Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Product warranty rollforward
Beginning balance, January 1	$ 95.3	$ 107.9
Provisions	27.6	24.6
Payments	(15.3)	(19.0)
Translation adjustment	1.4	2.9
Ending balance, March 31	109.0	116.4
Product warranty liability
Accounts payable and accrued expenses			$ 65.0	$ 63.9
Other non-current liabilities			44.0	31.4
Total product warranty liability	$ 95.3	$ 107.9	$ 109.0	$ 95.3
Minimum warranty term (in years)	1 year
Maximum warranty term (in years)	3 years