Income Taxes (Components of Income Tax Expense (Benefit)) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S.	$ (292)	$ 674	$ 73
State and Local	16	27	2
Foreign	310	387	372
Total	34	1,088	447
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S.	44	(437)	771
State and Local	0	(5)	12
Foreign	(1,136)	(433)	285
Total	(1,092)	(875)	1,068
Tax expense (benefit)	(1,058)	213	1,515
Income Tax Expense Benefit On Equity In Earnings Of Operating Joint Ventures	19	19	79
Income tax expense (benefit) on discontinued operations	3	8	18
Income Tax Effects Allocated Directly to Equity [Abstract]
Other comprehensive income (loss)	(582)	2,667	1,301
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	(32)	(56)	(19)
Total Income Taxes	$ (1,650)	$ 2,851	$ 2,894