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Product Warranty (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Warranty reserve activity:          
Balance at beginning of period $ 542.0 $ 384.6 $ 521.8 $ 392.8  
Accruals for warranties issued during the period 76.8 57.6 170.1 113.9  
Settlements made (in cash or in kind) during the period (47.4) (38.2) (102.7) (87.6)  
Foreign currency translation 7.9 5.0 (9.9) (10.1)  
Balance at end of period 579.3 409.0 $ 579.3 409.0  
Product warranty period, minimum, years     1 year    
Product warranty period, maximum, years     4 years    
Product warranty accrual, current 482.2 334.3 $ 482.2 334.3 $ 431.6
Product warranty accrual, noncurrent $ 97.1 $ 74.7 $ 97.1 $ 74.7 $ 90.2