Loans and Allowance for Credit Losses - Amortized Cost Basis (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
2022	$ 9,394	$ 8,336
2021	4,901	794
2020	529	2,012
2019	1,705	1,457
2018	1,200	810
Prior	745	263
Revolving Loans	17,639	18,852
Loans, gross, excluding loans classified as held-for-sale	36,113	32,524
Financing receivable, accrued interest, before allowance for credit loss	137	86
Financing receivable, held-for-sale		8
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	30,064	27,196
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	5,513	4,984
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	406	180
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	130	164
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	33,192	29,970
Commercial and Financial \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	27,617	24,974
Commercial and Financial \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	5,128	4,714
Commercial and Financial \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	317	118
Commercial and Financial \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	130	164
Commercial and Financial \| Geographic Distribution, Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,076	3,084
2021	1,074	415
2020	269	1,194
2019	957	512
2018	349	414
Prior	183	7
Revolving Loans	13,452	13,934
Loans, gross, excluding loans classified as held-for-sale	19,360	19,560
Commercial and Financial \| Geographic Distribution, Domestic \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2022	2,818	1,988
2021	184	59
2020	88	347
2019	328	2
2018	0	37
Prior	10	0
Revolving Loans	13,165	13,591
Loans, gross, excluding loans classified as held-for-sale	16,593	16,024
Commercial and Financial \| Geographic Distribution, Domestic \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2022	251	1,096
2021	797	351
2020	176	706
2019	433	425
2018	289	350
Prior	147	7
Revolving Loans	287	343
Loans, gross, excluding loans classified as held-for-sale	2,380	3,278
Commercial and Financial \| Geographic Distribution, Domestic \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0	0
2021	93	0
2020	0	70
2019	155	29
2018	29	19
Prior	19	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	296	118
Commercial and Financial \| Geographic Distribution, Domestic \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2022	7	0
2021	0	5
2020	5	71
2019	41	56
2018	31	8
Prior	7	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	91	140
Commercial and Financial \| Non-U.S.
Financing Receivable, Credit Quality Indicator [Line Items]
2022	5,953	4,648
2021	3,215	201
2020	111	264
2019	171	228
2018	134	120
Prior	61	31
Revolving Loans	4,187	4,918
Loans, gross, excluding loans classified as held-for-sale	13,832	10,410
Commercial and Financial \| Non-U.S. \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2022	4,661	4,087
2021	2,729	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
Revolving Loans	3,634	4,863
Loans, gross, excluding loans classified as held-for-sale	11,024	8,950
Commercial and Financial \| Non-U.S. \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
2022	1,291	561
2021	486	201
2020	95	264
2019	166	204
2018	96	120
Prior	61	31
Revolving Loans	553	55
Loans, gross, excluding loans classified as held-for-sale	2,748	1,436
Commercial and Financial \| Non-U.S. \| Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
2022	0
2021	0
2020	16
2019	5
2018	0
Prior	0
Revolving Loans	0
Loans, gross, excluding loans classified as held-for-sale	21
Commercial and Financial \| Non-U.S. \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2022	1	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	39	24
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,921	2,554
Commercial real estate \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,447	2,222
Commercial real estate \| Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	385	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	365	604
2021	612	178
2020	149	554
2019	577	717
2018	717	276
Prior	501	225
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,921	2,554
Commercial real estate \| Geographic Distribution, Domestic \| Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
2022	365	580
2021	612	129
2020	100	383
2019	331	657
2018	566	276
Prior	473	197
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,447	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	197	20
2018	111	0
Prior	28	28
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	385	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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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

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