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Guarantees, Indemnities and Warranties - Changes in Product Warranty Accrual (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Warranty accrual – January 1 $ 20.5 $ 17.3
Warranty expense 12.3 10.5
Payments (8.2) (8.5)
Foreign currency and other 0.8 1.2
Warranty accrual – December 31 $ 25.4 $ 20.5