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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. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Sep. 28, 2013
Commitments and Contingencies Disclosure [Abstract]        
Beginning of period $ 17.7 $ 17.9 $ 17.0 $ 18.9
Additions 3.5 3.5 10.4 8.3
Usage (3.6) (2.4) (9.8) (8.2)
End of period $ 17.6 $ 19.0 $ 17.6 $ 19.0