Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of the components of accumulated other comprehensive income, net of tax
Balance at beginning of period	$ 28.2	$ 182.4	$ 137.8
Other comprehensive income (loss)	(86.4)	(154.3)	42.3
Realized loss on reclassification	14.0	0.1	2.3
Balance at end of period	(44.2)	28.2	182.4
Foreign Currency Translation
Summary of the components of accumulated other comprehensive income, net of tax
Balance at beginning of period	66.0	197.6	170.3
Other comprehensive income (loss)	(62.8)	(131.6)	27.3
Balance at end of period	3.2	66.0	197.6
Pension Liability Adjustment
Summary of the components of accumulated other comprehensive income, net of tax
Balance at beginning of period	(37.8)	(15.2)	(32.5)
Other comprehensive income (loss)	(23.6)	(22.7)	15.0
Realized loss on reclassification	14.0	0.1	2.3
Balance at end of period	$ (47.4)	$ (37.8)	$ (15.2)