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Legal Proceedings (Details)	2 Months Ended
	Oct. 31, 2010
Legal Proceedings [Abstract]
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

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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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- Definition

Identifies individuals or entities that are co-defendants in a lawsuit, and who may have to pay all or a portion of any damages awarded.

+ References

No definition available.

+ Details

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