Assets and Liabilities of Businesses Held For Sale and Discontinued Operations (Discontinued Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operations
Total revenues (loss)									$ (268)	$ 186	$ 190
Earnings (loss) from discontinued operations before income taxes									(349)	(484)	(585)
Benefit (provision) for income taxes									227	211	198
Earnings (loss) from discontinued operations, net of taxes									(122)	(273)	(387)
Disposal
Gain (loss) on disposal before income taxes									14	(2,027)	(792)
Benefit (provision) for income taxes									1	246	49
Gain (loss) on disposal, net of taxes									15	(1,781)	(743)
Earnings (loss) from discontinued operations, net of taxes (Note 2)	(140)	57	(36)	12	(1,720)	(91)	(123)	(120)	(107)	(2,054)	(1,130)
Assets
Cash and cash equivalents	133				232				133	232
Financing Receivables - net	0				711				0	711
Other assets	1,092				1,387				1,092	1,387
Assets of discontinued operations	1,225				2,330				1,225	2,330
Liabilities
Deferred income taxes	238				250				238	250
All other liabilities	850				3,540				850	3,540
Liabilities of discontinued operations	$ 1,088				$ 3,790				$ 1,088	$ 3,790