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Commitments, Guarantees, Indemnifications and Legal Proceedings (Details) (USD $)
In Thousands, unless otherwise specified
 2 Months Ended 3 Months Ended
Oct. 31, 2010
Mar. 31, 2014
Mar. 31, 2013
Legal Proceedings [Line Items]      
Number of other U.S. and Canadian containerboard producers PCA and eight other U.S. and Canadian containerboard producers were named as defendants    
Number of lawsuits filed by the plaintiffs 5    
Class action lawsuit settlement   $ 17,600 [1] $ 0
Accrued Liabilities
      
Legal Proceedings [Line Items]      
Class action lawsuit settlement   $ 17,600 [1]  
[1] The three months ended March 31, 2014, includes $17.6 million of costs accrued for the settlement of the Kleen Products LLC v Packaging Corp. of America et al class action lawsuit. See Note 18, Commitments, Guarantees, Indemnifications and Legal Proceedings, for more information.