Loans and Allowance for Credit Losses - Amortized Cost Basis (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 8,336	$ 3,935
2020	794	2,313
2019	2,012	1,918
2018	1,457	1,272
2017	810	495
Prior	263	95
Revolving Loans	18,852	17,897
Loans, gross, excluding loans classified as held-for-sale	32,524
Loans, gross	32,532	27,925
Interest income	86	72
Financing receivable, held-for-sale	8
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	27,196
Loans, gross		22,583
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	4,984
Loans, gross		5,224
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	180
Loans, gross		67
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	164
Loans, gross		34
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross		17
Geographic Distribution, Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross	22,114	21,132
Non-U.S.
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross	10,418	6,793
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	29,970
Loans, gross		25,829
Commercial and Financial \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	24,974
Loans, gross		20,859
Commercial and Financial \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	4,714
Loans, gross		4,852
Commercial and Financial \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	118
Loans, gross		67
Commercial and Financial \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	164
Loans, gross		34
Commercial and Financial \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross		17
Commercial and Financial \| Geographic Distribution, Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
2021	3,084	2,326
2020	415	1,363
2019	1,194	826
2018	512	816
2017	414	272
Prior	7	0
Revolving Loans	13,934	13,433
Loans, gross, excluding loans classified as held-for-sale	19,560
Loans, gross		19,036
Commercial and Financial \| Geographic Distribution, Domestic \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,988	1,894
2020	59	388
2019	347	4
2018	2	167
2017	37	200
Prior	0	0
Revolving Loans	13,591	12,836
Loans, gross, excluding loans classified as held-for-sale	16,024
Loans, gross		15,489
Commercial and Financial \| Geographic Distribution, Domestic \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,096	432
2020	351	942
2019	706	822
2018	425	610
2017	350	43
Prior	7	0
Revolving Loans	343	597
Loans, gross, excluding loans classified as held-for-sale	3,278
Loans, gross		3,446
Commercial and Financial \| Geographic Distribution, Domestic \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	28
2019	70	0
2018	29	39
2017	19	0
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	118
Loans, gross		67
Commercial and Financial \| Geographic Distribution, Domestic \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	5	5
2019	71	0
2018	56	0
2017	8	29
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	140
Loans, gross		34
Commercial and Financial \| Non-U.S.
Financing Receivable, Credit Quality Indicator [Line Items]
2021	4,648	1,311
2020	201	401
2019	264	346
2018	228	179
2017	120	26
Prior	31	66
Revolving Loans	4,918	4,464
Loans, gross, excluding loans classified as held-for-sale	10,410
Loans, gross		6,793
Commercial and Financial \| Non-U.S. \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2021	4,087	1,028
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	4,863	4,343
Loans, gross, excluding loans classified as held-for-sale	8,950
Loans, gross		5,371
Commercial and Financial \| Non-U.S. \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2021	561	283
2020	201	401
2019	264	346
2018	204	162
2017	120	26
Prior	31	66
Revolving Loans	55	121
Loans, gross, excluding loans classified as held-for-sale	1,436
Loans, gross		1,405
Commercial and Financial \| Non-U.S. \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020
2019
2018	24
2017
Prior
Revolving Loans
Loans, gross, excluding loans classified as held-for-sale	24
Commercial and Financial \| Non-U.S. \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021		0
2020		0
2019		0
2018		17
2017		0
Prior		0
Revolving Loans		0
Loans, gross		17
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,554
Loans, gross		2,096
Commercial real estate \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,222
Loans, gross		1,724
Commercial real estate \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	270
Loans, gross		372
Commercial real estate \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	62
Loans, gross		0
Commercial real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	0
Loans, gross		0
Commercial real estate \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross		0
Commercial real estate \| Geographic Distribution, Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
2021	604	298
2020	178	549
2019	554	746
2018	717	277
2017	276	197
Prior	225	29
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,554
Loans, gross	2,554	2,096
Commercial real estate \| Geographic Distribution, Domestic \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2021	580	178
2020	129	383
2019	383	688
2018	657	277
2017	276	197
Prior	197	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,222
Loans, gross		1,723
Commercial real estate \| Geographic Distribution, Domestic \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2021	24	120
2020	49	166
2019	149	58
2018	20	0
2017	0	0
Prior	28	29
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	270
Loans, gross		$ 373
Commercial real estate \| Geographic Distribution, Domestic \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	22
2018	40
2017	0
Prior	0
Revolving Loans	0
Loans, gross, excluding loans classified as held-for-sale	$ 62

Financing Receivable, Before Allowance For Credit Loss, Excluding Held For Sale Receivables

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- Definition

Financing Receivable, Originated More Than Five Years before Latest Fiscal Year

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Amount of financing receivable originated four years prior to current fiscal year.

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Amount of financing receivable originated in fiscal year prior to current fiscal year.

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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