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Discontinued Operations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Dec. 03, 2011
Sep. 03, 2011
May 28, 2011
Mar. 01, 2011
Discontinued Operations [Line Items]        
Sale of the assets, certain liabilities and certain other Company assets       $ 238.8
Estimated pre-closing working capital adjustment       27.0
Reduction in purchase price due to post-closing working capital adjustment     4.2  
Payment to settle agreed upon working capital adjustment 3.9      
Reduction in deferred tax liability   $ 2.1