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Restructuring and Impairments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 30, 2012
Dec. 25, 2011
Dec. 26, 2010
Restructuring Cost and Reserve [Line Items]      
Restructuring and impairment charges, net of releases $ 14.1 $ 2.8 $ 7.0