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v3.25.3

Fair Values of Assets and Liabilities - Changes in Fair Value for Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |
Beginning of Period Balance |  | $ (107) | $ (2,303) | $ (1,800) | $ (1,885) |
Net Gains (Losses) Included in Net Income |  | (403) | 651 | (584) | (2,036) |
Purchases |  | 193 | 264 | 914 | 912 |
Sales |  | (2) | (9) | (4) | (14) |
Issuances |  | 0 | 0 | 1 | 0 |
Settlements |  | 389 | 585 | 1,543 | 2,211 |
End of Period Balance |  | 70 | (812) | 70 | (812) |
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period |  | 152 | 1,438 | 1,351 | 666 |
Available-for-sale securities | [1] | 89,065 |  | 89,065 |  | $ 85,992
Mortgage servicing rights |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning of Period Balance |  | 3,305 | 3,326 | 3,369 | 3,377 |
Net Gains (Losses) Included in Net Income |  | (88) | (212) | (276) | (194) |
Purchases |  | 0 | 0 | 0 | 1 |
Sales |  | 1 | 1 | 2 | (188) |
Issuances |  | 71 | 72 | 194 | 191 |
Settlements |  | 0 | 0 | 0 | 0 |
End of Period Balance |  | 3,289 | 3,187 | 3,289 | 3,187 |
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period |  | (88) | (212) | (276) | (194) |
Mortgage Banking Revenue |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |
Net Gains (Losses) Included in Net Income |  | 69 | 89 | 173 | 185 |
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period |  | 20 | 20 | 20 | 20 |
Commercial Products Revenue |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |
Net Gains (Losses) Included in Net Income |  | (464) | 563 | (666) | (2,200) |
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period |  | 139 | 1,400 | 1,400 | 716 |
Other Noninterest Income |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |
Net Gains (Losses) Included in Net Income |  | (8) | (1) | (91) | (70) |
Net Change in Unrealized Gains (Losses) Relating to Assets and Liabilities Held at End of Period |  | $ (7) | $ (1) | $ (91) | $ (70) |
[1] | Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

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- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
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