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Contingencies and Other (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jul. 02, 2011
Loss Contingencies [Line Items]  
Release of remaining litigation reserve $ 3
Kleen Products LLC v. Packaging Corp. of America (N.D. Ill.) [Member]
 
Loss Contingencies [Line Items]  
Number of defendants named 8
Number of similar complaints filed and consolidated 4
Shareholder Actions [Member]
 
Loss Contingencies [Line Items]  
Number of putative class action lawsuits filed 2