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Commitments and Contingencies - Summary of Changes in Warranty Liabilities (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Balance at January 1 $ 7.4 $ 7.7
Provisions to expense 1.0 1.9
Payments (1.3) (1.9)
Balance at March 31 $ 7.1 $ 7.7