Consolidated Statements of Comprehensive (Loss) Income (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other comprehensive (loss) income:
Income tax expense (benefit) on translation adjustments on net investment hedge	$ 13.1	$ (6.7)	$ 13.7	$ (2.9)
Income tax expense (benefit) on unrealized gain (loss) on investments	0.4	(0.8)	1.7	(0.8)
Income tax expense (benefit) on defined benefit pension plans and retiree health care plan	$ 0.1	$ 0.3	$ 0.5	$ 1.3