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Warranties (Detail) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2020
Jun. 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 97.5
Warranty expense 54.7 65.8
Warranty claim payments (66.1) (60.6)
Foreign currency impact/other (2.1) (0.4)
Balance at end of period $ 258.5 $ 256.0