided a $0.50 per gallon refundable tax credit for taxpayers who used alternative fuels in their trade or business. As a registered alternative fuel mixer, the Company believes the use of black liquor as an alternative fuel through December 31, 2009 qualified for this credit. After December 31, 2009, the alternative fuel mixture credit for a mixture of black liquor and diesel used is no longer available. During the first quarter of 2010, the IRS released a memorandum which provided clarification about the calculation of the alternative fuel mixture credit for black liquor. As a result, during the first quarter of 2010 the Company released the reserve of $9.2 million that was established in 2009 due to the ambiguity in the calculation of the credit. This reserve release resulted in additional income of $9.2 million, which was recorded in Alternative Fuel Mixture Tax Credits on the income statement in the first quarter of 2010.

The total alternative fuel mixture credits earned by PCA in 2008 and 2009 were $185.4 million, which was recorded as income with a corresponding receivable on its balance sheet during 2009 when the Company received their registration as a producer of alternative fuels. As federal taxes became due, PCA applied these credits against the taxes due. The laws governing the taxability of the alternative fuel mixture tax credit are not completely defined. The IRS has not issued definitive guidance regarding such taxability. PCA believes that the manner in which the credit was claimed will not subject the Company to federal or state income taxes on such benefits. If it is determined that any of the credits are subject to taxation, PCA will be required to pay those taxes and take a corresponding charge to its income.

In an IRS memorandum released during the second quarter of 2010, the IRS concluded that black liquor also qualifies for the taxable cellulosic biofuel producer credit of $1.01 per gallon of biofuel produced in 2009. In a subsequent memorandum, the IRS concluded that a black liquor producer may claim the alternative fuel mixture credit and the cellulosic biofuel producer credit in the same taxable year for different volumes of black liquor (the same gallon of fuel cannot receive both credits but can be claimed as either alternative fuel mixture credit or the cellulosic biofuel producer credit). PCA received the required cellulosic biofuel producer registration code in September 2010.

Based upon both IRS memoranda and guidance regarding the cellulosic biofuel producer credit, during the quarter ended September 30, 2010, the Company analyzed the additional potential benefits from claiming the cellulosic biofuel producer credit for 2009 instead of the alternative fuel mixture credit, or claiming a combination of the two credits for 2009. For the gallons of alternative fuels produced in 2009, PCA claimed about two-thirds of the gallons as cellulosic biofuel producer credits and about one-third of the gallons as alternative fuel mixture credits. As a result, during the quarter ended September 30, 2010, the Company recorded a charge of $(111.9) million in Alternative Fuel Mixture Tax Credits due to the reversal of a portion of the income previously recorded from alternative fuel mixture credits and a $145.8 million benefit in the (Provision) Benefit for Income Taxes to reflect the reallocation of gallons to the cellulosic biofuel producer credit. The net impact of the reallocation of the gallons between the two credits resulted in additional net income impact of $33.4 million in the third quarter of 2010. Additional expenses of $0.8 million ($0.5 million after tax) related to the cellulosic biofuel producer credit were also recorded.

During the quarter ended December 31, 2010, the Company determined that its proprietary biofuel process at the Filer City, Michigan mill would likely qualify for the 2009 cellulosic biofuel producer credit. The Company amended the 2009 federal return in December 2010 to claim these gallons, resulting in $107.0 million of cellulosic biofuel producer credits. Due to the unique and proprietary nature of the Filer City mill process, IRS guidelines do not specifically address the process and uncertainty exists. As a result, the Company increased the reserve for uncertain tax positions under ASC 740, "Income Taxes," by $102.0 million, which resulted in a fourth quarter net benefit of $5.0 million. Similar to the quarter ended September 30, 2010, the Company analyzed the appropriate combination of the cellulosic biofuel producer credit and the alternative fuel mixture credit. As a result, the Company recorded income of $16.4 million in Alternative Fuel Mixture Tax Credits, representing gallons reallocated to the alternative fuel credits per the amended 2009 federal return.

The cellulosic biofuel producer credit is a taxable credit. However, the laws governing the taxability of the alternative fuel mixture credit are not completely defined. The IRS has not issued definitive guidance regarding such taxability. PCA believes that the manner in which the credit was claimed will not subject the Company to federal or state income taxes on such benefits. If it is determined that any of the alternative fuel mixture credits are subject to taxation, PCA will be required to pay those taxes and take a corresponding charge to its income. During the first quarter of 2011, the Company received notification that the IRS will begin its review of the cellulosic biofuel producer tax credits claimed in the 2009 federal income tax return, and such review is under way.

The amount of credits that the Company can apply against future federal taxes owed will be dependent upon the timing and amount of PCA's future taxable income. As of December 31, 2011, including the reserve for uncertain tax positions, PCA had as much as $167.5 million of tax credits to be used to offset future tax payments. The cellulosic biofuel producer credit carryforward must be utilized to offset federal taxes owed by December 31, 2015, at which time the credit carryforward expires. A valuation allowance was not recorded against the deferred tax asset for this credit carryforward since the Company believes the credit can be fully utilized before expiration. If it is determined that any of the credit carryforward will become subject to expiration, PCA will reduce the deferred tax asset and record a corresponding charge to income.

See Note 20 for a subsequent event which occurred on February 3, 2012, in which PCA amended its 2009 tax return to reflect a change in claimed gallons between the alternative fuel mixture credits and cellulosic biofuel producer credits.

Related Party Transactions

12 Months Ended

Dec. 31, 2011

Related Party Transactions

17.

RELATED PARTY TRANSACTIONS

At December 31, 2011 and 2010, PCA owned approximately 29% of Southern Timber Venture, LLC ("STV") and had not guaranteed the debt of STV and has no future funding requirements. There is no carrying value of the Company's investment in STV under the equity method at December 31, 2011 and 2010. PCA did not receive any dividends from STV in 2011, 2010 or 2009.

PCA purchased pulpwood directly from STV for its Valdosta mill until November 2010, when STV sold its timberlands to another entity. PCA purchased $2.7 million and $3.4 million of pulpwood for its Valdosta, Georgia mill from STV during the years ended December 31, 2010 and 2009, respectively.

Unaudited Financial information for STV is as follows:


	Year Ended December 31,
	2011			2010			2009
	(In thousands)
Net sales	$	1,719		$	4,548		$	5,172
Gross profit (loss)		(16,389	)		(1,219	)		(450	)
Gain from sale of timberlands		—			13,299			—
Net income (loss)		(22,387	)		5,784			(5,912	)

- Definition

The entire disclosure for related party transactions, including the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph k

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 3A
-Section 04
-Paragraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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-Paragraph 1
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

+ Details

Acquisitions

12 Months Ended

Dec. 31, 2011

Acquisitions [Abstract]

Acquisitions

18.

ACQUISITIONS

On July 2, 2009, the Company acquired a specialty sheet business located in Chicago, Illinois for approximately $3.1 million, net of cash acquired. The purchase price was allocated to the assets acquired and liabilities assumed, resulting in $1.7 million of goodwill which is deductible for income tax purposes. Sales and total assets of the acquisition were not material to the Company's overall sales and assets prior to the acquisition. Operating results of the plant subsequent to the date of acquisition are included in the Company's operating results.

On April 14, 2011, the Company acquired Field Packaging Group, a corrugated products manufacturer located in Chicago, Illinois, for $26.9 million. Sales and total assets of the acquisition were not material to the Company's overall sales and total assets prior to the acquisition. Operating results of the acquisition subsequent to April 14, 2011 are included in the Company's operating results. The Company has allocated the purchase price to the assets acquired and liabilities assumed, of which $11.5 million has been allocated to goodwill (which is deductible for income tax purposes), $9.5 million to customer lists (amortized over a life of ten years) and $0.2 million to other intangibles assets (amortized over a life of three years).

On September 10, 2011, the Company acquired Packaging Materials Company, a corrugated products manufacturer located near Huntsville, Alabama, for $8.6 million. Sales and total assets of the acquisition were not material to the Company's overall sales and total assets prior to the acquisition. Operating results of the acquisition subsequent to September 10, 2011 are included in the Company's operating results. The Company has allocated the purchase price to the assets acquired and liabilities assumed, of which, $1.5 million has been allocate to goodwill (which is deductible for income tax purposes).

On November 30, 2011, PCA acquired Colorado Container, a corrugated products manufacturer located in Denver, Colorado, for $21.8 million. Sales and total assets of the acquisition were not material to PCA's overall sales and total assets prior to the acquisition. Operating results of the acquisition subsequent to November 30, 2011 are included in the Company's operating results. The Company is currently allocating the purchase price to the assets acquired and liabilities assumed.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 88-16
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51, 52
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Appendix F
-Paragraph F4
-Subparagraph e

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 67-73
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6911361&loc=d3e6927-128479

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 4
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 17: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Valdosta Mill Fire Insurance Recovery

12 Months Ended

Dec. 31, 2011

Valdosta Mill Fire Insurance Recovery [Abstract]

Valdosta Mill Fire Insurance Recovery

19.

VALDOSTA MILL FIRE INSURANCE RECOVERY

On April 4, 2011, the Company's Valdosta, Georgia mill had a fire that was confined to the turbine generator room. The fire resulted in production and sales volume losses of 11,000 tons and significant repair and demolition expenses to affected buildings and equipment. PCA is insured for the lost production, replacement value of destroyed assets, and related expenses, subject to a $3.0 million deductible. The Company filed an insurance claim for the total cost of the fire and received $6.5 million, net of the $3.0 million deductible, for losses incurred and capital expenditures during the second quarter of 2011. During the third and fourth quarters of 2011, the Company received an additional $1.5 million and $1.4 million, respectively, in insurance proceeds for capital expenditures. The $9.4 million in insurance proceeds is included in net cash provided by operating activities ($5.5 million) and in net cash used for investing activities ($3.9 million) based on the nature of the reimbursement. PCA expects to receive additional insurance proceeds for capital expenditures as work is completed.

Subsequent Events

12 Months Ended

Dec. 31, 2011

Subsequent Events [Abstract]

Subsequent Events

20.

SUBSEQUENT EVENTS

The Company has disclosed the following subsequent event in accordance with ASC 855, "Subsequent Events." Subsequent events have been evaluated through the filing date of this Form 10-K.

•

On February 3, 2012, PCA amended its 2009 tax return to reflect a change in claimed gallons between the alternative fuel mixture credits and the cellulosic biofuel producer credits. This change is expected to result in a first quarter 2012 non-cash, after-tax charge of $23 million.

Quarterly Financial Data

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Quarterly Financial Data

21.

QUARTERLY FINANCIAL DATA (UNAUDITED)


	Fiscal Quarter
	First		Second		Third			Fourth		Total
	(In thousands, except per share amounts)
2011:
Net sales	$	629,500	$	665,481	$	670,824		$	654,306	$	2,620,111
Gross profit		133,141		136,901		137,747			134,157		541,946
Income from operations		65,903		67,859		71,180			67,807		272,749
Net income		37,417		39,368		41,777			39,465		158,027
Basic earnings per share		0.37		0.39		0.42			0.41		1.59
Diluted earnings per share		0.37		0.39		0.42			0.40		1.57
Stock price — high		30.69		29.88		29.19			27.16		30.69
Stock price — low		25.96		26.26		21.05			21.75		21.05
2010:
Net sales	$	550,732	$	615,459	$	642,764		$	626,651	$	2,435,606
Gross profit		86,799		131,665		166,452			147,284		532,200
Income from operations		33,616		67,746		(12,342	)		96,362		185,382
Net income		19,194		38,030		93,320			54,891		205,435
Basic earnings per share		0.19		0.37		0.92			0.54		2.02
Diluted earnings per share		0.19		0.37		0.91			0.54		2.00
Stock price — high		25.83		26.48		25.50			27.08		27.08
Stock price — low		20.63		20.00		21.19			22.68		20.00

Note:

The sum of the quarters may not equal the total of the respective year's earnings per share on either a basic or diluted basis due to changes in the weighted average shares outstanding throughout the year.

For the three months ended March 31, June 30, September 30, and December 31, 2011 net income was decreased by $2.1 million or $0.02 per share, $1.2 million or $0.01 per share, $1.0 million or $0.01 per share, and $0.5 million, or $0.005 per share, respectively, due to asset disposal charges related to major energy projects.

For the three months ended June 30, 2011, net income was increased by $1.0 million or $0.01 per share due to an adjustment to reserves related to medical benefits.

For the three months ended September 30, 2010, income from operations was decreased by $111.9 million due to the reversal of a portion of income previously recorded from alternative fuel mixture tax credits in order to claim the cellulosic biofuel producer credits that are recorded as a benefit in the provision for income taxes.

For the three months ended March 31, September 30, and December 31, 2010, net income was increased by $9.2 million or $0.09 per share, $33.4 million or $0.33 per share, and $5.0 million or $0.05 per share, respectively, due to the alternative energy tax credits.

For the three months ended March 31, June 30, September 30, and December 31, 2010, net income was decreased by $2.5 million or $0.02 per share, $1.1 million or $0.01 per share, $1.8 million or $0.02 per share, and $3.2 million or $0.03 per share, respectively, due to asset disposal and facilities closure charges.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation And Qualifying Accounts [Abstract]

Valuation And Qualifying Accounts

Schedule II — Packaging Corporation of America — Valuation and Qualifying Accounts.


Description	Balance Beginning of Year		Charged to Expenses			Deductions			Balance End of Year
	(Dollars in thousands)
Year ended December 31, 2011:
Deducted from assets accounts:
Allowance for doubtful accounts	$	2,493	$	90		$	(677	)(1)	$	1,906
Reserve for customer deductions		2,920		30,009			(29,801	)(2)		3,128

Total	$	5,413	$	30,099		$	(30,478	)	$	5,034

Year ended December 31, 2010:
Deducted from assets accounts:
Allowance for doubtful accounts	$	3,909	$	(937	)	$	(479	)(1)	$	2,493
Reserve for customer deductions		2,439		27,007			(26,526	)(2)		2,920

Total	$	6,348	$	26,070		$	(27,005	)	$	5,413

Year ended December 31, 2009:
Deducted from assets accounts:
Allowance for doubtful accounts	$	4,355	$	1,506		$	(1,952	)(1)	$	3,909
Reserve for customer deductions		2,507		22,683			(22,751	)(2)		2,439

Total	$	6,862	$	24,189		$	(24,703	)	$	6,348

(1)	Consists primarily of uncollectable accounts written off, net of recoveries, during the year.

(2)	Consists primarily of discounts taken by customers during the year.

All other schedules for which provision is made in the applicable accounting regulations of the Securities and Exchange Commission are not required under the related instructions, are inapplicable or not material, or the information called for thereby is otherwise included in the financial statements or the accompanying notes to the financial statements and therefore, have been omitted.

Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Basis Of Consolidation

Basis of Consolidation

Use Of Estimates

Use of Estimates

Cash And Cash Equivalents

Cash and Cash Equivalents

Accounts Receivable

Accounts Receivable

Inventories

Inventories

The components of inventories are as follows:


	December 31,
	2011			2010
	(In thousands)
Raw materials	$	126,489		$	126,401
Work in process		7,610			6,395
Finished goods		74,391			73,710
Supplies and materials		115,541			102,720

Inventories at FIFO or average cost		324,031			309,226
Excess of FIFO or average cost over LIFO cost		(69,356	)		(68,084	)

Inventories, net	$	254,675		$	241,142

Property, Plant And Equipment

Property, Plant and Equipment

Property, plant and equipment are recorded at cost, and consist of the following:


	December 31,
	2011			2010
	(In thousands)
Land and land improvements	$	102,483		$	98,197
Buildings		377,664			350,301
Machinery and equipment		3,045,145			2,753,258
Construction in progress		66,098			212,931
Other		27,170			24,834

Property, plant and equipment, at cost		3,618,560			3,439,521
Less accumulated depreciation		(2,141,906	)		(2,101,535	)

Property, plant and equipment, net	$	1,476,654		$	1,337,986

The amount of interest capitalized related to construction in progress was $7.1 million, $4.8 million and $0.9 million for the years ended December 31, 2011, 2010 and 2009, respectively.


Buildings and land improvements			5 to 40 years
Machinery and equipment			3 to 25 years
Trucks and automobiles			3 to 10 years
Furniture and fixtures			3 to 20 years
Computers and hardware			3 to 7 years

Leasehold improvements			Period of the lease or useful life, if shorter

Goodwill And Intangible Assets

Goodwill and Intangible Assets

Other Long-Term Assets

Other Long-Term Assets

Impairment Of Long-Lived Assets

Impairment of Long-Lived Assets

Pension And Postretirement Benefits

Pension and Postretirement Benefits

For postretirement health care plan accounting, the Company reviews external data and its own historical trends for health care costs to determine the health care cost trend rate assumption.

Environmental Matters

Environmental Matters

Asset Retirement Obligations

Asset Retirement Obligations

Income Taxes

Income Taxes

PCA's practice is to recognize interest and penalties related to uncertain tax positions in income tax expense.

Fair Value Of Financial Instruments

Fair Value of Financial Instruments

Level 1 — Valuations based on quoted prices for identical assets and liabilities in active markets.

Level 3 — Valuations based on unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

Planned Major Maintenance Activities

Planned Major Maintenance Activities

Revenue Recognition

Revenue Recognition

Research And Development

Research and Development

Interest Expense, Net

Interest Expense, Net

Trade Agreements

Trade Agreements

Segment Information

Segment Information

Derivative Instruments And Hedging Activities

Derivative Instruments and Hedging Activities

Reclassifications

Reclassifications

Certain immaterial reclassifications have been made to prior fiscal year balances to conform to the presentation of the current fiscal year.

Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Components Of Inventories


	December 31,
	2011			2010
	(In thousands)
Raw materials	$	126,489		$	126,401
Work in process		7,610			6,395
Finished goods		74,391			73,710
Supplies and materials		115,541			102,720

Inventories at FIFO or average cost		324,031			309,226
Excess of FIFO or average cost over LIFO cost		(69,356	)		(68,084	)

Inventories, net	$	254,675		$	241,142

Property, Plant And Equipment, At Cost


	December 31,
	2011			2010
	(In thousands)
Land and land improvements	$	102,483		$	98,197
Buildings		377,664			350,301
Machinery and equipment		3,045,145			2,753,258
Construction in progress		66,098			212,931
Other		27,170			24,834

Property, plant and equipment, at cost		3,618,560			3,439,521
Less accumulated depreciation		(2,141,906	)		(2,101,535	)

Property, plant and equipment, net	$	1,476,654		$	1,337,986

Estimated Useful Lives Of Assets


Buildings and land improvements			5 to 40 years
Machinery and equipment			3 to 25 years
Trucks and automobiles			3 to 10 years
Furniture and fixtures			3 to 20 years
Computers and hardware			3 to 7 years

Leasehold improvements			Period of the lease or useful life, if shorter

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share [Abstract]

Computation Of Basic And Diluted Income Per Common Share


	Year Ended December 31,
	2011		2010		2009
	(In thousands, except per share data)
Numerator:
Net income	$	158,027	$	205,435	$	265,895
Denominator:
Basic common shares outstanding		99,281		101,678		101,577
Effect of dilutive securities:
Stock options		282		238		74
Unvested restricted stock		813		692		707

Diluted common shares outstanding		100,376		102,608		102,358

Basic income per common share	$	1.59	$	2.02	$	2.62
Diluted income per common share	$	1.57	$	2.00	$	2.60

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Compensation Expense For Stock Options And Restricted Stock


	Year Ended December 31,
	2011			2010			2009
	(In thousands)
Stock options	$	—		$	226		$	720
Restricted stock		9,736			6,780			6,541

Impact on income before income taxes		9,736			7,006			7,261
Income tax benefit		(3,784	)		(2,721	)		(2,827	)

Impact on net income	$	5,952		$	4,285		$	4,434

Summary Of Stock Option Activity


	Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
								(In thousands)
Outstanding at December 31, 2008		2,227,032		$	19.85
Exercised		(185,801	)		8.69
Forfeited		(67,930	)		19.11

Outstanding at December 31, 2009		1,973,301			20.92
Exercised		(394,420	)		19.01
Forfeited		(10,497	)		24.62

Outstanding at December 31, 2010		1,568,384			21.38
Exercised		(343,685	)		20.34

Outstanding and exercisable at December 31, 2011		1,224,699		$	21.64		1.5	$	4,485

Summary Of Restricted Stock Activity


	2011						2010						2009
	Shares			Fair Market Value at Date of Grant			Shares			Fair Market Value at Date of Grant			Shares			Fair Market Value at Date of Grant
	(Dollars in thousands)
Restricted stock at January 1		1,478,000		$	30,600			1,235,505		$	24,718			1,038,270		$	23,023
Granted		575,694			16,005			573,440			12,693			444,985			6,995
Vested		(229,979	)		(5,816	)		(318,350	)		(6,563	)		(237,370	)		(5,079	)
Cancellations		(5,970	)		(134	)		(12,595	)		(248	)		(10,380	)		(221	)

Restricted stock at December 31		1,817,745		$	40,655			1,478,000		$	30,600			1,235,505		$	24,718

Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2011

Accrued Liabilities [Abstract]

Components Of Accrued Liabilities


	December 31,
	2011		2010
	(In thousands)
Derivative — treasury lock	$	48,829	$	—
Bonuses and incentives and related payroll taxes		31,480		32,345
Medical insurance and workers' compensation		18,685		16,242
Customer volume discounts and rebates		18,656		17,631
Vacation and holiday pay		16,576		16,012
Franchise, property, sales and use taxes		8,711		9,218
Current portion of pension and postretirement benefits		6,284		5,253
Payroll and payroll taxes		6,409		5,138
Other		7,629		7,388

Total	$	163,259	$	109,227

Employee Benefit Plans And Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2011

Employee Benefit Plans And Other Postretirement Benefits [Abstract]

Components Of Net Periodic Benefit Costs


	Pension Plans									Postretirement Plans
	2011			2010			2009			2011			2010			2009
	(In thousands)
Change in Benefit Obligation
Benefit obligation at beginning of period	$	246,985		$	203,292		$	178,455		$	23,215		$	20,080		$	17,300
Service cost		19,808			18,315			17,955			1,599			1,399			1,341
Interest cost		13,473			12,091			10,208			1,189			1,130			1,022
Plan amendments		1,827			837			7,168			—			—			—
Actuarial loss		35,399			15,153			701			755			1,931			987
Participant contributions		—			—			—			942			838			656
Benefits paid		(3,337	)		(2,703	)		(11,195	)		(1,763	)		(2,163	)		(1,226	)

Benefit obligation at plan year end	$	314,155		$	246,985		$	203,292		$	25,937		$	23,215		$	20,080

Accumulated benefit obligation portion of above	$	280,820		$	214,676		$	171,384

Change in Fair Value of Plan Assets
Plan assets at fair value at beginning of period	$	167,033		$	140,065		$	97,248		$	—		$	—		$	—
Actual return on plan assets		(732	)		14,457			18,590			—			—			—
Company contributions		22,158			15,214			35,422			821			1,325			570
Participant contributions		—			—			—			942			838			656
Benefits paid		(3,337	)		(2,703	)		(11,195	)		(1,763	)		(2,163	)		(1,226	)

Fair value of plan assets at plan year end	$	185,122		$	167,033		$	140,065		$	—		$	—		$	—

Components Of Amounts Recognized In Balance Sheet


	Pension Plans						Postretirement Plans
	December 31, 2011			December 31, 2010			December 31, 2011			December 31, 2010
	(In thousands)
Development of Net Amount Recognized
Benefit obligation in excess of plan assets at December 31	$	(129,033	)	$	(79,952	)	$	(25,937	)	$	(23,215	)

Amounts Recognized in Statement of Financial Position
Current liabilities	$	(5,232	)	$	(4,107	)	$	(1,052	)	$	(1,146	)
Noncurrent liabilities		(123,801	)		(75,845	)		(24,885	)		(22,069	)

Accrued benefit recognized at December 31	$	(129,033	)	$	(79,952	)	$	(25,937	)	$	(23,215	)

Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax
Prior service cost	$	23,573		$	25,957		$	(481	)	$	(734	)
Actuarial loss		45,791			15,714			5,193			5,001

Total	$	69,364		$	41,671		$	4,712		$	4,267

Components Of Net Periodic Benefit Cost


	Pension Plans									Postretirement Plans
	2011			2010			2009			2011			2010			2009
	(In thousands)
Components of Net Periodic Benefit Cost
Service cost for benefits earned during the year	$	19,808		$	18,315		$	17,955		$	1,599		$	1,399		$	1,341
Interest cost on accumulated benefit obligation		13,473			12,091			10,208			1,189			1,130			1,022
Expected return on plan assets		(13,544	)		(11,207	)		(8,573	)		—			—			—
Net amortization of unrecognized amounts
Prior service cost		5,782			5,685			4,903			(416	)		(416	)		(416	)
Actuarial loss		411			247			803			449			342			328
Other		—			—			(126	)		—			—			—

Net periodic benefit cost	$	25,930		$	25,131		$	25,170		$	2,821		$	2,455		$	2,275

Schedule Of Weighted-Average Assumptions Used To Determine Benefit And Net Periodic Benefit Cost


	Pension Plans									Postretirement Plans
	2011			2010			2009			2011			2010			2009
Weighted-Average Assumptions Used to Determine Benefit Obligations at December 31
Discount rate		4.75	%		5.50	%		6.00	%		4.50	%		5.25	%		5.75	%
Rate of compensation increase		4.00	%		4.00	%		4.00	%		N/A			N/A			N/A
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost for the Years Ended December 31
Discount rate		5.50	%		6.00	%		6.00	%		5.25	%		5.75	%		6.00	%
Expected return on plan assets		7.75	%		7.75	%		8.25	%		N/A			N/A			N/A
Rate of compensation increase		4.00	%		4.00	%		4.00	%		N/A			N/A			N/A

Schedule Of Assumed Health Care Cost Trend Rates For Its Postretirement Benefits


	2011			2010			2009
Health care cost trend rate assumed for next year		8.00	%		7.50	%		7.50	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)		5.50	%		5.00	%		5.00	%
Year that the rate reaches the ultimate trend rate		2016			2016			2015

Schedule Of Effects Of One-Percentage Point Change In Assumed Health Care Cost Trend Rates On Its Postretirement Benefits


	1-Percentage Point Increase		1-Percentage Point Decrease
	(In thousands)
Effect on postretirement benefit obligation	$	662	$	(587	)
Effect on net postretirement benefit cost		65		(56	)

Schedule Of Pension Plans' Assets Investments


	Percentage of Fair Value
	2011			2010
Equity securities		36	%		39	%
Debt securities		63	%		60	%
Other		1	%		1	%

Schedule Of Pension Plans' Assets Fair Value Measured On A Recurring Basis


	Fair Value Measurements at December 31, 2011
Asset Category	Total		Quoted Prices in Active Markets for identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In thousands)
Short-term investments	$	1,257	$	—	$	1,257	$	—
Equity securities:
U.S. large value		11,272		11,272
U.S. large growth		9,172		9,172
U.S. mid-cap value		1,914		1,914
U.S. mid-cap growth		3,684		3,684
U.S. small blend		3,784				3,784
Foreign large blend		27,164		27,164
Diversified emerging markets		5,306		5,306
Real estate		5,405		5,405
Debt securities:
Government bonds		24,372				24,372
Corporate bonds		91,792		36,929		54,863

Total	$	185,122	$	100,846	$	84,276	$	—


	Fair Value Measurements at December 31, 2010
Asset Category	Total		Quoted Prices in Active Markets for identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(In thousands)
Short-term investments	$	1,320	$	—	$	1,320	$	—
Equity securities:
U.S. large value		10,594		10,594
U.S. large growth		8,519		8,519
U.S. mid-cap value		1,871		1,871
U.S. mid-cap growth		3,486		3,486
U.S. small blend		3,394				3,394
Foreign large blend		26,616		26,616
Diversified emerging markets		5,219		5,219
Real estate		5,095		5,095
Debt securities:
Government bonds		21,088				21,088
Corporate bonds		79,831		33,240		46,591

Total	$	167,033	$	94,640	$	72,393	$	—

Schedule Of Estimated Benefit Payments


	Pension Plans		Postretirement Plans
	(In thousands)
2012	$	5,232	$	1,052
2013		6,655		1,139
2014		8,157		1,226
2015		9,813		1,380
2016		11,457		1,481
2017 — 2021		85,357		10,258

Goodwill And Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill And Other Intangible Assets [Abstract]

Changes In The Carrying Amount Of Goodwill


(In thousands)
Balance as of December 31, 2010 and 2009	$	38,854
Acquisitions		19,360

Balance at December 31, 2011	$	58,214

Components Of Other Intangible Assets


	Weighted Average Remaining Life		As of December 31, 2011				As of December 31, 2010
	Weighted Average Remaining Life		Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Customer relationships		18.7 years	$	32,520	$	7,771	$	17,441	$	6,466
Other		2.6years		349		56		—		—

Total other intangible assets			$	32,869	$	7,827	$	17,441	$	6,466

- Definition

Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill.

+ References + Details

Debt (Tables)

12 Months Ended

Dec. 31, 2011

Debt [Abstract]

Summary Of Debt


	December 31,
	2011		2010
	(In thousands)
Receivables credit facility, effective interest rate of 1.15% and 1.56% as of December 31, 2011 and 2010, respectively, due October 11, 2014	$	109,000	$	109,000
Senior credit facility — Term loan, effective interest rate of 2.08% as of December 31, 2011, due October 11, 2016		150,000		—
Senior notes, net of discount of $514 and $857 as of December 31, 2011 and 2010, respectively, interest at 5.75% payable semi-annually, due August 1, 2013		399,486		399,143
Senior notes, net of discount of $38 and $44 as of December 31, 2011 and 2010, respectively, interest at 6.50% payable semi-annually, due March 15, 2018		149,962		149,956

Total		808,448		658,099
Less current portion		15,000		109,000

Total long-term debt	$	793,448	$	549,099

Additional Information On Variable Rate Debt


	Reference Interest Rate						Applicable Margin
	December 31,						December 31,
	2011			2010			2011			2010
Receivables credit facility		0.30	%		0.26	%		0.85	%		1.30	%
Senior credit facility		0.58	%		—			1.50	%		—

Summary Of Drawings Under Revolving Credit Facilities


	Commitments		Utilized		Available
	(In thousands)
Receivables credit facility	$	200,000	$	109,000	$	91,000
Senior revolving credit facility		250,000		14,312		235,688

	$	450,000	$	123,312	$	326,688

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

+ Details

Derivative Instruments And Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2011

Derivative Instruments And Hedging Activities [Abstract]

Impact Of Derivative Instruments On Statements Of Income And Accumulated OCI


	Amount of Net Gain (Loss) Recognized in OCI (Effective Portion) December 31,
	2011			2010
	(In thousands)
Treasury locks, net of tax	$	(23,289	)	$	2,164
Foreign currency exchange contracts, net of tax		(413	)		(607	)

Total	$	(23,702	)	$	1,557


	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) Year Ended December 31,
Location	2011			2010		2009
Interest expense, net	$	1,846		$	1,846	$	1,846
Cost of sales		(7	)		—		—

- Definition

Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

+ References + Details

Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2011

Financial Instruments [Abstract]

Carrying And Estimated Fair Values Of Financial Instruments


	2011						2010
	Carrying Amount			Fair Value			Carrying Amount			Fair Value
	(In thousands)
Cash and cash equivalents	$	156,313		$	156,313		$	196,556		$	196,556
Long-term debt —
5.75% senior notes		(399,486	)		(423,324	)		(399,143	)		(430,464	)
6.50% senior notes		(149,962	)		(174,576	)		(149,956	)		(158,800	)
Term loan		(150,000	)		(150,000	)		—			—
Receivables credit facility		(109,000	)		(109,000	)		(109,000	)		(109,000	)
Capital lease obligation		(21,832	)		(21,832	)		(22,502	)		(22,502	)

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements [Abstract]

Assets And Liabilities Measured At Fair Value On A Recurring Basis


	As of December 31, 2011
					Measurement Approach					As of December 31, 2010
	Carrying Value		Fair Value		Level		Valuation Technique			Carrying Value		Fair Value
	(In thousands)
Current Assets
Money market funds	$	155,814	$	155,814		1		(a	)	$	196,058	$	196,058
Foreign currency exchange contracts		—		—		2		(a	)		12		12
Long-Term Assets
Treasury locks		—		—		2		(a	)		872		872
Accrued Liabilities
Treasury locks		48,829		48,829		2		(a	)		—		—

Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Schedule Of Minimum Lease Payments Under Non-Cancelable Operating Leases


	(In thousands)
2012	$	32,103
2013		28,384
2014		20,465
2015		13,049
2016		8,676
Thereafter		45,413

Total	$	148,090

Schedule Of Assets Held Under Capital Lease Obligations


	December 31,
	2011			2010
	(In thousands)
Buildings	$	250		$	250
Machinery and equipment		23,602			23,602

Total		23,852			23,852
Less accumulated amortization		(5,028	)		(3,481	)

Total	$	18,824		$	20,371

Schedule Of Future Minimum Payments Under Capitalized Leases


	(In thousands)
2012	$	2,202
2013		2,202
2014		2,202
2015		2,202
2016		2,202
Thereafter		25,872

Total minimum capital lease payments		36,882
Less amounts representing interest		15,050

Present value of net minimum capital lease payments		21,832
Less current maturities of capital lease obligations		718

Total long-term capital lease obligations	$	21,114

Schedule Of Purchase Commitments


	(In thousands)
2012	$	6,099
2013		4,903
2014		1,486
2015		1,486
2016		1,486
Thereafter		18,387

Total	$	33,847

Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2011

Asset Retirement Obligations [Abstract]

Components Of Changes In Asset Retirement Obligation Liability


	2011		2010
	(In thousands)
Asset retirement obligation, January 1	$	4,884	$	4,521
Accretion expense		211		363
Payments		—		—

Asset retirement obligation, December 31	$	5,095	$	4,884

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components Of Consolidated Income Tax Provision


	2011			2010			2009
	(In thousands)
Current —
U.S.	$	41,452		$	44,595		$	52,704
State and local		16,678			23,653			12,191

Total current provision for taxes		58,130			68,248			64,895

Deferred —
U.S.		29,895			(117,945	)		(11,745	)
State and local		(2,548	)		(2,634	)		(2,074	)

Total deferred provision for taxes		27,347			(120,579	)		(13,819	)

Total provision (benefit) for taxes	$	85,477		$	(52,331	)	$	51,076

Summary Of Effective Tax Rate


	2011			2010			2009
	(In thousands)
Provision computed at U.S. Federal statutory rate of 35%	$	85,226		$	53,586		$	110,939
Alternative fuel mixture and cellulosic biofuel producer credits		—			(104,785	)		(61,673	)
State and local taxes, net of federal benefit		7,504			7,694			4,566
Domestic manufacturers deduction		(7,670	)		(7,540	)		(2,956	)
Other		417			(1,286	)		200

Total	$	85,477		$	(52,331	)	$	51,076

Deferred Income Tax Assets And Liabilities


	December 31,
	2011			2010
	(In thousands)
Deferred tax assets:
Accrued liabilities	$	5,287		$	6,538
Employee benefits and compensation		15,100			15,794
Inventories		6,809			4,758
Stock options and restricted stock		8,596			7,485
Pension and postretirement benefits		60,455			41,930
Derivatives		15,072			—
Cellulosic biofuel tax credit carryforward		167,452			200,334

Total deferred tax assets	$	278,771		$	276,839

Deferred tax liabilities:
Property, plant and equipment	$	(216,109	)	$	(225,620	)
Goodwill and intangible assets		(10,676	)		(8,174	)
Investment in joint venture		(1,121	)		(1,049	)
Derivatives		—			(954	)

Total deferred tax liabilities	$	(227,906	)	$	(235,797	)

Net deferred tax assets	$	50,865		$	41,042

Net Deferred Tax Assets (Liabilities) Classified In Balance Sheet


	December 31,
	2011			2010
	(In thousands)
Current deferred tax assets	$	62,789		$	50,232
Non-current deferred tax liabilities		(11,924	)		(9,190	)

Net deferred tax assets	$	50,865		$	41,042

Summary Of Uncertain Tax Position


	2011			2010
	(In thousands)
Balance as of January 1	$	(112,311	)	$	(9,041	)
Increases related to prior years' tax positions		(56	)		(104,721	)
Increases related to current year tax positions		(624	)		(692	)
Settlements with taxing authorities		—			424
Expiration of the statute of limitations		1,978			1,719

Balance at December 31	$	(111,013	)	$	(112,311	)

- Definition

Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

+ References + Details

Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2011

Related Party Financial information


	Year Ended December 31,
	2011			2010			2009
	(In thousands)
Net sales	$	1,719		$	4,548		$	5,172
Gross profit (loss)		(16,389	)		(1,219	)		(450	)
Gain from sale of timberlands		—			13,299			—
Net income (loss)		(22,387	)		5,784			(5,912	)

Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Data [Abstract]

Summary Of Quarterly Financial Data


	Fiscal Quarter
	First		Second		Third			Fourth		Total
	(In thousands, except per share amounts)
2011:
Net sales	$	629,500	$	665,481	$	670,824		$	654,306	$	2,620,111
Gross profit		133,141		136,901		137,747			134,157		541,946
Income from operations		65,903		67,859		71,180			67,807		272,749
Net income		37,417		39,368		41,777			39,465		158,027
Basic earnings per share		0.37		0.39		0.42			0.41		1.59
Diluted earnings per share		0.37		0.39		0.42			0.40		1.57
Stock price — high		30.69		29.88		29.19			27.16		30.69
Stock price — low		25.96		26.26		21.05			21.75		21.05
2010:
Net sales	$	550,732	$	615,459	$	642,764		$	626,651	$	2,435,606
Gross profit		86,799		131,665		166,452			147,284		532,200
Income from operations		33,616		67,746		(12,342	)		96,362		185,382
Net income		19,194		38,030		93,320			54,891		205,435
Basic earnings per share		0.19		0.37		0.92			0.54		2.02
Diluted earnings per share		0.19		0.37		0.91			0.54		2.00
Stock price — high		25.83		26.48		25.50			27.08		27.08
Stock price — low		20.63		20.00		21.19			22.68		20.00

Note:

Nature Of Business (Details)	1 Months Ended		12 Months Ended
Nature Of Business (Details)	Apr. 30, 2009 years	Aug. 31, 2008 years	Dec. 31, 2011
Nature Of Business [Line Items]
Total number of employees of PCA			8,300
Percentage of hourly employees represented by unions			75.00%
USW [Member]
Nature Of Business [Line Items]
Percentage of hourly employees represented by unions		88.00%
Number of contract years extended under labor agreement	5	5
Other Unions [Member]
Nature Of Business [Line Items]
Percentage of hourly employees represented by unions			12.00%
Minimum [Member] \| USW [Member]
Nature Of Business [Line Items]
Expiration date of labor agreement			September 2013
Minimum [Member] \| Other Unions [Member]
Nature Of Business [Line Items]
Expiration date of labor agreement			June 2012
Minimum [Member] \| Contracts For Unionized Corrugated Products Plant Employees [Member]
Nature Of Business [Line Items]
Expiration date of labor agreement			February 2012
Maximum [Member] \| USW [Member]
Nature Of Business [Line Items]
Expiration date of labor agreement			June 2015
Maximum [Member] \| Other Unions [Member]
Nature Of Business [Line Items]
Expiration date of labor agreement			October 2014
Maximum [Member] \| Contracts For Unionized Corrugated Products Plant Employees [Member]
Nature Of Business [Line Items]
Expiration date of labor agreement			December 2017
Kraft Linerboard Mills [Member]
Nature Of Business [Line Items]
Number of plants			2
Medium Mills [Member]
Nature Of Business [Line Items]
Number of plants			2
Corrugated Plants [Member]
Nature Of Business [Line Items]
Number of plants			71
Corrugated Plants [Member] \| USW [Member]
Nature Of Business [Line Items]
Number of plants	25
Combining Plants [Member]
Nature Of Business [Line Items]
Number of plants			41
Sheet Plants [Member]
Nature Of Business [Line Items]
Number of plants			30
Technical And Development Centers [Member]
Nature Of Business [Line Items]
Number of plants			1
Graphic Design Centers [Member]
Nature Of Business [Line Items]
Number of plants			6
Salaried [Member]
Nature Of Business [Line Items]
Total number of employees of PCA			2,500
Hourly [Member]
Nature Of Business [Line Items]
Total number of employees of PCA			5,800

Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($) A years	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of joint ventures accounted for under equity method	1
Customer returns, allowances and earned discounts as a percentage of gross selling price	1.00%
Reserve for customer accounts receivable, percentage	1.00%
Allowance for doubtful accounts	$ 1,900	$ 2,500
Reserve for customer deductions	3,100	2,900
Inventories valued using the LIFO method, amount	197,300	199,500
Inventory values before LIFO inventory reserve	324,031	309,226
Interest capitalization, construction in progress	7,100	4,800	$ 900
Depreciation expense	$ 161,500	154,000	148,200
Amortization period of customer lists and relationships, minimum, in years	6
Amortization period of customer lists and relationships, maximum, in years	40
Goodwill	$ 58,214	38,854
Unamortized deferred financing costs	$ 2,600	1,300
Area leased under timberland cutting rights (acres) \| A	88,000
Long-term lease costs capitalization	$ 26,200	24,500
Depletion expense	40	500	1,200
Net capitalized software costs	1,900	1,500
Software amortization expense	600	600	500
Research and development costs	12,500	10,900	9,400
Interest income included in net interest expense	20	40	100
Amortization of the net gain on treasury lock settlements	$ (1,846)	$ (1,846)	$ (1,846)
Percent of net sales threshold used to determine major customers	10.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Term of senior credit facilities and notes, in years \| years	5
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Term of senior credit facilities and notes, in years \| years	10

Summary Of Significant Accounting Policies (Components Of Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Summary Of Significant Accounting Policies [Abstract]
Raw materials	$ 126,489	$ 126,401
Work in process	7,610	6,395
Finished goods	74,391	73,710
Supplies and materials	115,541	102,720
Inventories at FIFO or average cost	324,031	309,226
Excess of FIFO or average cost over LIFO cost	(69,356)	(68,084)
Inventories, net	$ 254,675	$ 241,142

- Definition

Carrying amount as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

+ References + Details

Summary Of Significant Accounting Policies (Property, Plant And Equipment, At Cost) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 3,618,560	$ 3,439,521
Less accumulated depreciation	(2,141,906)	(2,101,535)
Property, plant and equipment, net	1,476,654	1,337,986
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	102,483	98,197
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	377,664	350,301
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	3,045,145	2,753,258
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	66,098	212,931
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 27,170	$ 24,834

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References + Details

Summary Of Significant Accounting Policies (Estimated Useful Lives Of Assets) (Details)	12 Months Ended
	Dec. 31, 2011 years
Buildings And Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, minimum (in years)	5
Estimated useful life of asset, maximum (in years)	40
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, minimum (in years)	3
Estimated useful life of asset, maximum (in years)	25
Trucks And Automobiles [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, minimum (in years)	3
Estimated useful life of asset, maximum (in years)	10
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, minimum (in years)	3
Estimated useful life of asset, maximum (in years)	20
Computers And Hardware [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, minimum (in years)	3
Estimated useful life of asset, maximum (in years)	7
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset, description	Period of the lease or useful life, if shorter

Earnings Per Share (Narrative) (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009
Earnings Per Share [Abstract]
Options to purchase shares outstanding not included in the computation of diluted common shares outstanding	0.6	1.8

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Earnings Per Share (Computation Of Basic And Diluted Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Earnings Per Share [Abstract]
Net income	$ 39,465	$ 41,777	$ 39,368	$ 37,417	$ 54,891	$ 93,320	$ 38,030	$ 19,194	$ 158,027	$ 205,435	$ 265,895
Basic common shares outstanding									99,281	101,678	101,577
Stock options									282	238	74
Unvested restricted stock									813	692	707
Diluted common shares outstanding									100,376	102,608	102,358
Basic income per common share	$ 0.41	$ 0.42	$ 0.39	$ 0.37	$ 0.54	$ 0.92	$ 0.37	$ 0.19	$ 1.59	$ 2.02	$ 2.62
Diluted income per common share	$ 0.40	$ 0.42	$ 0.39	$ 0.37	$ 0.54	$ 0.91	$ 0.37	$ 0.19	$ 1.57	$ 2.00	$ 2.60

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 36, 37, 38
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 20

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 7
-Paragraph 18

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 21
-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
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-Paragraph 2
-Subparagraph (SX 210.5-03.21)
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
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-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

- Definition

This element represents nonvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid). Basic and dilutive earnings per share are generally disclosed for such shares using the two-class method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-6
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 60
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Participating Security
-URI http://asc.fasb.org/extlink&oid=6519812

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
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-SubTopic 10
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-Paragraph 61A
-URI http://asc.fasb.org/extlink&oid=6920599&loc=SL5780137-109256

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 10, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28, 29, 30
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 19

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 20
-Article 9

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Net Income
-URI http://asc.fasb.org/extlink&oid=6518256

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Other Comprehensive Income
-URI http://asc.fasb.org/extlink&oid=6519514

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.18)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.19)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e565-108580

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.22)
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph A7
-Appendix A

+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References + Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1448-109256

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Stock-Based Compensation (Narrative) (Details) $ in Millions	12 Months Ended			48 Months Ended
	Dec. 31, 2011 USD ($) years shares	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2011 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option awards granted \| shares				0
Long-term equity incentive plan, termination date	October 19, 2014
Number of shares authorized under plan \| shares	8,550,000			8,550,000
Options and restricted stock granted, net of forfeitures \| shares	7,659,255
Total intrinsic value of options exercised \| $	$ 2.8	$ 2.4	$ 1.7
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to stock option awards granted under the equity incentive plan \| $	$ 0.0			$ 0.0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of equity awards granted to employees, years	4 years
Unrecognized compensation cost related to stock option awards granted under the equity incentive plan \| $	$ 21.6			$ 21.6
Expected weighted-average period to recognize the cost of stock awards (in years) \| years	2.6

Stock-Based Compensation (Compensation Expense For Stock Options And Restricted Stock) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on income before income taxes	$ 9,736	$ 7,006	$ 7,261
Income tax benefit	(3,784)	(2,721)	(2,827)
Impact on net income	5,952	4,285	4,434
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on income before income taxes		226	720
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Impact on income before income taxes	$ 9,736	$ 6,780	$ 6,541

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References + Details

Stock-Based Compensation (Summary Of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($) years $ / shares shares	Dec. 31, 2010 $ / shares shares	Dec. 31, 2009 $ / shares shares
Stock-Based Compensation [Abstract]
Options, Outstanding, Beginning Balance \| shares	1,568,384	1,973,301	2,227,032
Options, Exercised \| shares	(343,685)	(394,420)	(185,801)
Options, Forfeited \| shares		(10,497)	(67,930)
Options, Outstanding, Ending Balance \| shares		1,568,384	1,973,301
Options, Outstanding and exercisable, Ending Balance \| shares	1,224,699
Weighted-Average Exercise Price, Outstanding, Beginning Balance \| $ / shares	$ 21.38	$ 20.92	$ 19.85
Weighted-Average Exercise Price, Exercised \| $ / shares	20.34	19.01	8.69
Weighted-Average Exercise Price, Forfeited \| $ / shares		24.62	19.11
Weighted-Average Exercise Price, Outstanding, Ending Balance \| $ / shares		$ 21.38	$ 20.92
Weighted-Average Exercise Price, Outstanding and exercisable, Ending Balance \| $ / shares	$ 21.64
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm \| years	1.5
Aggregate Intrinsic Value, Outstanding and exercisable, Ending Balance \| $	$ 4,485

Stock-Based Compensation (Summary Of Restricted Stock Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock-Based Compensation [Abstract]
Restricted stock, Shares, Beginning Balance	1,478,000	1,235,505	1,038,270
Restricted stock, Fair Market Value at Date of Grant, Beginning Balance	$ 30,600	$ 24,718	$ 23,023
Restricted stock, Shares, Granted	575,694	573,440	444,985
Restricted stock, Granted, Fair Market Value at Date of Grant	$ 16,005	$ 12,693	$ 6,995
Restricted stock, Shares, Vested	(229,979)	(318,350)	(237,370)
Restricted stock, Vested, Fair Market Value at Date of Grant	$ (5,816)	$ (6,563)	$ (5,079)
Restricted stock, Shares, Cancellations	(5,970)	(12,595)	(10,380)
Restricted stock, Cancellations, Fair Market Value at Date of Grant	$ (134)	$ (248)	$ (221)
Restricted stock, Shares, Ending Balance	1,817,745	1,478,000	1,235,505
Restricted stock, Fair Market Value at Date of Grant, Ending Balance	$ 40,655	$ 30,600	$ 24,718

Accrued Liabilities (Components Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Accrued Liabilities [Abstract]
Derivative - treasury lock	$ 48,829
Bonuses and incentives and related payroll taxes	31,480	$ 32,345
Medical insurance and workers' compensation	18,685	16,242
Customer volume discounts and rebates	18,656	17,631
Vacation and holiday pay	16,576	16,012
Franchise, property, sales and use taxes	8,711	9,218
Current portion of pension and postretirement benefits	6,284	5,253
Payroll and payroll taxes	6,409	5,138
Other	7,629	7,388
Total	$ 163,259	$ 109,227

Employee Benefit Plans And Other Postretirement Benefits (Narrative) (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2011 USD ($) years shares	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit medical plans, description	plan covers employees retiring from PCA on or after attaining age <font class="_mt">58</font> who have had at least <font class="_mt">10</font> years of full-time service with PCA after attaining age <font class="_mt">48</font>.
Minimum retirement age for medical benefit plan coverage, years \| years	58
Minimum service period for medical benefit plan coverage, years \| years	10
Employee age after which minimum service period to be completed for medical benefit plan coverage, years \| years	48
Minimum age at which the avaliablility of medical coverage of retirees is curtailed	65
Number of retirees affected by plan amendment	50
Percentage determining the amount of unrecognized net gain or loss to be amortized	10.00%
Expected pension contributions in next fiscal year	$ 32.6
Expected pension plan expense in next fiscal year	36.0
Net Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost, expected to be realized	6.0
Prior service cost, expected to be realized, net of tax	3.7
Actuarial loss, expected to be realized	4.9
Actuarial loss, expected to be realized, net of tax	3.0
Net Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service cost, expected to be realized	(0.4)
Prior service cost, expected to be realized, net of tax	0.3
Actuarial loss, expected to be realized	0.5
Actuarial loss, expected to be realized, net of tax	0.3
Defined Contribution Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's contribution to pension plan	10.4	$ 9.6	$ 9.4
Retirement contribution expenses	$ 3.9	$ 3.1	$ 2.8
Employee Stock Ownership Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's common stock \| shares	2.6
Minimum [Member] \| Defined Contribution Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's contribution to pension plan, percentage	3.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Pactiv pension plan participation period, years	five
Maximum [Member] \| Defined Contribution Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's contribution to pension plan, percentage	5.00%

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Pension And Postretirement Benefit Plans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]
Plan assets at fair value at beginning of period	$ 167,033
Fair value of plan assets at plan year end	185,122	$ 167,033
Net Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of period	246,985	203,292	$ 178,455
Service cost	19,808	18,315	17,955
Interest cost	13,473	12,091	10,208
Plan amendments	1,827	837	7,168
Actuarial loss	35,399	15,153	701
Participant contributions
Benefits paid	(3,337)	(2,703)	(11,195)
Benefit obligation at plan year end	314,155	246,985	203,292
Accumulated benefit obligation portion of above	280,820	214,676	171,384
Plan assets at fair value at beginning of period	167,033	140,065	97,248
Actual return on plan assets	(732)	14,457	18,590
Company contributions	22,158	15,214	35,422
Fair value of plan assets at plan year end	185,122	167,033	140,065
Net Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of period	23,215	20,080	17,300
Service cost	1,599	1,399	1,341
Interest cost	1,189	1,130	1,022
Plan amendments
Actuarial loss	755	1,931	987
Participant contributions	942	838	656
Benefits paid	(1,763)	(2,163)	(1,226)
Benefit obligation at plan year end	25,937	23,215	20,080
Accumulated benefit obligation portion of above
Plan assets at fair value at beginning of period
Actual return on plan assets
Company contributions	$ 821	1,325	570
Fair value of plan assets at plan year end

Employee Benefit Plans And Other Postretirement Benefits (Components Of Amounts Recognized In Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Amounts Recognized in Statement of Financial Position, Current liabilities	$ (6,284)	$ (5,253)
Amounts Recognized in Statement of Financial Position, Noncurrent liabilities	(148,686)	(97,914)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Total	74,076	45,938
Net Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Amounts Recognized in Statement of Financial Position, Current liabilities	(5,232)	(4,107)
Amounts Recognized in Statement of Financial Position, Noncurrent liabilities	(123,801)	(75,845)
Amounts Recognized in Statement of Financial Position, Accrued benefit recognized at December 31	(129,033)	(79,952)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Prior service cost	23,573	25,957
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Actuarial loss	45,791	15,714
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Total	69,364	41,671
Net Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Amounts Recognized in Statement of Financial Position, Current liabilities	(1,052)	(1,146)
Amounts Recognized in Statement of Financial Position, Noncurrent liabilities	(24,885)	(22,069)
Amounts Recognized in Statement of Financial Position, Accrued benefit recognized at December 31	(25,937)	(23,215)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Prior service cost	(481)	(734)
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Actuarial loss	5,193	5,001
Amounts Recognized in Accumulated Other Comprehensive Income (Loss), Net of Tax, Total	$ 4,712	$ 4,267

- Definition

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph i
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e637-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e681-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e653-108580

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

+ Details

- Definition

This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

+ References

+ Details

- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

+ Details

Employee Benefit Plans And Other Postretirement Benefits (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned during the year	$ 19,808	$ 18,315	$ 17,955
Interest cost on accumulated benefit obligation	13,473	12,091	10,208
Expected return on assets	(13,544)	(11,207)	(8,573)
Net amortization of unrecognized amounts, Prior service cost	5,782	5,685	4,903
Net amortization of unrecognized amounts, Actuarial loss	411	247	803
Other			(126)
Net periodic benefit cost	25,930	25,131	25,170
Net Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned during the year	1,599	1,399	1,341
Interest cost on accumulated benefit obligation	1,189	1,130	1,022
Expected return on assets
Net amortization of unrecognized amounts, Prior service cost	(416)	(416)	(416)
Net amortization of unrecognized amounts, Actuarial loss	449	342	328
Other
Net periodic benefit cost	$ 2,821	$ 2,455	$ 2,275

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Weighted-Average Assumptions Used To Determine Benefit And Net Periodic Benefit Cost) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-Average Assumptions Used to Determine Benefit Obligations, Discount rate	4.75%	5.50%	6.00%
Weighted-Average Assumptions Used to Determine Benefit Obligations, Rate of compensation increase	4.00%	4.00%	4.00%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost, Discount rate	5.50%	6.00%	6.00%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost, Expected return on plan assets	7.75%	7.75%	8.25%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost, Rate of compensation increase	4.00%	4.00%	4.00%
Net Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-Average Assumptions Used to Determine Benefit Obligations, Discount rate	4.50%	5.25%	5.75%
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost, Discount rate	5.25%	5.75%	6.00%

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Assumed Health Care Cost Trend Rates For Its Postretirement Benefits) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Employee Benefit Plans And Other Postretirement Benefits [Abstract]
Health care cost trend rate assumed for next year	8.00%	7.50%	7.50%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.50%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2016	2016	2015

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Effects Of One-Percentage Point Change In Assumed Health Care Cost Trend Rates On Its Postretirement Benefits) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($)
Employee Benefit Plans And Other Postretirement Benefits [Abstract]
Effect on postretirement benefit obligation, 1-Percentage Point Increase	$ 662
Effect on postretirement benefit obligation, 1-Percentage Point Decrease	(587)
Effect on net postretirement benefit cost, 1-Percentage Point Increase	65
Effect on net postretirement benefit cost, 1-Percentage Point Decrease	$ (56)

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Pension Plans' Assets Investments) (Details)	Dec. 31, 2011	Dec. 31, 2010
Employee Benefit Plans And Other Postretirement Benefits [Abstract]
Percentage of Fair Value, Equity securities	36.00%	39.00%
Percentage of Fair Value, Debt securities	63.00%	60.00%
Percentage of Fair Value, Other	1.00%	1.00%

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Pension Plans' Assets Fair Value Measured On A Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	$ 185,122	$ 167,033
Short-Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	1,257	1,320
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	100,846	94,640
Level 1 [Member] \| Short-Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	84,276	72,393
Level 2 [Member] \| Short-Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	1,257	1,320
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Level 3 [Member] \| Short-Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
U.S. Large Value [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	11,272	10,594
U.S. Large Value [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	11,272	10,594
U.S. Large Value [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
U.S. Large Growth [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	9,172	8,519
U.S. Large Growth [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	9,172	8,519
U.S. Large Growth [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
U.S. Mid-Cap Value [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	1,914	1,871
U.S. Mid-Cap Value [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	1,914	1,871
U.S. Mid-Cap Value [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
U.S. Mid-Cap Growth [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	3,684	3,486
U.S. Mid-Cap Growth [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	3,684	3,486
U.S. Mid-Cap Growth [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
U.S. Small Blend [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	3,784	3,394
U.S. Small Blend [Member] \| Level 2 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	3,784	3,394
U.S. Small Blend [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Foreign Large Blend [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	27,164	26,616
Foreign Large Blend [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	27,164	26,616
Foreign Large Blend [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Diversified Emerging Markets [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	5,306	5,219
Diversified Emerging Markets [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	5,306	5,219
Diversified Emerging Markets [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Real Estate [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	5,405	5,095
Real Estate [Member] \| Level 1 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	5,405	5,095
Real Estate [Member] \| Level 3 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Government Bonds [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	24,372	21,088
Government Bonds [Member] \| Level 2 [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	24,372	21,088
Government Bonds [Member] \| Level 3 [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets
Corporate Bonds [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	91,792	79,831
Corporate Bonds [Member] \| Level 1 [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	36,929	33,240
Corporate Bonds [Member] \| Level 2 [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets	54,863	46,591
Corporate Bonds [Member] \| Level 3 [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total fair value of pension plans' assets

Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Estimated Benefit Payments) (Details) $ in Thousands	Dec. 31, 2011 USD ($)
Net Pension Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
2012	$ 5,232
2013	6,655
2014	8,157
2015	9,813
2016	11,457
2017 - 2021	85,357
Net Postretirement Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
2012	1,052
2013	1,139
2014	1,226
2015	1,380
2016	1,481
2017 - 2021	$ 10,258

Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill And Other Intangible Assets [Abstract]
Intangible asset amortization expense	$ 1.4	$ 0.8	$ 0.9
Estimated amortization of intangible assets, 2012	2.0
Estimated amortization of intangible assets, 2013	2.0
Estimated amortization of intangible assets, 2014	1.9
Estimated amortization of intangible assets, 2015	1.8
Estimated amortization of intangible assets, 2016	$ 1.8

Goodwill And Other Intangible Assets (Changes In The Carrying Amount Of Goodwill) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($)
Goodwill And Other Intangible Assets [Abstract]
Balance as of December 31, 2010 and 2009	$ 38,854
Acquisitions	19,360
Balance at December 31, 2011	$ 58,214

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Goodwill And Other Intangible Assets (Components Of Other Intangible Assets) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($) years	Dec. 31, 2010 USD ($)
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 32,869	$ 17,441
Accumulated Amortization	$ 7,827	6,466
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Intangible asset, useful life, in years \| years	18.7
Gross Carrying Amount	$ 32,520	17,441
Accumulated Amortization	$ 7,771	6,466
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Intangible asset, useful life, in years \| years	2.6
Gross Carrying Amount	$ 349
Accumulated Amortization	$ 56

Debt (Narrative) (Details) - USD ($) $ in Thousands				12 Months Ended
Debt (Narrative) (Details) - USD ($) $ in Thousands	Oct. 11, 2011	Mar. 25, 2008	Jul. 21, 2003	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Debt Instrument [Line Items]
Credit facility borrowing capacity				$ 450,000
Outstanding letters of credit				14,300
Annual principal maturities for debt, 2012				15,000
Annual principal maturities for debt, year two				415,000
Annual principal maturities for debt, year three				124,000
Annual principal maturities for debt, year four				15,000
Annual principal maturities for debt, year five				90,000
Annual principal maturities for debt, after year five				150,000
Interest payments for debt obligations				35,200	$ 35,300	$ 35,700
Credit facility outstanding				$ 123,312
4.375% Senior Notes [Member]
Debt Instrument [Line Items]
Offerings to qualified institutional investors			$ 150,000
Senior notes, stated percentage			4.375%
Debt Instrument Maturity Year			2008
5.75% Senior Notes [Member]
Debt Instrument [Line Items]
Offerings to qualified institutional investors			$ 400,000
Senior notes, stated percentage			5.75%	5.75%	5.75%
Senior notes				$ 399,486	$ 399,143
Debt instrument maturity				Aug. 01, 2013
Debt Instrument Maturity Year			2013
6.50% Senior Notes [Member]
Debt Instrument [Line Items]
Offerings to qualified institutional investors		$ 150,000
Senior notes, stated percentage		6.50%		6.50%	6.50%
Senior notes				$ 149,962	$ 149,956
Debt instrument maturity				Mar. 15, 2018
Debt Instrument Maturity Year		March 15, 2018
Old Senior Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, expiration date	April 2013
New Senior Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, expiration date				October 11, 2016
Outstanding letters of credit				$ 14,300
Unused borrowing capacity				235,700
New Senior Credit Facility [Member] \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Credit facility borrowing capacity	$ 150,000
New Senior Credit Facility [Member] \| Letters Of Credit [Member]
Debt Instrument [Line Items]
Credit facility borrowing capacity	50,000
New Senior Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility borrowing capacity	$ 250,000
Amended Receivables Credit Facility Agreement [Member]
Debt Instrument [Line Items]
Credit facility, expiration date	October 11, 2014
Credit facility borrowing capacity	$ 200,000
Unused borrowing capacity				$ 91,000
Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, effective interest rate				1.15%	1.56%
Credit facility, expiration date				October 11, 2014
Credit facility borrowing capacity	$ 150,000			$ 200,000
Credit facility outstanding				109,000
Outstanding principal balance, maximum				109,000
Receivables Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility borrowing capacity				$ 200,000

Debt (Summary Of Debt) (Details) - USD ($) $ in Thousands	12 Months Ended
Debt (Summary Of Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010	Mar. 25, 2008	Jul. 21, 2003
Debt Instrument [Line Items]
Credit facility due	$ 109,000	$ 109,000
Total	808,448	658,099
Less current portion	15,000	109,000
Total long-term debt	793,448	549,099
5.75% Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, net of discount	399,486	399,143
Discount on senior notes	$ 514	$ 857
Senior notes, stated percentage	5.75%	5.75%		5.75%
Debt instrument maturity	Aug. 01, 2013
6.50% Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, net of discount	$ 149,962	$ 149,956
Discount on senior notes	$ 38	$ 44
Senior notes, stated percentage	6.50%	6.50%	6.50%
Debt instrument maturity	Mar. 15, 2018
Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility due	$ 109,000	$ 109,000
Credit facility, effective interest rate	1.15%	1.56%
Credit facility, expiration date	October 11, 2014
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility due	$ 150,000
Credit facility, effective interest rate	2.08%
Credit facility, expiration date	October 11, 2016

Debt (Additional Information On Variable Rate Debt) (Details)	Dec. 31, 2011	Dec. 31, 2010
Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Reference Interest Rate	0.30%	0.26%
Applicable Margin	0.85	1.30
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Reference Interest Rate	0.58%
Applicable Margin	1.50

Debt (Summary Of Drawings Under Revolving Credit Facilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Oct. 11, 2011
Line of Credit Facility [Line Items]
Commitments	$ 450,000
Utilized	123,312
Available	326,688
Receivables Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitments	200,000	$ 150,000
Utilized	109,000
Available	91,000
Senior Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitments	250,000
Utilized	14,312
Available	$ 235,688

Derivative Instruments And Hedging Activities (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Derivative [Line Items]
(Proceeds from) or payments to settlement of interest rate protection agreement	$ (9,910)
Term of debt securities, in years	10
Outstanding senior notes	$ 400,000
Senior notes, maturity year	2013
Foreign currency forward contracts settled for a loss, amount	$ 700
Number of foreign currency forward contracts outstanding	0
Fair Value of treasury lock	$ 48,800
Notional amount of interest rate protection agreement outstanding	$ 400,000
Interest rate contracts, expected year of maturity	2012
Amount of gain (loss) to be reclassified from accumulated OCI into income	$ 1,800
Amount of gain (loss) to be reclassified from accumulated OCI into income, net of tax	1,200
Ineffective portion of derivative instruments	0
2003 Interest Rate Protection Agreement [Member]
Derivative [Line Items]
(Proceeds from) or payments to settlement of interest rate protection agreement	(22,800)
2008 Interest Rate Protection Agreement [Member]
Derivative [Line Items]
(Proceeds from) or payments to settlement of interest rate protection agreement	4,400
2010 Interest Rate Protection Agreement [Member]
Derivative [Line Items]
(Proceeds from) or payments to settlement of interest rate protection agreement	$ (9,900)

Derivative Instruments And Hedging Activities (Impact Of Derivative Instruments On Statements Of Income And OCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Net Gain (Loss) Recognized in OCI (Effective Portion)	$ (23,702)	$ 1,557
Interest Expense, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	1,846	1,846	$ 1,846
Cost Of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(7)
Treasury Locks, Net Of Tax [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Net Gain (Loss) Recognized in OCI (Effective Portion)	(23,289)	2,164
Foreign Currency Exchange Contracts, Net Of Tax [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Net Gain (Loss) Recognized in OCI (Effective Portion)	$ (413)	$ (607)

Financial Instruments (Carrying And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Mar. 25, 2008	Jul. 21, 2003
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying Amount	$ 156,313	$ 196,556	$ 260,727	$ 149,397
Cash and cash equivalents, Fair Value	156,313	196,556
Term loan, Carrying Amount	(150,000)
Term loan, Fair Value	(150,000)
Receivables credit facility, Carrying Amount	(109,000)	(109,000)
Receivables credit facility, Fair Value	(109,000)	(109,000)
Capital lease obligation, Carrying Amount	(21,832)	(22,502)
Capital lease obligation, Fair Value	(21,832)	(22,502)
5.75% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, Carrying Amount	(399,486)	(399,143)
Long-term debt, Fair Value	$ (423,324)	$ (430,464)
Senior notes, stated percentage	5.75%	5.75%				5.75%
6.50% Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, Carrying Amount	$ (149,962)	$ (149,956)
Long-term debt, Fair Value	$ (174,576)	$ (158,800)
Senior notes, stated percentage	6.50%	6.50%			6.50%

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)
$ in Thousands

Dec. 31, 2011

Dec. 31, 2010

Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]

Money market funds, Fair Value

$ 156,313

$ 196,556

Treasury locks, Carrying Value

48,829

Treasury locks, Fair Value

48,800

Level 1 [Member]

Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]

Money market funds, Carrying Value

^[1]

155,814

196,058

Money market funds, Fair Value

^[1]

155,814

196,058

Level 2 [Member]

Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]

Foreign currency exchange contracts, Carrying Value

^[1]

Foreign currency exchange contracts, Fair Value

^[1]

Treasury locks, Carrying Value

^[1]

872

Treasury locks, Fair Value

^[1]

$ 872

Treasury locks, Carrying Value

^[1]

48,829

Treasury locks, Fair Value

^[1]

$ 48,829

[1]	Market approach — prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities

Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions				6 Months Ended	12 Months Ended
	Dec. 14, 2011	Feb. 22, 2011	Oct. 17, 2007	Jun. 30, 2011	Dec. 31, 2011
Stock Repurchase Program [Line Items]
Common stock repurchase authorized amount			$ 150.0
Total stock repurchased, shares				863,466
Common stock repurchase price per share				$ 27.94
Stock Repurchase Program Additional Authorization [Member]
Stock Repurchase Program [Line Items]
Common stock repurchase authorized amount	$ 150.0	$ 100.0
Total stock repurchased, shares					3,960,555
Total stock repurchased, value					$ 99.0
Common stock repurchase price per share					$ 24.99
Treasury stock repurchase authorization amount available					$ 1.0
Treasury Stock [Member]
Stock Repurchase Program [Line Items]
Total stock repurchased, shares					2,355

Commitments And Contingencies (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2011 USD ($) A	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
Commitments And Contingencies [Line Items]
Authorized capital commitments	$ 40,400	$ 143,300
Area leased under timberland cutting rights (acres) \| A	88,000
Total lease expense	$ 46,100	42,000	$ 41,300
Capital lease obligations	21,832	22,502
Purchase commitments, amount	$ 28,500	32,800	37,300
Number of lawsuits filed by the plaintiffs	5
Number of other U.S. and Canadian containerboard producers	PCA and eight other U.S. and Canadian containerboard producers were named as defendants
Remediation costs	$ 3,200
Environmental reserve	$ 10,500
Counce And Valdosta Mills [Member]
Commitments And Contingencies [Line Items]
Authorized capital commitments		109,200
Minimum [Member]
Commitments And Contingencies [Line Items]
Purchase commitments term, years	one
Maximum [Member]
Commitments And Contingencies [Line Items]
Purchase commitments term, years	twenty
Operating Leases [Member] \| Minimum [Member]
Commitments And Contingencies [Line Items]
Lease term, years	one
Operating Leases [Member] \| Maximum [Member]
Commitments And Contingencies [Line Items]
Lease term, years	14
Capital Leases [Member]
Commitments And Contingencies [Line Items]
Interest paid, capital lease obligations	$ 1,500	$ 1,600	$ 1,600

Commitments And Contingencies (Schedule Of Minimum Lease Payments Under Non-Cancelable Operating Leases) (Details) $ in Thousands	Dec. 31, 2011 USD ($)
Commitments And Contingencies [Abstract]
2012	$ 32,103
2013	28,384
2014	20,465
2015	13,049
2016	8,676
Thereafter	45,413
Total	$ 148,090

Commitments And Contingencies (Schedule Of Assets Held Under Capital Lease Obligations) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Capital Leased Assets [Line Items]
Total capital lease assets, Gross	$ 23,852	$ 23,852
Less accumulated amortization	(5,028)	(3,481)
Total capital lease assets, Net	18,824	20,371
Buildings [Member]
Capital Leased Assets [Line Items]
Total capital lease assets, Gross	250	250
Machinery And Equipment [Member]
Capital Leased Assets [Line Items]
Total capital lease assets, Gross	$ 23,602	$ 23,602

Commitments And Contingencies (Schedule Of Future Minimum Payments Under Capitalized Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Commitments And Contingencies [Abstract]
2012	$ 2,202
2013	2,202
2014	2,202
2015	2,202
2016	2,202
Thereafter	25,872
Total minimum capital lease payments	36,882
Less amounts representing interest	15,050
Present value of net minimum capital lease payments	21,832
Less current maturities of capital lease obligations	718	$ 670
Total long-term capital lease obligations	$ 21,114	$ 21,832

Commitments And Contingencies (Schedule Of Purchase Commitments) (Details) $ in Thousands	Dec. 31, 2011 USD ($)
Commitments And Contingencies [Abstract]
2012	$ 6,099
2013	4,903
2014	1,486
2015	1,486
2016	1,486
Thereafter	18,387
Total	$ 33,847

Asset Retirement Obligations (Components Of Changes In Asset Retirement Obligation Liability) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Asset Retirement Obligations [Abstract]
Asset retirement obligation, January 1	$ 4,884	$ 4,521
Accretion expense	211	363
Payments
Asset retirement obligation, December 31	$ 5,095	$ 4,884

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Line Items]
Alternative fuel mixture and cellulosic biofuel producer credits		$ 104,785	$ 61,673
Cash payments for income taxes	$ 52,700	19,100	22,300
Income tax credit carryforwards	167,500
Decrease uncertain tax positions, gross	2,000
Decrease uncertain tax positions, net	1,300
Tax reserve on uncertain tax positions	111,013	112,311	$ 9,041
Unrecognized tax benefits that would impact of effective tax rate	106,800
Income tax, interest expense gross	200	200
Income tax, interest expense net	160	90
Income tax, accrued interest expense gross	2,200	2,000
Income tax, accrued interest expense net	1,400	1,200
Change in uncertain tax positions, minimum	0
Change in uncertain tax positions, maximum	104,700
Cellulosic Biofuel Tax Credits [Member]
Income Taxes [Line Items]
Income tax credit carryforwards	$ 167,500
Tax reserve on uncertain tax positions		$ 102,000
Federal [Member]
Income Taxes [Line Items]
Income tax examination, year of examination	federal examination of the tax years 2002 and 2004 has been concluded. The tax years 2008 — 2011 remain open to federal examination.
Federal [Member] \| Cellulosic Biofuel Tax Credits [Member]
Income Taxes [Line Items]
Income tax examination, year of examination	2009
State [Member]
Income Taxes [Line Items]
Income tax examination, year of examination	The tax years 2002 — 2011 remain open to state examinations.

Income Taxes (Components Of Consolidated Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
U.S., Current	$ 41,452	$ 44,595	$ 52,704
State and local, Current	16,678	23,653	12,191
Total current provision for taxes	58,130	68,248	64,895
U.S., Deferred	29,895	(117,945)	(11,745)
State and local, Deferred	(2,548)	(2,634)	(2,074)
Total deferred provision for taxes	27,347	(120,579)	(13,819)
Total provision (benefit) for taxes	$ 85,477	$ (52,331)	$ 51,076

- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
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-Name Accounting Standards Codification
-Topic 235
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

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-Name Accounting Standards Codification
-Topic 740
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-Name Accounting Standards Codification
-Topic 740
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-Subparagraph (a)
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

+ Details

- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

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-Name Accounting Standards Codification
-Topic 235
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-Publisher FASB
-Name Accounting Standards Codification
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-Name Statement of Financial Accounting Standard (FAS)
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
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-Subparagraph b
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-Name Accounting Standards Codification
-Topic 235
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

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-Name Accounting Standards Codification
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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 8, 16, 17, 289
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+ Details

- Definition

The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
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-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
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-Topic 235
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

+ Details

- Definition

The component of total income tax expense for the period comprised of the increase (decrease) in the entity's state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Income Taxes (Summary Of Effective Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Provision computed at U.S. Federal statutory rate of 35%	$ 85,226	$ 53,586	$ 110,939
Alternative fuel mixture and cellulosic biofuel producer credits		(104,785)	(61,673)
State and local taxes, net of federal benefit	7,504	7,694	4,566
Domestic manufacturers deduction	(7,670)	(7,540)	(2,956)
Other	417	(1,286)	200
Total provision (benefit) for taxes	$ 85,477	$ (52,331)	$ 51,076
U.S. Federal statutory rate	35.00%

Income Taxes (Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Accrued liabilities	$ 5,287	$ 6,538
Employee benefits and compensation	15,100	15,794
Inventories	6,809	4,758
Stock options and restricted stock	8,596	7,485
Pension and postretirement benefits	60,455	41,930
Derivatives	15,072
Cellulosic biofuel tax credit carryforward	167,452	200,334
Total deferred tax assets	278,771	276,839
Property, plant and equipment	(216,109)	(225,620)
Goodwill and intangible assets	(10,676)	(8,174)
Investment in joint venture	(1,121)	(1,049)
Derivatives		(954)
Total deferred tax liabilities	(227,906)	(235,797)
Net deferred tax assets	$ 50,865	$ 41,042

Income Taxes (Net Deferred Tax Assets (Liabilities) Classified In Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Current deferred tax assets	$ 62,789	$ 50,232
Non-current deferred tax liabilities	(11,924)	(9,190)
Net deferred tax assets	$ 50,865	$ 41,042

- Definition

The current portion of the aggregate tax effects as of the balance sheet date of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws; after deducting the allocated valuation allowance, if any, to reduce such amount to net realizable value. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference. An unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward is presented as a reduction of the related deferred tax asset.

+ References + Details

- Definition

Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference.

+ References + Details

Income Taxes (Summary Of Uncertain Tax Position) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Balance as of January 1	$ (112,311)	$ (9,041)
Increases related to prior years' tax positions	(56)	(104,721)
Increases related to current year tax positions	(624)	(692)
Settlements with taxing authorities		424
Expiration of the statute of limitations	1,978	1,719
Balance at December 31	$ (111,013)	$ (112,311)

Alternative Energy Tax Credits (Details) - USD ($)	3 Months Ended			12 Months Ended		24 Months Ended
Alternative Energy Tax Credits (Details) - USD ($)	Dec. 31, 2010	Sep. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2009	Dec. 31, 2009	Jun. 30, 2010
Alternative Energy Tax Credits [Line Items]
Alternative fuel mixture released reserve			$ 9,200,000
Increase in net income due to reserve release			$ 9,200,000
Uncertain tax positions	$ 102,000,000
Tax credits used to offset future cash tax payment				$ 167,500,000
Alternative Fuel Mixture Credits [Member]
Alternative Energy Tax Credits [Line Items]
Refundable tax credit per gallon					$ 0.50	$ 0.50
Alternative fuels produced claimed for alternative energy tax credits				33.00%
Alternative energy tax credits	16,400,000	$ (111,900,000)				$ 185,400,000
Alternative fuel mixture credits					$ 185,400,000
Cellulosic Biofuel Tax Credits [Member]
Alternative Energy Tax Credits [Line Items]
Refundable tax credit per gallon							$ 1.01
Alternative fuels produced claimed for alternative energy tax credits				66.00%
Additional expenses		800,000
Additional expenses, net of tax		500,000
Alternative energy tax credits	5,000,000	33,400,000
Cellulosic biofuel tax credit income impact		$ 145,800,000
Amended 2009 Federal Return [Member]
Alternative Energy Tax Credits [Line Items]
Cellulosic biofuel producer credits	$ 107,000,000

Related Party Transactions (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011
Related Party Transactions [Abstract]
Ownership percentage in STV	29.00%		29.00%
Purchase of pulp from STV	$ 2.7	$ 3.4

Related Party Transactions (Related Party Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Related Party Transaction [Line Items]
Net sales	$ 654,306	$ 670,824	$ 665,481	$ 629,500	$ 626,651	$ 642,764	$ 615,459	$ 550,732	$ 2,620,111	$ 2,435,606	$ 2,147,589
Gross profit (loss)	134,157	137,747	136,901	133,141	147,284	166,452	131,665	86,799	541,946	532,200	426,577
Net income (loss)	$ 39,465	$ 41,777	$ 39,368	$ 37,417	$ 54,891	$ 93,320	$ 38,030	$ 19,194	158,027	205,435	265,895
Southern Timber Venture, LLC [Member]
Related Party Transaction [Line Items]
Net sales									1,719	4,548	5,172
Gross profit (loss)									(16,389)	(1,219)	(450)
Gain from sale of timberlands										13,299
Net income (loss)									$ (22,387)	$ 5,784	$ (5,912)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Acquisitions (Details) $ in Millions	12 Months Ended
Acquisitions (Details) $ in Millions	Dec. 31, 2011 USD ($) years	Nov. 30, 2011 USD ($)	Sep. 10, 2011 USD ($)	Apr. 14, 2011 USD ($)	Jul. 02, 2009 USD ($)
Specialty Sheet Business [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity					$ 3.1
Purchase price allocation to goodwill					$ 1.7
Field Packaging Group [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity				$ 26.9
Purchase price allocation to goodwill	$ 11.5
Packaging Materials Company [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity			$ 8.6
Purchase price allocation to goodwill			$ 1.5
Colorado Container [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity		$ 21.8
Customer Lists [Member] \| Field Packaging Group [Member]
Business Acquisition [Line Items]
Purchase price allocation to intangible assets	$ 9.5
Intangible asset, useful life, in years \| years	10
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Intangible asset, useful life, in years \| years	2.6
Other Intangible Assets [Member] \| Field Packaging Group [Member]
Business Acquisition [Line Items]
Purchase price allocation to intangible assets	$ 0.2
Intangible asset, useful life, in years \| years	3

Valdosta Mill Fire Insurance Recovery (Details) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2011 USD ($)	Sep. 30, 2011 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2011 USD ($) T
Valdosta Mill Fire Insurance Recovery [Abstract]
Sale volume losses, in tons \| T				11,000
Insurance deductible				$ 3.0
Insurance claim, net of deductible	$ 1.4	$ 1.5	$ 6.5	9.4
Insurance proceeds included in net cash provided by operating activities				5.5
Insurance proceeds included in net cash used for investing activities				$ 3.9

- Definition

The gross income statement effect of insurance proceeds for each material event or transaction (that would not reasonably be expected to recur in the foreseeable future) that possesses a high degree of abnormality and are clearly unrelated to, or incidentally related to, the ordinary and typical activities of the entity.

+ References + Details

Subsequent Events (Details) $ in Millions	12 Months Ended
Subsequent Events (Details) $ in Millions	Dec. 31, 2011 USD ($)
Subsequent Events [Abstract]
Non-cash, after-tax charge	$ 23

Quarterly Financial Data (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010
Asset Disposal Charges [Member]
Quarterly Financial Data [Line Items]
Decrease in net income	$ 0.5	$ 1.0	$ 1.2	$ 2.1	$ 3.2	$ 1.8	$ 1.1	$ 2.5
Decrease in net income per share	$ 0.005	$ 0.01	$ 0.01	$ 0.02	$ 0.03	$ 0.02	$ 0.01	$ 0.02
Medical Benefits Reserves [Member]
Quarterly Financial Data [Line Items]
Decrease in net income			$ 1.0
Decrease in net income per share			$ 0.01
Alternative Energy Tax Credits [Member]
Quarterly Financial Data [Line Items]
Decrease in net income					$ 5.0	$ 33.4		$ 9.2
Decrease in net income per share					$ 0.05	$ 0.33		$ 0.09
Decrease in operating income loss						$ 111.9

Quarterly Financial Data (Summary Of Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Quarterly Financial Data [Abstract]
Net sales	$ 654,306	$ 670,824	$ 665,481	$ 629,500	$ 626,651	$ 642,764	$ 615,459	$ 550,732	$ 2,620,111	$ 2,435,606	$ 2,147,589
Gross profit	134,157	137,747	136,901	133,141	147,284	166,452	131,665	86,799	541,946	532,200	426,577
Income from operations	67,807	71,180	67,859	65,903	96,362	(12,342)	67,746	33,616	272,749	185,382	352,454
Net income	$ 39,465	$ 41,777	$ 39,368	$ 37,417	$ 54,891	$ 93,320	$ 38,030	$ 19,194	$ 158,027	$ 205,435	$ 265,895
Basic earnings per share	$ 0.41	$ 0.42	$ 0.39	$ 0.37	$ 0.54	$ 0.92	$ 0.37	$ 0.19	$ 1.59	$ 2.02	$ 2.62
Diluted earnings per share	0.40	0.42	0.39	0.37	0.54	0.91	0.37	0.19	1.57	2.00	$ 2.60
Stock price-high	27.16	29.19	29.88	30.69	27.08	25.50	26.48	25.83	30.69	27.08
Stock price-low	$ 21.75	$ 21.05	$ 26.26	$ 25.96	$ 22.68	$ 21.19	$ 20.00	$ 20.63	$ 21.05	$ 20.00

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

+ Details

- Definition

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Valuation And Qualifying Accounts (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2009

Valuation and Qualifying Accounts Disclosure [Line Items]

Balance Beginning of Year

$ 5,413

$ 6,348

$ 6,862

Charged to Expenses

30,099

26,070

24,189

Deductions

(30,478)

(27,005)

(24,703)

Balance End of Year

5,034

5,413

6,348

Allowance For Doubtful Accounts [Member]

Valuation and Qualifying Accounts Disclosure [Line Items]

Balance Beginning of Year

2,493

3,909

4,355

Charged to Expenses

(937)

1,506

Deductions

^[1]

(677)

(479)

(1,952)

Balance End of Year

1,906

2,493

3,909

Reserve For Customer Deductions [Member]

Valuation and Qualifying Accounts Disclosure [Line Items]

Balance Beginning of Year

2,920

2,439

2,507

Charged to Expenses

30,009

27,007

22,683

Deductions

^[2]

(29,801)

(26,526)

(22,751)

Balance End of Year

$ 3,128

$ 2,920

$ 2,439

[1]	Consists primarily of uncollectable accounts written off, net of recoveries, during the year.
[2]	Consists primarily of discounts taken by customers during the year.

Label	Element	Value
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	$ 23,215,000
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	25,937,000
Pension Plans Defined Benefit [Member]
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	79,952,000
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAggregateBenefitObligation	$ 129,033,000