Income Taxes Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
United States federal	$ (21.3)	$ 33.8	$ (3.1)
Foreign	25.3	45.6	10.2
State and local	0.0	1.1	1.5
Total current	4.0	80.5	8.6
Deferred:
United States federal	6.0	(42.4)	30.7
Foreign	(4.3)	(27.5)	34.0
State and local	2.9	2.2	(0.8)
Total deferred	4.6	(67.7)	63.9
Total	$ 8.6	$ 12.8	$ 72.5