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Exit And Disposal Activities (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 29, 2012
Employee
Dec. 31, 2011
Jan. 01, 2011
Restructuring Cost and Reserve [Line Items]      
Exit and disposal costs $ 16.5 $ 12.2  
Accrued restructuring costs 8.8 8.2  
Number of employees 150    
Expected exit and disposal cost 7.2 8.4 10.5
Expected exit and disposal cost, future period $ 7.2