Accumulated Other Comprehensive Income (Loss) Table 1 (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
As of December 31, 2014	$ (898.4)
Foreign currency translation adjustments	(630.2)
Unrealized gain (loss) on derivative instruments	6.5
Reclassification of derivative (gain) loss to income	(6.2)
Pension and other postretirement benefit adjustments	(2.2)
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	35.2
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	(3.8)
Tax benefit (expense)	(57.6)
As of September 30, 2015	(1,556.7)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
As of December 31, 2014	129.8
Foreign currency translation adjustments	(630.2)
Unrealized gain (loss) on derivative instruments	0.0
Reclassification of derivative (gain) loss to income	0.0
Pension and other postretirement benefit adjustments	0.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	0.0
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.0
Tax benefit (expense)	(57.2)
As of September 30, 2015	(557.6)
Gain (loss) on derivative instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
As of December 31, 2014	15.0
Foreign currency translation adjustments	0.0
Unrealized gain (loss) on derivative instruments	6.5
Reclassification of derivative (gain) loss to income	(6.2)
Pension and other postretirement benefit adjustments	0.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	0.0
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.0
Tax benefit (expense)	5.6
As of September 30, 2015	20.9
Pension and postretirement benefit adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
As of December 31, 2014	(658.5)
Foreign currency translation adjustments	0.0
Unrealized gain (loss) on derivative instruments	0.0
Reclassification of derivative (gain) loss to income	0.0
Pension and other postretirement benefit adjustments	(2.2)
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	35.2
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.0
Tax benefit (expense)	(7.4)
As of September 30, 2015	(632.9)
Equity method investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
As of December 31, 2014	(384.7)
Foreign currency translation adjustments	0.0
Unrealized gain (loss) on derivative instruments	0.0
Reclassification of derivative (gain) loss to income	0.0
Pension and other postretirement benefit adjustments	0.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	0.0
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	(3.8)
Tax benefit (expense)	1.4
As of September 30, 2015	$ (387.1)