Parent And Guarantor Consolidating Financial Statements (Schedule Of Condensed Consolidating Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and Due from Banks	$ 1,342	$ 1,315
Interest-bearing Deposits in Banks and Other Financial Institutions	4,551	4,216
Total cash and cash equivalents	5,893	5,531	7,437	7,513
Investment securities	16,327	17,083
Loans held-for-sale, net	43	35
Finance receivables and loans, net	99,624	100,328	99,123
Loans to bank subsidiary	0	0
Loans to nonbank subsidiary	0	0
Allowance for loan losses	(1,192)	(1,208)	(1,197)	(1,170)
Total finance receivables and loans, net	98,432	99,120
Investment in operating leases, net	18,187	17,680
Receivables from bank subsidiary	0	0
Receivables from nonbank subsidiary	0	0
Investment in bank subsidiaries	0	0
Investment in nonbank subsidiaries	0	0
Premiums receivable and other insurance assets	1,639	1,613
Other Assets	7,390	9,589
Assets of operations held-for-sale	541	516
Total assets	148,452	151,167	166,199
Noninterest-bearing deposit liabilities	71	60
Interest-bearing deposit liabilities	55,296	53,290
Total deposit liabilities	55,367	53,350
Short-term borrowings	5,163	8,545
Long-term debt	68,295	69,465
Debt Payable To Nonbank Subsidiaries	0	0
Payables to Bank Subsidiaries	0	0
Payables to Nonbank Subsidiaries	0	0
Interest payable	893	888
Unearned insurance premiums and service revenue	2,312	2,314
Accrued expenses and other liabilities	1,963	2,397
Total liabilities	133,993	136,959
Total equity	14,459	14,208	20,474	19,898
Total liabilities and equity	148,452	151,167
Parent [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and Due from Banks	1,010	979
Interest-bearing Deposits in Banks and Other Financial Institutions	1,350	1,951
Total cash and cash equivalents	2,360	2,930	3,343	3,977
Investment securities	0	0
Loans held-for-sale, net	0	0
Finance receivables and loans, net	4,697	6,673
Loans to bank subsidiary	500	600
Loans to nonbank subsidiary	3,661	4,207
Allowance for loan losses	(110)	(131)
Total finance receivables and loans, net	8,748	11,349
Investment in operating leases, net	1,807	3,172
Receivables from bank subsidiary	448	236
Receivables from nonbank subsidiary	337	439
Investment in bank subsidiaries	15,228	14,916
Investment in nonbank subsidiaries	11,364	10,029
Premiums receivable and other insurance assets	0	0
Other Assets	4,390	4,691
Assets of operations held-for-sale	541	516
Total assets	45,223	48,278
Noninterest-bearing deposit liabilities	0	0
Interest-bearing deposit liabilities	421	440
Total deposit liabilities	421	440
Short-term borrowings	3,404	3,225
Long-term debt	22,533	25,819
Debt Payable To Nonbank Subsidiaries	2,419	2,334
Payables to Bank Subsidiaries	529	197
Payables to Nonbank Subsidiaries	554	666
Interest payable	654	709
Unearned insurance premiums and service revenue	0	0
Accrued expenses and other liabilities	250	680
Total liabilities	30,764	34,070
Total equity	14,459	14,208
Total liabilities and equity	45,223	48,278
Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and Due from Banks	26	37
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Total cash and cash equivalents	26	37	0	0
Investment securities	0	0
Loans held-for-sale, net	0	0
Finance receivables and loans, net	0	0
Loans to bank subsidiary	0	0
Loans to nonbank subsidiary	0	0
Allowance for loan losses	0	0
Total finance receivables and loans, net	0	0
Investment in operating leases, net	0	0
Receivables from bank subsidiary	0	0
Receivables from nonbank subsidiary	0	0
Investment in bank subsidiaries	15,228	14,916
Investment in nonbank subsidiaries	14	68
Premiums receivable and other insurance assets	0	0
Other Assets	0	0
Assets of operations held-for-sale	0	0
Total assets	15,268	15,021
Noninterest-bearing deposit liabilities	0	0
Interest-bearing deposit liabilities	0	0
Total deposit liabilities	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Debt Payable To Nonbank Subsidiaries	0	0
Payables to Bank Subsidiaries	0	0
Payables to Nonbank Subsidiaries	0	0
Interest payable	0	0
Unearned insurance premiums and service revenue	0	0
Accrued expenses and other liabilities	82	93
Total liabilities	82	93
Total equity	15,186	14,928
Total liabilities and equity	15,268	15,021
Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and Due from Banks	306	299
Interest-bearing Deposits in Banks and Other Financial Institutions	3,201	2,265
Total cash and cash equivalents	3,918	2,974	4,832	4,027
Investment securities	16,327	17,083
Loans held-for-sale, net	43	35
Finance receivables and loans, net	94,927	93,655
Loans to bank subsidiary	0	0
Loans to nonbank subsidiary	2,008	1,925
Allowance for loan losses	(1,082)	(1,077)
Total finance receivables and loans, net	95,853	94,503
Investment in operating leases, net	16,380	14,508
Receivables from bank subsidiary	0	0
Receivables from nonbank subsidiary	484	588
Investment in bank subsidiaries	0	0
Investment in nonbank subsidiaries	0	0
Premiums receivable and other insurance assets	1,660	1,634
Other Assets	5,016	6,880
Assets of operations held-for-sale	0	0
Total assets	139,681	138,205
Noninterest-bearing deposit liabilities	71	60
Interest-bearing deposit liabilities	54,875	52,850
Total deposit liabilities	54,946	52,910
Short-term borrowings	1,759	5,320
Long-term debt	45,762	43,646
Debt Payable To Nonbank Subsidiaries	4,161	4,808
Payables to Bank Subsidiaries	0	0
Payables to Nonbank Subsidiaries	207	421
Interest payable	239	179
Unearned insurance premiums and service revenue	2,312	2,314
Accrued expenses and other liabilities	3,647	3,606
Total liabilities	113,033	113,204
Total equity	26,648	25,001
Total liabilities and equity	139,681	138,205
Consolidation, Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and Due from Banks	0	0
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Total cash and cash equivalents	(411)	(410)	(738)	(491)
Investment securities	0	0
Loans held-for-sale, net	0	0
Finance receivables and loans, net	0	0
Loans to bank subsidiary	(500)	(600)
Loans to nonbank subsidiary	(5,669)	(6,132)
Allowance for loan losses	0	0
Total finance receivables and loans, net	(6,169)	(6,732)
Investment in operating leases, net	0	0
Receivables from bank subsidiary	(448)	(236)
Receivables from nonbank subsidiary	(821)	(1,027)
Investment in bank subsidiaries	(30,456)	(29,832)
Investment in nonbank subsidiaries	(11,378)	(10,097)
Premiums receivable and other insurance assets	(21)	(21)
Other Assets	(2,016)	(1,982)
Assets of operations held-for-sale	0	0
Total assets	(51,720)	(50,337)
Noninterest-bearing deposit liabilities	0	0
Interest-bearing deposit liabilities	0	0
Total deposit liabilities	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Debt Payable To Nonbank Subsidiaries	(6,580)	(7,142)
Payables to Bank Subsidiaries	(529)	(197)
Payables to Nonbank Subsidiaries	(761)	(1,087)
Interest payable	0	0
Unearned insurance premiums and service revenue	0	0
Accrued expenses and other liabilities	(2,016)	(1,982)
Total liabilities	(9,886)	(10,408)
Total equity	(41,834)	(39,929)
Total liabilities and equity	(51,720)	(50,337)
Intercompany [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Intercompany [Member] | Parent [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Intercompany [Member] | Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Intercompany [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions	411	410
Intercompany [Member] | Consolidation, Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions	(411)	(410)
Fair Value Option Election, Fair Value [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Finance receivables and loans, net	$ 99,624	$ 100,328