Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Dec. 31, 2017
Product warranty rollforward
Beginning balance, January 1	$ 111.5	$ 95.3
Provisions	13.7	27.6
Acquisitions	0.2	0.0
Payments	(10.0)	(15.3)
Translation adjustment	2.1	1.4
Ending balance, March 31	117.5	109.0
Change in year-over-year warranty provision	13.9
Accounts payable and accrued expenses			$ 67.9	$ 69.0
Other non-current liabilities			49.6	42.5
Total product warranty liability	$ 111.5	$ 95.3	$ 117.5	$ 111.5