Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning			$ (32.4)
Other comprehensive loss before reclassifications			(41.2)
Amounts reclassified out			2.3
Other comprehensive (loss) income, net of tax	(36.6)	21.9	(38.9)	6.4
Balance, ending	(71.3)		(71.3)
Gains (Losses) on Cash Flow Hedges [Member]
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning			(6.0)
Other comprehensive loss before reclassifications			0.5
Amounts reclassified out			1.3
Other comprehensive (loss) income, net of tax			1.8
Balance, ending	(4.2)		(4.2)
Unrealized Gains on Investment Securities [Member]
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning			4.3
Other comprehensive loss before reclassifications			0
Amounts reclassified out			0
Other comprehensive (loss) income, net of tax			0
Balance, ending	4.3		4.3
Defined Benefit Pension and Other Postretirement Plans [Member]
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning			(47.0)
Other comprehensive loss before reclassifications			0.5
Amounts reclassified out			1.0
Other comprehensive (loss) income, net of tax			1.5
Balance, ending	(45.5)		(45.5)
Foreign Currency Translation [Member]
Changes in the Components of Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning			16.3
Other comprehensive loss before reclassifications			(42.2)
Amounts reclassified out			0
Other comprehensive (loss) income, net of tax			(42.2)
Balance, ending	$ (25.9)		$ (25.9)