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Product Warranties - Activity Related to Product Warranty Liability (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Guarantees And Product Warranties [Abstract]    
Reserve balance at the beginning of the year $ 24.5 $ 24.7
Provision for warranties issued 16.9 11.6
Settlements made (in cash or in kind) (16.8) (12.6)
Acquisition 0.3  
Reserve balance at end of year $ 24.9 $ 23.7