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Commitments and Contingencies - Summary of Product Warranty Accrual Activity (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Commitments And Contingencies Disclosure [Abstract]        
Beginning of period $ 17.9 $ 18.4 $ 18.9 $ 18.6
Additions 3.5 2.6 8.3 7.7
Usage (2.4) (2.1) (8.2) (7.4)
End of period $ 19.0 $ 18.9 $ 19.0 $ 18.9