Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Warranty reserve activity:
Balance at beginning of period	$ 255.6	$ 230.3
Acquisitions	0.0	0.6
Accruals for warranties issued during the period	51.5	44.0
Settlements made (in cash or in kind) during the period	(39.9)	(40.6)
Foreign currency translation	2.9	7.4
Balance at end of period	$ 270.1	$ 241.7
Product warranty period, minimum, years	1 year
Product warranty period, maximum, years	4 years
Product warranty accrual, current	$ 237.2		$ 223.1
Product warranty accrual, noncurrent	$ 32.9		$ 32.5