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Commitments - Activity Related to Product Warranty Liability (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]      
Reserve balance at the beginning of the year $ 24.9 $ 17.2 $ 16.2
Provision for warranties issued 25.4 25.1 25.1
Settlements made (in cash or in kind) (25.8) (25.7) (24.3)
Acquisition   8.9  
Foreign currency 0.2 (0.6) 0.2
Reserve balance at end of year $ 24.7 $ 24.9 $ 17.2