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Warranty Costs - Changes in Carrying Amount of Accrued Product Warranty Costs (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]    
Balance at beginning of period $ 8.3 $ 9.2
Accrued current period warranty expense 1.7 1.7
Payments and adjustments (1.4) (0.8)
Balance at end of period $ 8.6 $ 10.1