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Guarantees - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Guarantees [Abstract]    
Deferred revenue included in other current and non-current liabilities $ 37.9 $ 34.4
Amount of residual value guarantees and buyback commitments given by the company 30.0 30.9
Warranty claims reserves $ 40.3 $ 38.5
Standard product warranties, low end of range (in months) 12 months  
Standard product warranties, high end of range (in months) 60 months