Income Taxes - Income Before Taxes and Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Domestic and foreign components of income before taxes:
Domestic	$ 31.6	$ (83.2)	$ (42.4)
Foreign	96.4	184.5	167.0
Income before income taxes and noncontrolling interest in consolidated subsidiaries	128.0	101.3	124.6
Current income tax (benefit) expense:
Federal	5.7	(1.1)	0.2
State	1.3	0.4	0.2
Foreign	50.0	50.8	35.0
Total current income tax expense	57.0	50.1	35.4
Deferred income tax (benefit) expense:
Federal	(31.1)	0.7	(1.8)
State	(2.4)	(0.1)	(0.6)
Foreign	(0.4)	(9.0)	9.8
Total deferred income tax (benefit) expense	(33.9)	(8.4)	7.4
Income tax provision	$ 23.1	$ 41.7	$ 42.8