Consolidated Statement Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income (loss)	$ 227		$ 1,093
Depreciation, Amortization and Accretion, Net	738		657
Changes In Fair Value Of Mortgage Servicing Rights	0		90
Provision for Loan Losses Expensed Including Discontinued Operations	137		158
Gain Loss on Sales of Loans Net Including Discontinued Operations	0		(38)
Available-for-sale Securities Gross Realized Gain Loss Excluding Otti Including Disc Ops	(43)		(53)
Gains (Losses) on Extinguishment of Debt	39		0
Payments for Origination and Purchases of Loans Held-for-sale	0		(5,759)
Proceeds from Sale of Loans Held-for-sale	13		7,481
Total Charge Recorded Related to ResCap Bankruptcy	(26)		0
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	0		(888)
Deferred income taxes	68		(116)
Interest payable	5		44
Other assets	191		1,329
Other liabilities	(368)		(1,259)
Other, net	(49)		(485)
Net cash provided by (used in) operating activities	932		2,254
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchases of available-for-sale securities	(907)		(4,626)
Proceeds from sales of available-for-sale securities	1,354		1,543
Proceeds from maturities of available-for-sale securities	592		1,604
Net (increase) decrease in finance receivables and loans	492		(42)
Purchases of operating lease assets	(2,360)		(2,352)
Disposals of operating lease assets	1,285		641
Proceeds from sale of business units, net	0	[1]	2,829	[1]
Increase (Decrease) in Restricted Cash	1,580		1,067
Other, net	111		41
Net cash (used in) provided by investing activities	2,147		705
Net Cash Provided by (Used in) Financing Activities [Abstract]
Net change in short-term borrowings	(3,384)		518
Net increase in bank deposits	2,017		2,360
Proceeds from issuance of long-term debt	9,402		4,253
Repayments of long-term debt	(10,683)		(11,445)
Dividends paid	(68)		(200)
Net cash provided by (used in) financing activities	(2,716)		(4,514)
Effect of exchange-rate changes on cash and cash equivalents	(1)		67
Cash and Cash Equivalents, Period Increase (Decrease)	362		(1,488)
Net Cash Provided by (Used in) Discontinued Operations	0	[1],[2]	1,412	[1],[2]
Cash and cash equivalents at beginning of period	5,531		7,513
Cash and cash equivalents at end of period	5,893		7,437
Cash and cash equivalents of business units at the time of disposition			905
Supplemental Cash Flow Information [Abstract]
Interest	664		1,026
Income taxes	(6)		37
Proceeds from sales and repayments of mortgage loans held-for-investment originally designated as held-for-sale	$ 7		$ 10

[1] The amount at March 31, 2013, is net of cash and cash equivalents of $905 million of business units at the time of disposition.

[2] Cash flows of discontinued operations are reflected within operating, investing, and financing activities in the Condensed Consolidated Statement of Cash Flows. The cash balance of these operations is reported as assets of operations held-for-sale on the Condensed Consolidated Balance Sheet.