Stockholders' Equity (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	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications, net of tax			$ (93.5)
Reclassification adjustment for net losses (gains) included in net income, net of tax			4.1
Other comprehensive income (loss), net of tax	(96.4)	36.6	(89.4)		(39.7)
Accumulated other comprehensive income (loss), net of tax	(430.1)		(430.1)			(340.7)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications, net of tax			(44.4)
Reclassification adjustment for net losses (gains) included in net income, net of tax
Other comprehensive income (loss), net of tax			(44.4)	[1]
Accumulated other comprehensive income (loss), net of tax	(248.7)		(248.7)			(204.3)
Hedging
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications, net of tax			(49.1)
Reclassification adjustment for net losses (gains) included in net income, net of tax			(4.9)
Other comprehensive income (loss), net of tax			(54.0)	[2]
Accumulated other comprehensive income (loss), net of tax	(22.1)		(22.1)			31.9
Defined Pension and Other Post-retirement Benefits
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications, net of tax
Reclassification adjustment for net losses (gains) included in net income, net of tax			9.0
Other comprehensive income (loss), net of tax			9.0	[3]
Accumulated other comprehensive income (loss), net of tax	$ (159.3)		$ (159.3)			$ (168.3)

[1] Net of income tax (expense) benefit of $5.5 and $(0.8) for the three months ended September 30, 2014 and 2013, respectively, and $4.3 and $1.2 for the nine months ended September 30, 2014 and 2013, respectively.

[2] Net of income tax (expense) benefit of $9.9 and $(11.2) for the three months ended September 30, 2014 and 2013, respectively, and $9.0 and $2.8 for the nine months ended September 30, 2014 and 2013, respectively.

[3] Net of income tax (expense) benefit of $(1.4) and $(2.7) for the three months ended September 30, 2014 and 2013, respectively, and $(4.8) and $(8.1) for the nine months ended September 30, 2014 and 2013, respectively.