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Warranties (Detail) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Balance at beginning of year $ 267.7 $ 153.7
Acquisitions 4.3 108.2
Warranty expense 86.8 81.9
Warranty claim payments (95.7) (93.1)
Foreign currency impact/other 1.7 (4.1)
Balance at end of period $ 264.8 $ 246.6