Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Net (loss) income	$ (149.0)	$ (264.3)
Net (loss) income attributable to common stockholders	(150.6)	(272.4)
Net income attributable to noncontrolling interests	(1.6)	(8.1)
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		(1.7)
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)	(177.2)	1.9
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)	6.8	3.0
Foreign currency translation adjustment	(36.8)	(10.4)
Dividends paid		(69.2)
Share-based compensation		35.8
Write-off of excess tax benefits related to share-based compensation		(5.4)
Stock options exercised		0.5
Employee stock purchases		5.1
Employee stock grants		0
Repurchase of employee common stock relinquished for tax withholding		(2.3)
Distributions to noncontrolling interests		(3.3)
Dividend payable to noncontrolling interests		(42.5)
Ending Balance	3,595.1	3,595.1	3,947.9
Common Stock
Net (loss) income attributable to common stockholders		0
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		0
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)		0
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)		0
Foreign currency translation adjustment		0
Dividends paid		0
Share-based compensation		0
Write-off of excess tax benefits related to share-based compensation		0
Stock options exercised		0
Employee stock purchases		0
Employee stock grants		0.1
Repurchase of employee common stock relinquished for tax withholding		0
Distributions to noncontrolling interests		0
Dividend payable to noncontrolling interests		0
Ending Balance	2.9	2.9	2.8
Additional Paid-in Capital
Net (loss) income attributable to common stockholders		0
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		0
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)		0
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)		0
Foreign currency translation adjustment		0
Dividends paid		0
Share-based compensation		35.8
Write-off of excess tax benefits related to share-based compensation		(5.4)
Stock options exercised		0.5
Employee stock purchases		5.1
Employee stock grants		(0.1)
Repurchase of employee common stock relinquished for tax withholding		0
Distributions to noncontrolling interests		0
Dividend payable to noncontrolling interests		0
Ending Balance	2,375.9	2,375.9	2,340.0
Treasury Stock
Net (loss) income attributable to common stockholders		0
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		0
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)		0
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)		0
Foreign currency translation adjustment		0
Dividends paid		0
Share-based compensation		0
Write-off of excess tax benefits related to share-based compensation		0
Stock options exercised		0
Employee stock purchases		0
Employee stock grants		0
Repurchase of employee common stock relinquished for tax withholding		(2.3)
Distributions to noncontrolling interests		0
Dividend payable to noncontrolling interests		0
Ending Balance	(467.0)	(467.0)	(464.7)
Retained Earnings
Net (loss) income attributable to common stockholders		(272.4)
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		0
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)		0
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)		0
Foreign currency translation adjustment		0
Dividends paid		(69.2)
Share-based compensation		0
Write-off of excess tax benefits related to share-based compensation		0
Stock options exercised		0
Employee stock purchases		0
Employee stock grants		0
Repurchase of employee common stock relinquished for tax withholding		0
Distributions to noncontrolling interests		0
Dividend payable to noncontrolling interests		0
Ending Balance	2,108.2	2,108.2	2,449.8
Accumulated Other Comprehensive Loss
Net (loss) income attributable to common stockholders		0
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		(1.7)
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)		1.9
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)		3.0
Foreign currency translation adjustment		(10.4)
Dividends paid		0
Share-based compensation		0
Write-off of excess tax benefits related to share-based compensation		0
Stock options exercised		0
Employee stock purchases		0
Employee stock grants		0
Repurchase of employee common stock relinquished for tax withholding		0
Distributions to noncontrolling interests		0
Dividend payable to noncontrolling interests		0
Ending Balance	(426.4)	(426.4)	(419.2)
Noncontrolling Interests
Net income attributable to noncontrolling interests		8.1
Net change in unrealized holding losses on available-for-sale securities (net of $1.0 tax benefit)		0
Net unrealized gains on cash flow hedges (net of $1.9 tax provision)		0
Postretirement plans and workers’ compensation obligations (net of $1.8 tax provision)		0
Foreign currency translation adjustment		0
Dividends paid		0
Share-based compensation		0
Write-off of excess tax benefits related to share-based compensation		0
Stock options exercised		0
Employee stock purchases		0
Employee stock grants		0
Repurchase of employee common stock relinquished for tax withholding		0
Distributions to noncontrolling interests		(3.3)
Dividend payable to noncontrolling interests		(42.5)
Ending Balance	$ 1.5	$ 1.5	$ 39.2