Shareowners' Equity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Stockholders Equity Note [Line Items]
Preferred Stock, Value, Issued	$ 0					$ 0					$ 0		$ 0		$ 0
Common Stock, Value, Issued	0					0					0		0		0
Accumulated other comprehensive income
Beginning balance					(940)					(2,096)	(940)		(2,096)		(3,711)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax											433		1,312		78
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax											(527)		(156)		1,537
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent											(94)		1,156		1,615
Ending balance December 31,	(1,034)					(940)					(1,034)		(940)		(2,096)
Other capital
Additional Paid in Capital, Beginning Balance					31,586					27,628	31,586		27,628		27,627
Contributions And Other											977		3,958		1
Additional Paid in Capital, Ending Balance	32,563					31,586					32,563		31,586		27,628
Retained earnings
Retained Earnings (Accumulated Deficit), Beginning Balance					51,244					51,578	51,244		51,578		45,068
Net earnings (loss) attributable to the Company	773		1,812	1,801	1,818	1,503		1,568	1,569	1,575	6,204		6,215		6,510
Dividends And Other Transactions With Shareowners											(6,283)		(6,549)		0
Retained Earnings (Accumulated Deficit), Ending Balance	51,165					51,244					51,165		51,244		51,578
Total equity
Company shareowners' equity balance at January 1	82,694					81,890					82,694		81,890		77,110	68,984
Noncontrolling interests	432	[1]				707	[1]				432	[1]	707	[1]	690	1,164
Total equity balance at December 31	83,126					82,597					83,126		82,597		77,800
Dividends on preferred stock											$ 298		$ 123

[1] Included accumulated other comprehensive income attributable to noncontrolling interests of $(139) million and $(129) million at December 31, 2013 and 2012, respectively.