Income Taxes - Income Before Taxes and Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Domestic and foreign components of income before taxes:
Domestic	$ 18.4	$ 31.6	$ (83.2)
Foreign	159.2	96.4	184.5
Income before income taxes and noncontrolling interest in consolidated subsidiaries	177.6	128.0	101.3
Current income tax (benefit) expense:
Federal	(2.4)	5.7	(1.1)
State	0.3	1.3	0.4
Foreign	59.8	50.0	50.8
Total current income tax expense	57.7	57.0	50.1
Deferred income tax (benefit) expense:
Federal	3.1	(31.1)	0.7
State	(5.3)	(2.4)	(0.1)
Foreign	(32.4)	(0.4)	(9.0)
Total deferred income tax (benefit) expense	(34.6)	(33.9)	(8.4)
Income tax provision	$ 23.1	$ 23.1	$ 41.7