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Product Warranties - Activity Related to Product Warranty Liability (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Guarantees And Product Warranties [Abstract]    
Reserve balance at the beginning of the year $ 24.7 $ 24.9
Provision for warranties issued 11.6 13.0
Settlements made (in cash or in kind) (12.6) (12.5)
Reserve balance at end of year $ 23.7 $ 25.4