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