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Product Warranty (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Warranty reserve activity:      
Balance at beginning of period $ 521.8 $ 392.8  
Accruals for warranties issued during the period 93.3 56.3  
Settlements made (in cash or in kind) during the period (55.3) (49.4)  
Foreign currency translation (17.8) (15.1)  
Balance at end of period $ 542.0 $ 384.6  
Product warranty period, minimum, years 1 year    
Product warranty period, maximum, years 4 years    
Product warranty accrual, current $ 450.0   $ 431.6
Product warranty accrual, noncurrent $ 92.0   $ 90.2