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Derivative Instruments and Hedging Activities - Derivative Assets and Liabilities at Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | $ 227,801 | $ 213,069
Derivative assets, gross amount | 3,098 | 2,690
Derivative liabilities, gross amount | 4,550 | 1,868
Derivative asset, netting adjustments | (1,134) | (542)
Derivative liability, netting adjustments | (1,235) | $ (544)
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  | Other assets
Total derivative assets | 1,964 | $ 2,148
Total derivative liabilities | 3,315 | 1,324
Net valuation allowance on derivative assets and liabilities for non-performance risk | 4 | 11
Derivatives designated as accounting hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 98,966 | 111,618
Derivative assets, gross amount | 85 | 326
Derivative liabilities, gross amount | 820 | 39
Derivatives designated as accounting hedges | Interest rate contracts |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 91,306 | 102,059
Derivative assets, gross amount | 3 | 246
Derivative liabilities, gross amount | 504 | 19
Derivatives designated as accounting hedges | Interest rate contracts | Fair value hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 60,956 | 49,659
Derivative assets, gross amount | 3 | 2
Derivative liabilities, gross amount | 53 | 3
Derivatives designated as accounting hedges | Interest rate contracts | Cash flow hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 30,350 | 52,400
Derivative assets, gross amount | 0 | 244
Derivative liabilities, gross amount | 451 | 16
Derivatives designated as accounting hedges | Foreign exchange contracts |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 7,660 | 9,559
Derivative assets, gross amount | 82 | 80
Derivative liabilities, gross amount | 316 | 20
Derivatives designated as accounting hedges | Foreign exchange contracts | Fair value hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 1,338 | 1,421
Derivative assets, gross amount | 0 | 13
Derivative liabilities, gross amount | 211 | 0
Derivatives designated as accounting hedges | Foreign exchange contracts | Cash flow hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 2,175 | 4,679
Derivative assets, gross amount | 4 | 24
Derivative liabilities, gross amount | 14 | 20
Derivatives designated as accounting hedges | Foreign exchange contracts | Net investment hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 4,147 | 3,459
Derivative assets, gross amount | 78 | 43
Derivative liabilities, gross amount | 91 | 0
Derivatives not designated as accounting hedges |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 128,835 | 101,451
Derivative assets, gross amount | 3,013 | 2,364
Derivative liabilities, gross amount | 3,730 | 1,829
Derivatives not designated as accounting hedges | Customer accommodation |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 125,462 | 97,524
Derivative assets, gross amount | 2,970 | 2,329
Derivative liabilities, gross amount | 3,689 | 1,797
Derivatives not designated as accounting hedges | Interest rate contracts | Customer accommodation |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 91,601 | 71,724
Derivative assets, gross amount | 1,140 | 620
Derivative liabilities, gross amount | 1,873 | 194
Derivatives not designated as accounting hedges | Interest rate contracts | Other interest rate exposures |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 1,135 | 1,899
Derivative assets, gross amount | 34 | 33
Derivative liabilities, gross amount | 22 | 25
Derivatives not designated as accounting hedges | Foreign exchange contracts | Customer accommodation |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 4,926 | 3,779
Derivative assets, gross amount | 74 | 40
Derivative liabilities, gross amount | 78 | 42
Derivatives not designated as accounting hedges | Commodity contracts | Customer accommodation |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 28,935 | 22,021
Derivative assets, gross amount | 1,756 | 1,669
Derivative liabilities, gross amount | 1,738 | 1,561
Derivatives not designated as accounting hedges | Other contracts |  |
Derivatives, Fair Value [Line Items] |  |
Notional or contractual amount | 2,238 | 2,028
Derivative assets, gross amount | 9 | 2
Derivative liabilities, gross amount | $ 19 | $ 7

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