Loans and Allowance for Credit Losses - Amortized Cost Basis (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
2022	$ 6,417	$ 8,336
2021	4,981	794
2020	563	2,012
2019	1,743	1,457
2018	1,238	810
Prior	761	263
Revolving Loans	17,707	18,852
Loans, gross, excluding loans classified as held-for-sale	33,410	32,524
Financing receivable, accrued interest, before allowance for credit loss	91	86
Financing receivable, held-for-sale	155	8
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	28,922	27,196
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	4,071	4,984
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	251	180
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	166	164
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	30,728	29,970
Commercial and Financial \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	26,549	24,974
Commercial and Financial \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	3,851	4,714
Commercial and Financial \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	162	118
Commercial and Financial \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	166	164
Commercial and Financial \| Geographic Distribution, Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
2022	2,428	3,084
2021	1,073	415
2020	292	1,194
2019	993	512
2018	385	414
Prior	195	7
Revolving Loans	13,560	13,934
Loans, gross, excluding loans classified as held-for-sale	18,926	19,560
Commercial and Financial \| Geographic Distribution, Domestic \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2022	2,297	1,988
2021	185	59
2020	95	347
2019	341	2
2018	0	37
Prior	12	0
Revolving Loans	13,197	13,591
Loans, gross, excluding loans classified as held-for-sale	16,127	16,024
Commercial and Financial \| Geographic Distribution, Domestic \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2022	129	1,096
2021	849	351
2020	192	706
2019	486	425
2018	340	350
Prior	150	7
Revolving Loans	363	343
Loans, gross, excluding loans classified as held-for-sale	2,509	3,278
Commercial and Financial \| Geographic Distribution, Domestic \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0	0
2021	39	0
2020	0	70
2019	96	29
2018	0	19
Prior	27	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	162	118
Commercial and Financial \| Geographic Distribution, Domestic \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2022	2	0
2021	0	5
2020	5	71
2019	70	56
2018	45	8
Prior	6	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	128	140
Commercial and Financial \| Non-U.S.
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,855	4,648
2021	3,296	201
2020	122	264
2019	180	228
2018	137	120
Prior	65	31
Revolving Loans	4,147	4,918
Loans, gross, excluding loans classified as held-for-sale	11,802	10,410
Commercial and Financial \| Non-U.S. \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,505	4,087
2021	2,783	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving Loans	4,134	4,863
Loans, gross, excluding loans classified as held-for-sale	10,422	8,950
Commercial and Financial \| Non-U.S. \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2022	350	561
2021	513	201
2020	122	264
2019	180	204
2018	99	120
Prior	65	31
Revolving Loans	13	55
Loans, gross, excluding loans classified as held-for-sale	1,342	1,436
Commercial and Financial \| Non-U.S. \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0
2021	0
2020	0
2019	0
2018	0
Prior	0
Revolving Loans	0
Loans, gross, excluding loans classified as held-for-sale	0
Commercial and Financial \| Non-U.S. \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0	0
2021	0	0
2020	0	0
2019	0	24
2018	38	0
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	38	24
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,682	2,554
Commercial real estate \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,373	2,222
Commercial real estate \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	220	270
Commercial real estate \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	89	62
Commercial real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	0	0
Commercial real estate \| Geographic Distribution, Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
2022	134	604
2021	612	178
2020	149	554
2019	570	717
2018	716	276
Prior	501	225
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,682	2,554
Commercial real estate \| Geographic Distribution, Domestic \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2022	134	580
2021	612	129
2020	100	383
2019	397	657
2018	657	276
Prior	473	197
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,373	2,222
Commercial real estate \| Geographic Distribution, Domestic \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0	24
2021	0	49
2020	49	149
2019	124	20
2018	19	0
Prior	28	28
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	220	270
Commercial real estate \| Geographic Distribution, Domestic \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0	0
2021	0	0
2020	0	22
2019	49	40
2018	40	0
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	$ 89	$ 62

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

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- Definition

Amount, before allowance for credit loss, of accrued interest on financing receivable.

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- Definition

Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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-Publisher FASB
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- Definition

Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn.

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Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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Amount, before valuation allowance, of financing receivable classified as held-for-sale.

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