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Property, Plant and Equipment - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 29, 2013
Mar. 31, 2013
Sep. 30, 2012
Sep. 29, 2013
Sep. 30, 2012
Property, Plant and Equipment [Line Items]          
Depreciation and amortization expense $ 14.8   $ 15.2 $ 43.7 $ 46.1
Gain on sale of distribution facility   1.2      
Depreciation expense reduction due to change in useful lives $ 0.4     $ 1.3  
Common Stock [Member]
          
Property, Plant and Equipment [Line Items]          
Change to earnings per share basic for depreciation expense reduction from change in useful lives $ 0.03     $ 0.09  
Change to earnings per share diluted for depreciation expense reduction from change in useful lives $ 0.03     $ 0.08  
Class B Common Stock [Member]
          
Property, Plant and Equipment [Line Items]          
Change to earnings per share basic for depreciation expense reduction from change in useful lives $ 0.03     $ 0.09  
Change to earnings per share diluted for depreciation expense reduction from change in useful lives $ 0.03     $ 0.08