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Commitments and Contingencies - Changes in Carrying Amount of Service and Product Warranties (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]      
Beginning balance $ 33.9 $ 38.1 $ 36.3
Service and product warranty provision 53.8 50.8 60.8
Payments (55.5) (54.6) (59.6)
Foreign currency translation 0.1 0.4 (0.6)
Ending balance $ 32.1 $ 33.9 $ 38.1