Other Comprehensive Loss - OCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Foreign currency translation adjustments [Abstract]
Foreign currency translation	$ (17.0)	$ (34.5)	$ (60.1)	$ (45.4)
Foreign currency translation, tax	0.0	0.0	0.0	0.0
Foreign currency translation, net of tax	(17.0)	(34.5)	(60.1)	(45.4)
Employee benefit plans:
Employee benefit plans, before tax	0.0	0.4	0.3	0.4
Employee benefit plans, tax	0.0	(0.1)	(0.1)	(0.1)
Net change in employee benefit plans	0.0	0.3	0.2	0.3
Changes in fair value of cash flow hedges:
Changes in fair value of cash flow hedges, before tax	(1.0)	0.0	(2.1)	0.0
Changes in fair value of cash flow hedges, tax	(0.4)	0.0	0.0	0.0
Changes in fair value of cash flow hedges, net of tax	(1.4)	0.0	(2.1)	0.0
Total other comprehensive earnings [Abstract]
Other comprehensive loss, before tax	(18.0)	(34.1)	(61.9)	(45.0)
Other comprehensive loss, tax	(0.4)	(0.1)	(0.1)	(0.1)
Other comprehensive loss, net of tax	$ (18.4)	$ (34.2)	$ (62.0)	$ (45.1)