Stock Repurchase Program	3 Months Ended
Stock Repurchase Program	Mar. 31, 2012
Stock Repurchase Program [Abstract]
Stock Repurchase Program	12. Stock Repurchase Program On February 22, 2011, PCA announced that its Board of Directors had authorized the repurchase of $100.0 million of the Company's outstanding common stock, which it completed in the first quarter of 2012. Through March 31, 2012, the Company repurchased 3,996,118 shares of common stock, with 35,563 shares repurchased for $1.0 million, or $29.40 per share, during the first quarter of 2012. All repurchased shares were retired prior to March 31, 2012. 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. During the first quarter 2012, the Company repurchased 745,155 shares of common stock for $22.2 million, or $29.77 per share, under this authorization. All repurchased shares were retired prior to March 31, 2012. As of March 31, 2012, $127.8 million of the $150.0 million authorization remained available for repurchase of the Company's common stock.

Tabular disclosure of an entity's treasury stock, including the average cost per share, carrying basis for each class of treasury stock, description of share repurchase program authorized by an entity's board of directors, the number of shares repurchased, the cost of the shares repurchased, the remaining maximum dollar value of shares available for repurchase under the program, the treatment of the purchase price in excess of the current market value, number of shares held for each class of treasury stock, and other information necessary to a fair presentation.

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