Other Income (Loss), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	$ 94	$ (1)	$ 48	$ 9
Gain (loss) on extinguishment of debt
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net			5	(2)
Realized and unrealized gain (loss) on derivatives, net
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	120	(3)	100	(3)
Tax settlement loss
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	(23)	0	(23)	0
Dividend expense related to securities sold, not yet purchased
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	0	(1)	0	(3)
(Loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	(5)	(2)	(52)	1
Equity earnings from non-consolidated affiliates
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	9	13	17	24
Foreign currency translation loss
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	(4)	(5)	(2)	(7)
Other
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net	(3)	(3)	3	(1)
France [Member] | (Loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net			(47)
Canada and UK [Member] | (Loss) gain on disposition of assets
Component of Other Income (Loss), Net [Line Items]
Other income (loss), net			$ (5)