Consolidated Statements of Comprehensive (Loss) Income (Unaudited) (Parenthetical) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other comprehensive loss:
Income tax expense (benefit) on translation adjustments on net investment hedge	$ 16.9	$ (0.4)
Income tax expense (benefit) on unrealized gain on investments	0.4	0.3
Income tax expense (benefit) on defined benefit pension plans and retiree health care plan	$ 0.2	$ 0