Loans and Related Allowance for Credit Losses, Consumer Loan Categories by Delinquency Status and Vintage (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	$ 3,955	$ 5,358
Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	1,298	659
Government insured or guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	2,657	4,699
Total Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	62,395	101,969
Term loans by origination year, fiscal year before current fiscal year, finance receivable	89,654	55,214
Term loans by origination year, two years before current fiscal year, finance receivable	47,141	34,661
Term loans by origination year, three years before current fiscal year, finance receivable	27,331	11,714
Term loans by origination year, four years before current fiscal year, finance receivable	8,545	15,842
Term loans by origination year, more than five years before current fiscal year, finance receivable	73,600	77,309
Revolving loans, finance receivable	79,657	78,564
Revolving loans converted to term loans, finance receivable	7,613	7,001
Loans	395,936	382,274
Total Consumer [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	496	424
Total Consumer [Member] | 90 days or more past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,500	2,700
Residential mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	43,459	70,176
Term loans by origination year, fiscal year before current fiscal year, finance receivable	66,566	41,794
Term loans by origination year, two years before current fiscal year, finance receivable	37,996	25,234
Term loans by origination year, three years before current fiscal year, finance receivable	21,432	8,122
Term loans by origination year, four years before current fiscal year, finance receivable	6,579	14,245
Term loans by origination year, more than five years before current fiscal year, finance receivable	72,770	76,380
Revolving loans, finance receivable	12,033	16,305
Revolving loans converted to term loans, finance receivable	7,230	6,632
Loans	268,065	258,888
Residential mortgage - first lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	43,438	70,148
Term loans by origination year, fiscal year before current fiscal year, finance receivable	66,534	41,774
Term loans by origination year, two years before current fiscal year, finance receivable	37,979	25,203
Term loans by origination year, three years before current fiscal year, finance receivable	21,410	8,095
Term loans by origination year, four years before current fiscal year, finance receivable	6,559	14,223
Term loans by origination year, more than five years before current fiscal year, finance receivable	72,181	75,618
Revolving loans, finance receivable	3,872	5,313
Revolving loans converted to term loans, finance receivable	2,192	1,896
Loans	254,165	242,270
Residential mortgage - first lien [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	13	37
Residential mortgage - first lien [Member] | Government insured or guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	5	14
Term loans by origination year, fiscal year before current fiscal year, finance receivable	54	134
Term loans by origination year, two years before current fiscal year, finance receivable	135	209
Term loans by origination year, three years before current fiscal year, finance receivable	144	349
Term loans by origination year, four years before current fiscal year, finance receivable	203	364
Term loans by origination year, more than five years before current fiscal year, finance receivable	7,883	12,088
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	8,424	13,158
Residential mortgage - first lien [Member] | Current-29 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	43,335	69,994
Term loans by origination year, fiscal year before current fiscal year, finance receivable	66,404	41,527
Term loans by origination year, two years before current fiscal year, finance receivable	37,806	24,887
Term loans by origination year, three years before current fiscal year, finance receivable	21,208	7,660
Term loans by origination year, four years before current fiscal year, finance receivable	6,316	13,734
Term loans by origination year, more than five years before current fiscal year, finance receivable	63,103	61,576
Revolving loans, finance receivable	3,836	5,248
Revolving loans converted to term loans, finance receivable	1,989	1,673
Loans	243,997	226,299
Residential mortgage - first lien [Member] | 30-59 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	91	129
Term loans by origination year, fiscal year before current fiscal year, finance receivable	53	27
Term loans by origination year, two years before current fiscal year, finance receivable	19	30
Term loans by origination year, three years before current fiscal year, finance receivable	29	12
Term loans by origination year, four years before current fiscal year, finance receivable	12	24
Term loans by origination year, more than five years before current fiscal year, finance receivable	487	418
Revolving loans, finance receivable	13	14
Revolving loans converted to term loans, finance receivable	41	29
Loans	745	683
Residential mortgage - first lien [Member] | 60 to 89 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	6	10
Term loans by origination year, fiscal year before current fiscal year, finance receivable	9	7
Term loans by origination year, two years before current fiscal year, finance receivable	2	2
Term loans by origination year, three years before current fiscal year, finance receivable	5	0
Term loans by origination year, four years before current fiscal year, finance receivable	4	3
Term loans by origination year, more than five years before current fiscal year, finance receivable	134	126
Revolving loans, finance receivable	6	7
Revolving loans converted to term loans, finance receivable	18	15
Loans	184	170
Residential mortgage - first lien [Member] | 90-119 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	1	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	3	1
Term loans by origination year, two years before current fiscal year, finance receivable	0	1
Term loans by origination year, three years before current fiscal year, finance receivable	2	1
Term loans by origination year, four years before current fiscal year, finance receivable	3	5
Term loans by origination year, more than five years before current fiscal year, finance receivable	56	53
Revolving loans, finance receivable	3	4
Revolving loans converted to term loans, finance receivable	13	9
Loans	81	74
Residential mortgage - first lien [Member] | 120-179 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	1
Term loans by origination year, fiscal year before current fiscal year, finance receivable	6	16
Term loans by origination year, two years before current fiscal year, finance receivable	6	2
Term loans by origination year, three years before current fiscal year, finance receivable	5	2
Term loans by origination year, four years before current fiscal year, finance receivable	3	1
Term loans by origination year, more than five years before current fiscal year, finance receivable	86	63
Revolving loans, finance receivable	5	4
Revolving loans converted to term loans, finance receivable	15	14
Loans	126	103
Residential mortgage - first lien [Member] | 180 plus days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	5	62
Term loans by origination year, two years before current fiscal year, finance receivable	11	72
Term loans by origination year, three years before current fiscal year, finance receivable	17	71
Term loans by origination year, four years before current fiscal year, finance receivable	18	92
Term loans by origination year, more than five years before current fiscal year, finance receivable	432	1,294
Revolving loans, finance receivable	9	36
Revolving loans converted to term loans, finance receivable	116	156
Loans	608	1,783
Residential mortgage - first lien [Member] | 90 days or more past due [Member] | Government insured or guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,000	5,700
Residential mortgage - junior lien [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	21	28
Term loans by origination year, fiscal year before current fiscal year, finance receivable	32	20
Term loans by origination year, two years before current fiscal year, finance receivable	17	31
Term loans by origination year, three years before current fiscal year, finance receivable	22	27
Term loans by origination year, four years before current fiscal year, finance receivable	20	22
Term loans by origination year, more than five years before current fiscal year, finance receivable	589	762
Revolving loans, finance receivable	8,161	10,992
Revolving loans converted to term loans, finance receivable	5,038	4,736
Loans	13,900	16,618
Residential mortgage - junior lien [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	7	12
Residential mortgage - junior lien [Member] | Current-29 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	21	28
Term loans by origination year, fiscal year before current fiscal year, finance receivable	32	20
Term loans by origination year, two years before current fiscal year, finance receivable	17	30
Term loans by origination year, three years before current fiscal year, finance receivable	22	26
Term loans by origination year, four years before current fiscal year, finance receivable	20	21
Term loans by origination year, more than five years before current fiscal year, finance receivable	554	700
Revolving loans, finance receivable	8,109	10,883
Revolving loans converted to term loans, finance receivable	4,830	4,426
Loans	13,605	16,134
Residential mortgage - junior lien [Member] | 30-59 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	1
Term loans by origination year, more than five years before current fiscal year, finance receivable	10	10
Revolving loans, finance receivable	19	29
Revolving loans converted to term loans, finance receivable	46	46
Loans	75	86
Residential mortgage - junior lien [Member] | 60 to 89 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	3	4
Revolving loans, finance receivable	8	10
Revolving loans converted to term loans, finance receivable	24	21
Loans	35	35
Residential mortgage - junior lien [Member] | 90-119 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	1
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	2	3
Revolving loans, finance receivable	4	4
Revolving loans converted to term loans, finance receivable	15	12
Loans	21	20
Residential mortgage - junior lien [Member] | 120-179 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	4	5
Revolving loans, finance receivable	4	7
Revolving loans converted to term loans, finance receivable	20	14
Loans	28	26
Residential mortgage - junior lien [Member] | 180 plus days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	1
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	16	40
Revolving loans, finance receivable	17	59
Revolving loans converted to term loans, finance receivable	103	217
Loans	136	317
Credit card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	43,315	38,243
Revolving loans converted to term loans, finance receivable	243	210
Loans	43,558	38,453
Credit card [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	359	269
Credit card [Member] | Current-29 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	42,580	37,686
Revolving loans converted to term loans, finance receivable	208	192
Loans	42,788	37,878
Credit card [Member] | 30-59 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	232	176
Revolving loans converted to term loans, finance receivable	13	7
Loans	245	183
Credit card [Member] | 60 to 89 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	156	118
Revolving loans converted to term loans, finance receivable	10	5
Loans	166	123
Credit card [Member] | 90-119 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	133	98
Revolving loans converted to term loans, finance receivable	8	5
Loans	141	103
Credit card [Member] | 120-179 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	214	165
Revolving loans converted to term loans, finance receivable	4	1
Loans	218	166
Credit card [Member] | 180 plus days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	0	0
Auto [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	15,949	29,566
Term loans by origination year, fiscal year before current fiscal year, finance receivable	21,698	12,700
Term loans by origination year, two years before current fiscal year, finance receivable	8,732	8,717
Term loans by origination year, three years before current fiscal year, finance receivable	5,558	3,386
Term loans by origination year, four years before current fiscal year, finance receivable	1,879	1,490
Term loans by origination year, more than five years before current fiscal year, finance receivable	729	800
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	54,545	56,659
Auto [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	97	88
Auto [Member] | Current-29 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	15,792	29,246
Term loans by origination year, fiscal year before current fiscal year, finance receivable	21,136	12,412
Term loans by origination year, two years before current fiscal year, finance receivable	8,472	8,476
Term loans by origination year, three years before current fiscal year, finance receivable	5,382	3,271
Term loans by origination year, four years before current fiscal year, finance receivable	1,806	1,424
Term loans by origination year, more than five years before current fiscal year, finance receivable	670	714
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	53,258	55,543
Auto [Member] | 30-59 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	105	220
Term loans by origination year, fiscal year before current fiscal year, finance receivable	376	193
Term loans by origination year, two years before current fiscal year, finance receivable	180	165
Term loans by origination year, three years before current fiscal year, finance receivable	124	81
Term loans by origination year, four years before current fiscal year, finance receivable	53	46
Term loans by origination year, more than five years before current fiscal year, finance receivable	41	57
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	879	762
Auto [Member] | 60 to 89 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	37	69
Term loans by origination year, fiscal year before current fiscal year, finance receivable	133	67
Term loans by origination year, two years before current fiscal year, finance receivable	61	53
Term loans by origination year, three years before current fiscal year, finance receivable	39	25
Term loans by origination year, four years before current fiscal year, finance receivable	15	14
Term loans by origination year, more than five years before current fiscal year, finance receivable	14	21
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	299	249
Auto [Member] | 90-119 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	15	31
Term loans by origination year, fiscal year before current fiscal year, finance receivable	52	27
Term loans by origination year, two years before current fiscal year, finance receivable	19	22
Term loans by origination year, three years before current fiscal year, finance receivable	13	9
Term loans by origination year, four years before current fiscal year, finance receivable	5	6
Term loans by origination year, more than five years before current fiscal year, finance receivable	4	8
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	108	103
Auto [Member] | 120-179 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	1	1
Term loans by origination year, two years before current fiscal year, finance receivable	0	1
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	1	2
Auto [Member] | 180 plus days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	0	0
Revolving loans converted to term loans, finance receivable	0	0
Loans	0	0
Other consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	2,987	2,227
Term loans by origination year, fiscal year before current fiscal year, finance receivable	1,390	720
Term loans by origination year, two years before current fiscal year, finance receivable	413	710
Term loans by origination year, three years before current fiscal year, finance receivable	341	206
Term loans by origination year, four years before current fiscal year, finance receivable	87	107
Term loans by origination year, more than five years before current fiscal year, finance receivable	101	129
Revolving loans, finance receivable	24,309	24,016
Revolving loans converted to term loans, finance receivable	140	159
Loans	29,768	28,274
Other consumer [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]
Loans, 90 days or more past due and still accruing	20	18
Other consumer [Member] | Current-29 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	2,975	2,221
Term loans by origination year, fiscal year before current fiscal year, finance receivable	1,372	716
Term loans by origination year, two years before current fiscal year, finance receivable	409	703
Term loans by origination year, three years before current fiscal year, finance receivable	337	203
Term loans by origination year, four years before current fiscal year, finance receivable	86	107
Term loans by origination year, more than five years before current fiscal year, finance receivable	98	125
Revolving loans, finance receivable	24,284	23,988
Revolving loans converted to term loans, finance receivable	123	143
Loans	29,684	28,206
Other consumer [Member] | 30-59 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	7	3
Term loans by origination year, fiscal year before current fiscal year, finance receivable	8	2
Term loans by origination year, two years before current fiscal year, finance receivable	2	3
Term loans by origination year, three years before current fiscal year, finance receivable	2	1
Term loans by origination year, four years before current fiscal year, finance receivable	1	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	2	2
Revolving loans, finance receivable	9	10
Revolving loans converted to term loans, finance receivable	3	4
Loans	34	25
Other consumer [Member] | 60 to 89 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	3	2
Term loans by origination year, fiscal year before current fiscal year, finance receivable	5	1
Term loans by origination year, two years before current fiscal year, finance receivable	1	2
Term loans by origination year, three years before current fiscal year, finance receivable	1	1
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	1
Revolving loans, finance receivable	5	5
Revolving loans converted to term loans, finance receivable	2	1
Loans	17	13
Other consumer [Member] | 90-119 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	2	1
Term loans by origination year, fiscal year before current fiscal year, finance receivable	5	1
Term loans by origination year, two years before current fiscal year, finance receivable	1	2
Term loans by origination year, three years before current fiscal year, finance receivable	1	1
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	5	4
Revolving loans converted to term loans, finance receivable	2	0
Loans	16	9
Other consumer [Member] | 120-179 days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	0	0
Revolving loans, finance receivable	6	8
Revolving loans converted to term loans, finance receivable	2	2
Loans	8	10
Other consumer [Member] | 180 plus days past due [Member] | Not government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans by origination year, current fiscal year, finance receivable	0	0
Term loans by origination year, fiscal year before current fiscal year, finance receivable	0	0
Term loans by origination year, two years before current fiscal year, finance receivable	0	0
Term loans by origination year, three years before current fiscal year, finance receivable	0	0
Term loans by origination year, four years before current fiscal year, finance receivable	0	0
Term loans by origination year, more than five years before current fiscal year, finance receivable	1	1
Revolving loans, finance receivable	0	1
Revolving loans converted to term loans, finance receivable	8	9
Loans	$ 9	$ 11