Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net (loss) income	$ (71.2)	$ 87.1	$ (115.3)	$ 67.7
Net change in unrealized holding gains (losses) on available-for-sale securities (net of respective tax provision (benefits) of $0.3, $3.7, ($0.8) and ($0.1))
Unrealized holding gains (losses) on available-for-sale securities	0.5	(7.6)	(1.3)	(13.8)
Less: Reclassification for realized losses included in net (loss) income	0	13.6	0	13.5
Net change in unrealized gains (losses) on available-for-sale securities	0.5	6.0	(1.3)	(0.3)
Net unrealized gains (losses) on cash flow hedges (net of respective tax provision (benefits) of $37.2, ($217.1), $106.1 and ($228.0))
Increase (decrease) in fair value of cash flow hedges	67.9	(339.0)	184.1	(270.3)
Less: Reclassification for realized gains included in net (loss) income	(10.6)	(38.3)	(5.0)	(115.4)
Net unrealized gains (losses) on cash flow hedges	57.3	(377.3)	179.1	(385.7)
Postretirement plans and workers' compensation obligations (net of respective tax provision (benefit) of $4.0, $8.4, ($2.2) and $16.7
Prior service cost for the period	0	0	(17.4)	0
Amortization of actuarial loss and prior service cost included in net (loss) income	6.8	14.2	13.6	28.4
Postretirement plans and workers' compensation obligations	6.8	14.2	(3.8)	28.4
Foreign currency translation adjustment	9.9	(74.5)	26.4	(73.4)
Other comprehensive income (loss), net of income taxes	74.5	(431.6)	200.4	(431.0)
Comprehensive income (loss)	3.3	(344.5)	85.1	(363.3)
Less: Net income (loss) attributable to noncontrolling interests	2.1	(3.2)	6.5	0.8
Comprehensive income (loss) attributable to common stockholders	$ 1.2	$ (341.3)	$ 78.6	$ (364.1)