Businesses Held for Sale, Financing Receivables Held for Sale and Discontinued Operations (Assets and Liabilities of Businesses Held for Sale) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Assets
Investment securities (Note 3)	[1]	$ 36,868		$ 38,320
Inventory, Net	[1]	59		50
Assets of businesses held for sale	[1]	121,940		186,924
Liabilities
Short-term Debt		42,880		67,705
Deferred Tax Liabilities, Net	[1]	6,458		3,420
Liabilities of businesses held for sale	[1]	43,642		48,657
Additional disclosures
Proceeds from Divestiture of Businesses, Net of Cash Divested	[1]	42,486	$ 232
Proceeds from sale	[1]	1,274	$ 0
Held for sale
Assets
Cash and cash equivalents		299		676
Investment securities (Note 3)		0		448
Financing receivables - net		4,141		2,144
Property, plant and equipment - net		15		37
Goodwill		366		106
Intangible assets - net		73		13
Other		23		50
Assets of businesses held for sale		4,917		3,474
Liabilities
Short-term Debt		27		435
Bank deposits		0		1,931
Deferred Tax Liabilities, Net		(123)		(31)
Other		356		99
Liabilities of businesses held for sale		$ 260		$ 2,434

[1] Amounts may not add due to rounding.