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Commitments, Guarantees, Indemnifications and Legal Proceedings (Details) (USD $) In Thousands, unless otherwise specified | 2 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 31, 2010 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract] |  |  |  |  |  |
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 |  | $ 0 | $ 0 | $ 17,600 | [1] | $ 0
[1] | The nine months ended September 30, 2014, includes $17.6 million of costs 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.

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- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
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