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Commitments and Contingencies - Changes in Carrying Amount of Service and Product Warranties (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2020
USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]  
Beginning balance $ 32.1
Service and product warranty provision 42.2
Payments (38.3)
Foreign currency translation 0.2
Ending balance $ 36.2