Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets [Abstract]
Cash and Due from Banks	$ 1,063	$ 1,073
Interest-bearing Deposits in Banks and Other Financial Institutions	5,486	6,440
Total cash and cash equivalents	6,549	7,513
Investment securities	17,967	14,178
Loans held-for-sale, net	82	2,576
Finance receivables and loans, net [Abstract]
Finance receivables and loans, net	95,281	99,055
Allowance for loan losses	(1,198)	(1,170)
Total finance receivables and loans, net	94,083	97,885
Investment in operating leases, net	17,254	13,550
Mortgage servicing rights	0	952
Premiums receivable and other insurance assets	1,649	1,609
Other Assets	7,059	11,908
Assets of operations held-for-sale	5,913	32,176
Total assets	150,556	182,347
Liabilities and Equity [Abstract]
Noninterest-bearing deposit liabilities	66	1,977
Interest-bearing deposit liabilities	51,965	45,938
Total deposit liabilities	52,031	47,915
Short-term borrowings	6,015	7,461
Long-term debt	60,701	74,561
Interest payable	978	932
Unearned insurance premiums and service revenue	2,332	2,296
Accrued expenses and other liabilities	4,836	6,585
Liabilities of operations held-for-sale	4,602	22,699
Total liabilities	131,495	162,449
Equity [Abstract]
Common stock and paid-in-capital	19,669	19,668
Mandatorily convertible preferred stock held by U.S. Department of Treasury	5,685	5,685
Preferred stock	1,255	1,255
Retained Earnings (Accumulated Deficit)	(7,365)	(7,021)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(183)	311
Stockholders' Equity Attributable to Parent	19,061	19,898
Total liabilities and equity	150,556	182,347
Variable Interest Entity, Primary Beneficiary [Member]
Finance receivables and loans, net [Abstract]
Finance receivables and loans, net	28,308	31,510
Allowance for loan losses	(152)	(144)
Total finance receivables and loans, net	28,156	31,366
Investment in operating leases, net	5,316	6,060
Other Assets	1,492	2,868
Assets of operations held-for-sale	149	12,139
Total assets	35,113	52,433
Liabilities and Equity [Abstract]
Short-term borrowings	500	400
Long-term debt	24,169	26,461
Interest payable	1	1
Accrued expenses and other liabilities	12	16
Liabilities of operations held-for-sale	149	9,686
Total liabilities	$ 24,831	$ 36,564