Product Warranty (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Product warranty rollforward
Beginning balance, January 1	$ 95.3	$ 107.9
Provisions	43.9	34.7
Acquisitions	0.0	3.9
Payments	(32.2)	(30.8)
Translation adjustment	3.9	1.2
Ending balance, June 30	110.9	116.9
Product warranty liability
Accounts payable and accrued expenses			$ 67.1	$ 63.9
Other non-current liabilities			43.8	31.4
Total product warranty liability	$ 95.3	$ 107.9	$ 110.9	$ 95.3
Minimum warranty term (in years)	1 year
Maximum warranty term (in years)	3 years