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Financial Derivatives (Total Derivatives) (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Derivative [Line Items] |  |
Derivative, notional amount | $ 701,524 | $ 701,952
Derivative asset, fair value | 3,071 | 3,011
Derivative liability, fair value | 4,478 | 5,495
Derivative asset, fair value offset amount | 1,566 | 1,298
Derivative liability, fair value offset amount | 1,566 | 1,298
Less: Cash collateral received/paid, derivative asset fair value | 360 | 897
Less: Cash collateral received/paid, derivative liability fair value | 859 | 1,029
Derivative assets, Net Fair Value | 1,145 | 816
Derivative liabilities, Net Fair Value | 2,053 | 3,168
Commodity contracts: |  |
Derivative [Line Items] |  |
Derivative asset, fair value | 597 | 521
Derivative liability, fair value | 568 | 496
Less: Cash collateral received/paid, derivative asset fair value | 49 | 85
Less: Cash collateral received/paid, derivative liability fair value | 15 | 2
Derivative assets, Net Fair Value | 119 | 140
Derivative liabilities, Net Fair Value | 133 | 101
Foreign exchange contracts and other |  |
Derivative [Line Items] |  |
Derivative asset, fair value | 633 | 561
Derivative liability, fair value | 945 | 513
Less: Cash collateral received/paid, derivative asset fair value | 22 | 183
Less: Cash collateral received/paid, derivative liability fair value | 140 | 8
Derivative assets, Net Fair Value | 383 | 219
Derivative liabilities, Net Fair Value | 335 | 332
Designated as Hedging Instruments under GAAP |  |
Derivative [Line Items] |  |
Derivative, notional amount | 121,156 | 130,740
Derivative asset, fair value | 52 | 163
Derivative liability, fair value | 125 | 170
Designated as Hedging Instruments under GAAP | Fair value hedges | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 57,573 | 53,750
Derivative asset, fair value | 0 | 0
Derivative liability, fair value | 0 | 0
Designated as Hedging Instruments under GAAP | Cash flow hedges | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 57,399 | 50,721
Derivative asset, fair value | 7 | 0
Derivative liability, fair value | 0 | 2
Designated as Hedging Instruments under GAAP | Cash flow hedges | Other | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 5,000 | 25,000
Derivative asset, fair value | 45 | 149
Derivative liability, fair value | 15 | 168
Designated as Hedging Instruments under GAAP | Net investment hedges | Foreign Exchange Contract |  |
Derivative [Line Items] |  |
Derivative, notional amount | 1,184 | 1,269
Derivative asset, fair value | 0 | 14
Derivative liability, fair value | 110 | 0
Not Designated as Hedging Instrument under GAAP |  |
Derivative [Line Items] |  |
Derivative, notional amount | 580,368 | 571,212
Derivative asset, fair value | 3,019 | 2,848
Derivative liability, fair value | 4,353 | 5,325
Not Designated as Hedging Instrument under GAAP | Mortgage Banking | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 72,915 | 63,816
Derivative asset, fair value | 109 | 92
Derivative liability, fair value | 99 | 79
Not Designated as Hedging Instrument under GAAP | Mortgage Banking | Swaps | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 42,723 | 35,941
Derivative asset, fair value | 0 | 0
Derivative liability, fair value | 0 | 0
Not Designated as Hedging Instrument under GAAP | Mortgage Banking | Futures | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 8,430 | 9,962
Derivative asset, fair value | 0 | 0
Derivative liability, fair value | 0 | 0
Not Designated as Hedging Instrument under GAAP | Mortgage Banking | Mortgage-backed commitments | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 6,577 | 4,815
Derivative asset, fair value | 82 | 73
Derivative liability, fair value | 86 | 66
Not Designated as Hedging Instrument under GAAP | Mortgage Banking | Other | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 15,185 | 13,098
Derivative asset, fair value | 27 | 19
Derivative liability, fair value | 13 | 13
Not Designated as Hedging Instrument under GAAP | Customer Contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 488,196 | 496,365
Derivative asset, fair value | 2,900 | 2,612
Derivative liability, fair value | 3,978 | 5,097
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 432,712 | 442,415
Derivative asset, fair value | 1,680 | 1,688
Derivative liability, fair value | 2,851 | 4,237
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Commodity contracts: |  |
Derivative [Line Items] |  |
Derivative, notional amount | 14,635 | 15,221
Derivative asset, fair value | 597 | 521
Derivative liability, fair value | 568 | 496
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Foreign exchange contracts and other |  |
Derivative [Line Items] |  |
Derivative, notional amount | 40,849 | 38,729
Derivative asset, fair value | 623 | 403
Derivative liability, fair value | 559 | 364
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Swaps | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 394,216 | 406,747
Derivative asset, fair value | 1,541 | 1,544
Derivative liability, fair value | 2,712 | 4,130
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Swaps | Commodity contracts: |  |
Derivative [Line Items] |  |
Derivative, notional amount | 5,945 | 6,725
Derivative asset, fair value | 358 | 313
Derivative liability, fair value | 329 | 288
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Futures | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 50 | 113
Derivative asset, fair value | 0 | 0
Derivative liability, fair value | 0 | 0
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Mortgage-backed commitments | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 5,282 | 3,275
Derivative asset, fair value | 55 | 21
Derivative liability, fair value | 71 | 7
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Other | Interest rate contracts |  |
Derivative [Line Items] |  |
Derivative, notional amount | 33,164 | 32,280
Derivative asset, fair value | 84 | 123
Derivative liability, fair value | 68 | 100
Not Designated as Hedging Instrument under GAAP | Customer Contracts | Other | Commodity contracts: |  |
Derivative [Line Items] |  |
Derivative, notional amount | 8,690 | 8,496
Derivative asset, fair value | 239 | 208
Derivative liability, fair value | 239 | 208
Not Designated as Hedging Instrument under GAAP | Other Risk Management Activity | Foreign exchange contracts and other |  |
Derivative [Line Items] |  |
Derivative, notional amount | 19,257 | 11,031
Derivative asset, fair value | 10 | 144
Derivative liability, fair value | $ 276 | $ 149

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