Loans and Related Allowance for Credit Losses, Loans by Delinquency Status, Consumer (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		$ 7,023	$ 7,285
By delinquency status:
Total	[1]	1,009,843	962,265
Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		881	933
Government insured or guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		6,142	6,352
Purchase credit deteriorated [Member]
By delinquency status:
Total			568
Total Consumer [Member]
By delinquency status:
Term loans by origination year, 2020		21,555
Term loans by origination year, 2019		82,693
Term loans by origination year, 2018		36,793
Term loans by origination year, 2017		43,712
Term loans by origination year, 2016		48,161
Term loans by origination year, Prior		115,472
Revolving loans		83,479
Revolving loans converted to term loans		10,243
Total		442,108	446,546
Total Consumer [Member] | Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		828	855
Total Consumer [Member] | Non-government insured/guaranteed [Member] | 90 days past due [Member]
By delinquency status:
Total		2,000	1,900
Total Consumer [Member] | Government insured or guaranteed [Member] | 90 days past due [Member]
By delinquency status:
Total		6,100	6,400
Total Consumer [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			445,978
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Total			429,158
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Total			2,685
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Total			1,084
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Total			619
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Total			593
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Total			669
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			11,170
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Total			171
Total Consumer [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Total			10,999
Total Consumer [Member] | Purchase credit deteriorated [Member]
By delinquency status:
Total			$ 568
Total Consumer [Member] | Purchase credit deteriorated [Member] | Financing receivables equal to greater than 30 days past due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal balance, percent past due			26.00%
Total Consumer [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			$ 568
Residential mortgage [Member]
By delinquency status:
Term loans by origination year, 2020		14,264
Term loans by origination year, 2019		59,188
Term loans by origination year, 2018		25,292
Term loans by origination year, 2017		36,560
Term loans by origination year, 2016		41,750
Term loans by origination year, Prior		107,298
Revolving loans		27,391
Revolving loans converted to term loans		9,704
Total		321,447	323,356
Residential mortgage [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			322,788
Residential mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			11,170
Residential mortgage [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			568
Real estate 1-4 family first mortgage [Member]
By delinquency status:
Term loans by origination year, 2020		14,256
Term loans by origination year, 2019		59,144
Term loans by origination year, 2018		25,241
Term loans by origination year, 2017		36,511
Term loans by origination year, 2016		41,709
Term loans by origination year, Prior		105,728
Revolving loans		8,063
Revolving loans converted to term loans		2,268
Total		292,920	293,847
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		128	112
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		14,238
Term loans by origination year, 2019		59,044
Term loans by origination year, 2018		25,047
Term loans by origination year, 2017		36,185
Term loans by origination year, 2016		41,121
Term loans by origination year, Prior		93,490
Revolving loans		7,981
Revolving loans converted to term loans		2,020
Total		279,126
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		14
Term loans by origination year, 2019		65
Term loans by origination year, 2018		30
Term loans by origination year, 2017		39
Term loans by origination year, 2016		64
Term loans by origination year, Prior		1,184
Revolving loans		38
Revolving loans converted to term loans		57
Total		1,491
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		2
Term loans by origination year, 2019		3
Term loans by origination year, 2018		6
Term loans by origination year, 2017		5
Term loans by origination year, 2016		8
Term loans by origination year, Prior		370
Revolving loans		20
Revolving loans converted to term loans		27
Total		441
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		3
Term loans by origination year, 2017		0
Term loans by origination year, 2016		6
Term loans by origination year, Prior		190
Revolving loans		8
Revolving loans converted to term loans		17
Total		224
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		1
Term loans by origination year, 2017		4
Term loans by origination year, 2016		7
Term loans by origination year, Prior		142
Revolving loans		11
Revolving loans converted to term loans		22
Total		187
Real estate 1-4 family first mortgage [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		4
Term loans by origination year, 2017		7
Term loans by origination year, 2016		5
Term loans by origination year, Prior		466
Revolving loans		5
Revolving loans converted to term loans		125
Total		612
Real estate 1-4 family first mortgage [Member] | Government insured or guaranteed [Member]
By delinquency status:
Term loans by origination year, 2020		1
Term loans by origination year, 2019		32
Term loans by origination year, 2018		150
Term loans by origination year, 2017		271
Term loans by origination year, 2016		498
Term loans by origination year, Prior		9,887
Revolving loans		0
Revolving loans converted to term loans		0
Total		10,839
Real estate 1-4 family first mortgage [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		160
Revolving loans		0
Revolving loans converted to term loans		0
Total		160
Real estate 1-4 family first mortgage [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Term loans by origination year, 2020		2
Term loans by origination year, 2019		32
Term loans by origination year, 2018		150
Term loans by origination year, 2017		271
Term loans by origination year, 2016		498
Term loans by origination year, Prior		9,726
Revolving loans		0
Revolving loans converted to term loans		0
Total		10,679
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			293,292
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Total			279,722
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Total			1,136
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Total			404
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Total			197
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Total			160
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Total			503
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			11,170
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Total			171
Real estate 1-4 family first mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Total			10,999
Real estate 1-4 family first mortgage [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			555
Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Term loans by origination year, 2020		8
Term loans by origination year, 2019		44
Term loans by origination year, 2018		51
Term loans by origination year, 2017		49
Term loans by origination year, 2016		41
Term loans by origination year, Prior		1,570
Revolving loans		19,328
Revolving loans converted to term loans		7,436
Total		28,527	29,509
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		25	32
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		8
Term loans by origination year, 2019		44
Term loans by origination year, 2018		51
Term loans by origination year, 2017		48
Term loans by origination year, 2016		39
Term loans by origination year, Prior		1,491
Revolving loans		19,178
Revolving loans converted to term loans		7,058
Total		27,917
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		34
Revolving loans		76
Revolving loans converted to term loans		119
Total		229
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		1
Term loans by origination year, 2016		1
Term loans by origination year, Prior		15
Revolving loans		28
Revolving loans converted to term loans		58
Total		103
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		8
Revolving loans		19
Revolving loans converted to term loans		32
Total		59
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		6
Revolving loans		17
Revolving loans converted to term loans		44
Total		67
Real estate 1-4 family junior lien mortgage [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		1
Term loans by origination year, Prior		16
Revolving loans		10
Revolving loans converted to term loans		125
Total		152
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			29,496
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Total			28,870
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Total			216
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Total			115
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Total			69
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Total			71
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Total			155
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			0
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Total			0
Real estate 1-4 family junior lien mortgage [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Total			0
Real estate 1-4 family junior lien mortgage [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			13
Credit card [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		38,268
Revolving loans converted to term loans		314
Total		38,582	41,013
Credit card [Member] | Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		528	546
Credit card [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		37,320
Revolving loans converted to term loans		259
Total		37,579
Credit card [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		260
Revolving loans converted to term loans		18
Total		278
Credit card [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		184
Revolving loans converted to term loans		13
Total		197
Credit card [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		167
Revolving loans converted to term loans		14
Total		181
Credit card [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		335
Revolving loans converted to term loans		10
Total		345
Credit card [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		2
Revolving loans converted to term loans		0
Total		2
Credit card [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			41,013
Credit card [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Total			39,935
Credit card [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Total			311
Credit card [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Total			221
Credit card [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Total			202
Credit card [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Total			343
Credit card [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Total			1
Credit card [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			0
Credit card [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Total			0
Credit card [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Total			0
Credit card [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			0
Automobile [Member]
By delinquency status:
Term loans by origination year, 2020		6,342
Term loans by origination year, 2019		19,907
Term loans by origination year, 2018		9,272
Term loans by origination year, 2017		5,661
Term loans by origination year, 2016		5,093
Term loans by origination year, Prior		2,293
Revolving loans		0
Revolving loans converted to term loans		0
Total		48,568	47,873
Automobile [Member] | Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		69	78
Automobile [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		6,334
Term loans by origination year, 2019		19,682
Term loans by origination year, 2018		9,085
Term loans by origination year, 2017		5,509
Term loans by origination year, 2016		4,857
Term loans by origination year, Prior		2,145
Revolving loans		0
Revolving loans converted to term loans		0
Total		47,612
Automobile [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		8
Term loans by origination year, 2019		158
Term loans by origination year, 2018		134
Term loans by origination year, 2017		111
Term loans by origination year, 2016		168
Term loans by origination year, Prior		104
Revolving loans		0
Revolving loans converted to term loans		0
Total		683
Automobile [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		49
Term loans by origination year, 2018		40
Term loans by origination year, 2017		32
Term loans by origination year, 2016		53
Term loans by origination year, Prior		34
Revolving loans		0
Revolving loans converted to term loans		0
Total		208
Automobile [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		18
Term loans by origination year, 2018		13
Term loans by origination year, 2017		9
Term loans by origination year, 2016		15
Term loans by origination year, Prior		10
Revolving loans		0
Revolving loans converted to term loans		0
Total		65
Automobile [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		0
Revolving loans converted to term loans		0
Total		0
Automobile [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		0
Revolving loans converted to term loans		0
Total		0
Automobile [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			47,873
Automobile [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Total			46,650
Automobile [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Total			882
Automobile [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Total			263
Automobile [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Total			77
Automobile [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Total			1
Automobile [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Total			0
Automobile [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			0
Automobile [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Total			0
Automobile [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Total			0
Automobile [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			0
Other revolving credit and installment [Member]
By delinquency status:
Term loans by origination year, 2020		949
Term loans by origination year, 2019		3,598
Term loans by origination year, 2018		2,229
Term loans by origination year, 2017		1,491
Term loans by origination year, 2016		1,318
Term loans by origination year, Prior		5,881
Revolving loans		17,820
Revolving loans converted to term loans		225
Total		33,511	34,304
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
90 days or more past due and still accruing		78	87
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		948
Term loans by origination year, 2019		3,580
Term loans by origination year, 2018		2,207
Term loans by origination year, 2017		1,468
Term loans by origination year, 2016		1,298
Term loans by origination year, Prior		5,751
Revolving loans		17,766
Revolving loans converted to term loans		202
Total		33,220
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		1
Term loans by origination year, 2019		9
Term loans by origination year, 2018		10
Term loans by origination year, 2017		12
Term loans by origination year, 2016		9
Term loans by origination year, Prior		66
Revolving loans		19
Revolving loans converted to term loans		7
Total		133
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		5
Term loans by origination year, 2018		6
Term loans by origination year, 2017		5
Term loans by origination year, 2016		5
Term loans by origination year, Prior		32
Revolving loans		9
Revolving loans converted to term loans		4
Total		66
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		4
Term loans by origination year, 2018		6
Term loans by origination year, 2017		6
Term loans by origination year, 2016		6
Term loans by origination year, Prior		31
Revolving loans		9
Revolving loans converted to term loans		3
Total		65
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		0
Revolving loans		15
Revolving loans converted to term loans		2
Total		17
Other revolving credit and installment [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Term loans by origination year, 2020		0
Term loans by origination year, 2019		0
Term loans by origination year, 2018		0
Term loans by origination year, 2017		0
Term loans by origination year, 2016		0
Term loans by origination year, Prior		1
Revolving loans		2
Revolving loans converted to term loans		7
Total		$ 10
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member]
By delinquency status:
Total			34,304
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | Current-29 days past due [Member]
By delinquency status:
Total			33,981
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 30-59 days past due [Member]
By delinquency status:
Total			140
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 60 to 89 days past due [Member]
By delinquency status:
Total			81
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 90-119 days past due [Member]
By delinquency status:
Total			74
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 120-179 days past due member [Member]
By delinquency status:
Total			18
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Non-government insured/guaranteed [Member] | 180 plus days past due [Member]
By delinquency status:
Total			10
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member]
By delinquency status:
Total			0
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Loans held at fair value [Member]
By delinquency status:
Total			0
Other revolving credit and installment [Member] | Not purchased credit deteriorated [Member] | Government insured or guaranteed [Member] | Portion at other than fair value measurement [Member]
By delinquency status:
Total			0
Other revolving credit and installment [Member] | Purchase credit deteriorated [Member] | Non-government insured/guaranteed [Member]
By delinquency status:
Total			$ 0

[1] (2) Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.