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Derivatives and Hedging Activities - Effect of Fair Value and Cash Flow Hedges on Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest expense — Long-term debt | $ (734) | $ (1,187) | $ (1,305)
Interest income — Loans | 5,749 | 6,026 | 6,219
Interest Income - securities | 1,599 | 1,142 | 793
Investment banking and debt placement fees | 780 | 688 | 542
Investment banking and debt placement fees | Fair Value Hedging |  |  |
Net gains (losses) on fair value hedging relationships |  |  |
Net income (expense) recognized on fair value hedges |  | 0 |
Investment banking and debt placement fees | Cash Flow Hedging |  |  |
Net gain (loss) on cash flow hedging relationships |  |  |
Net income (expense) recognized on cash flow hedges | 0 |  |
Interest rate | Interest expense – long-term debt | Fair Value Hedging |  |  |
Net gains (losses) on fair value hedging relationships |  |  |
Recognized on hedged items | (296) | 56 | (119)
Recognized on derivatives designated as hedging instruments | 126 | (332) | (135)
Net income (expense) recognized on fair value hedges | (170) | (276) | (254)
Interest rate | Interest expense – long-term debt | Cash Flow Hedging |  |  |
Net gain (loss) on cash flow hedging relationships |  |  |
Realized gains (losses) (pre-tax) reclassified from AOCI into net income | (2) | (2) | (2)
Net income (expense) recognized on cash flow hedges | (2) | (2) | (2)
Interest rate | Interest income – loans | Fair Value Hedging |  |  |
Net gains (losses) on fair value hedging relationships |  |  |
Recognized on hedged items | 0 | 0 | 0
Recognized on derivatives designated as hedging instruments | 0 | 0 | 0
Net income (expense) recognized on fair value hedges | 0 | 0 | 0
Interest rate | Interest income – loans | Cash Flow Hedging |  |  |
Net gain (loss) on cash flow hedging relationships |  |  |
Realized gains (losses) (pre-tax) reclassified from AOCI into net income | (358) | (733) | (956)
Net income (expense) recognized on cash flow hedges | (358) | (733) | (956)
Interest rate | Interest Income - securities | Fair Value Hedging |  |  |
Net gains (losses) on fair value hedging relationships |  |  |
Recognized on hedged items | 105 | (111) | 181
Recognized on derivatives designated as hedging instruments | (86) | 239 | (132)
Net income (expense) recognized on fair value hedges | 19 | 128 | 49
Interest rate | Interest Income - securities | Cash Flow Hedging |  |  |
Net gain (loss) on cash flow hedging relationships |  |  |
Realized gains (losses) (pre-tax) reclassified from AOCI into net income | 0 | 0 | 0
Net income (expense) recognized on cash flow hedges | 0 | 0 | 0
Interest rate | Investment banking and debt placement fees | Fair Value Hedging |  |  |
Net gains (losses) on fair value hedging relationships |  |  |
Recognized on hedged items | 0 | 0 | 0
Recognized on derivatives designated as hedging instruments | 0 | 0 | 0
Net income (expense) recognized on fair value hedges | 0 |  | 0
Interest rate | Investment banking and debt placement fees | Cash Flow Hedging |  |  |
Net gain (loss) on cash flow hedging relationships |  |  |
Realized gains (losses) (pre-tax) reclassified from AOCI into net income | $ 0 | 0 | 5
Net income (expense) recognized on cash flow hedges |  | $ 0 | $ 5

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