Product Warranty (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
Product warranty rollforward
Beginning balance, January 1	$ 111.5	$ 95.3
Provisions	47.5	51.3
Acquisitions	0.2	0.4
Payments	(45.2)	(45.7)
Translation adjustment	(3.7)	5.4
Ending balance, September 30	110.3	106.7
Change in year-over-year warranty provision	(3.8)
Accounts payable and accrued expenses			$ 64.7	$ 69.0
Other non-current liabilities			45.6	42.5
Total product warranty liability	$ 111.5	$ 95.3	$ 110.3	$ 111.5