Accumulated Other Comprehensive Income (Loss) - Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance			$ 385.4
Total other comprehensive income (loss), net of tax	$ 3.0	$ 3.7	(18.7)	$ (10.5)
Balance	450.9		450.9
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(75.8)	(13.8)	(54.1)	0.4
Other comprehensive income (loss) before reclassifications	2.3	3.2	(20.7)	(11.9)
Amounts reclassified from accumulated other comprehensive income (loss)	0.7	0.5	2.0	1.4
Total other comprehensive income (loss), net of tax	3.0	3.7	(18.7)	(10.5)
Balance	(72.8)	(10.1)	(72.8)	(10.1)
Foreign Currency Translation [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(68.7)	(11.1)	(45.4)	3.7
Other comprehensive income (loss) before reclassifications	2.7	2.3	(20.6)	(12.5)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0	0.0	0.0
Total other comprehensive income (loss), net of tax	2.7	2.3	(20.6)	(12.5)
Balance	(66.0)	(8.8)	(66.0)	(8.8)
Unrecognized Post- Retirement Plan Losses [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(5.0)	(1.7)	(5.6)	(1.5)
Other comprehensive income (loss) before reclassifications	(0.1)	(0.1)	0.5	(0.3)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0	0.0	0.0
Total other comprehensive income (loss), net of tax	(0.1)	(0.1)	0.5	(0.3)
Balance	(5.1)	(1.8)	(5.1)	(1.8)
Derivative Financial Instruments [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(2.1)	(1.0)	(3.1)	(1.8)
Other comprehensive income (loss) before reclassifications	(0.3)	1.0	(0.6)	0.9
Amounts reclassified from accumulated other comprehensive income (loss)	0.7	0.5	2.0	1.4
Total other comprehensive income (loss), net of tax	0.4	1.5	1.4	2.3
Balance	$ (1.7)	$ 0.5	$ (1.7)	$ 0.5