Accumulated Other Comprehensive Income (Loss) - Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ 440.9
Total other comprehensive income (loss), net of tax	10.5	$ (21.7)
Balance	464.5
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(109.1)	(54.1)
Other comprehensive income (loss) before reclassifications	10.4	(23.0)
Amounts reclassified from accumulated other comprehensive income (loss)	0.1	1.3
Total other comprehensive income (loss), net of tax	10.5	(21.7)
Balance	(98.6)	(75.8)
Foreign Currency Translation [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(104.5)	(45.4)
Other comprehensive income (loss) before reclassifications	10.0	(23.3)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Total other comprehensive income (loss), net of tax	10.0	(23.3)
Balance	(94.5)	(68.7)
Unrecognized Post- Retirement Plan Losses [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(4.6)	(5.6)
Other comprehensive income (loss) before reclassifications	(0.1)	0.6
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Total other comprehensive income (loss), net of tax	(0.1)	0.6
Balance	(4.7)	(5.0)
Derivative Financial Instruments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	0.0	(3.1)
Other comprehensive income (loss) before reclassifications	0.5	(0.3)
Amounts reclassified from accumulated other comprehensive income (loss)	0.1	1.3
Total other comprehensive income (loss), net of tax	0.6	1.0
Balance	$ 0.6	$ (2.1)