Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Reconciliation [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%		35.00%	35.00%
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Computed tax benefit at statutory rate	$ (25)	$ (131)	$ (275)
Effects of earnings in jurisdictions outside of U.S.	(12)	(25)	13
Change in valuation allowance	27	145	213
Permanent Items	44	48	44
Indefinite-lived assets	3	3	26
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount	9	(3)	(1)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	(7)	(4)	(3)
Other, net	3	1	16
Income tax provision (benefit)	$ 38	$ 48	$ 41