Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other comprehensive (loss) income:
Income tax expense (benefit) on translation adjustments on net investment hedge	$ 6.4	$ (5.1)	$ (5.6)	$ 11.8
Income tax expense (benefit) on unrealized gain on investments	0.2	(0.7)	0.1	(0.3)
Income tax expense on defined benefit pension plans and retiree health care plan	$ 0.0	$ 0.3	$ (0.3)	$ 0.5