Stockholders' Equity (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss)
December 31, 2015		$ (872.7)
Other comprehensive income (loss) before reclassifications, net of tax		56.8
Reclassification adjustment for net losses (gains) included in net income, net of tax		27.0
Other comprehensive income (loss), net of tax		83.8	$ (124.1)
March 31, 2016		(788.9)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss)
December 31, 2015		(494.2)
Other comprehensive income (loss) before reclassifications, net of tax		33.1
Other comprehensive income (loss), net of tax	[1]	33.1
March 31, 2016		(461.1)
Hedging
Accumulated Other Comprehensive Income (Loss)
December 31, 2015		(87.1)
Other comprehensive income (loss) before reclassifications, net of tax		23.7
Reclassification adjustment for net losses (gains) included in net income, net of tax		22.6
Other comprehensive income (loss), net of tax	[2]	46.3
March 31, 2016		(40.8)
Defined Pension and Other Post-retirement Benefits
Accumulated Other Comprehensive Income (Loss)
December 31, 2015		(291.4)
Reclassification adjustment for net losses (gains) included in net income, net of tax		4.4
Other comprehensive income (loss), net of tax	[3]	4.4
March 31, 2016		$ (287.0)

[1] Net of income tax (expense) benefit of $(2.0) and $8.3 for the three months ended March 31, 2016 and 2015, respectively.

[2] Net of income tax (expense) benefit of $(12.3) and $9.8 for the three months ended March 31, 2016 and 2015, respectively.

[3] Net of income tax (expense) benefit of $(1.9) and $(2.5) for the three months ended March 31, 2016 and 2015, respectively.