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Warranty Costs - Changes in Carrying Amount of Accrued Product Warranty Costs (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross [Roll Forward]      
Balance at beginning of year $ 9.6 $ 10.0 $ 9.4
Accrued current period warranty expense 3.7 3.5 4.0
Payments and adjustments (5.0) (3.9) (3.4)
Balance at end of year $ 8.3 $ 9.6 $ 10.0