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FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets |  |  |
Debt securities available for sale | [1] | $ 35,419 | $ 32,765
Loans held for sale at fair value |  | 768 | 825
Mortgage servicing rights |  | 1,430 | 1,491
Derivative assets |  | 1,523 | 1,476
Equity securities, at fair value |  | 224 | 162
Short-term investments |  | 73 | 53
Total assets |  | 39,437 | 36,772
Liabilities |  |  |
Total derivative liabilities |  | 1,286 | 1,710
Short-term borrowed funds |  | 213 | 0
Other liabilities |  | 162 | 101
Total liabilities |  | 1,661 | 1,811
Equity securities excluded from investments |  | 286 | 220
Interest rate contracts |  |  |
Assets |  |  |
Derivative assets |  | 492 | 562
Liabilities |  |  |
Total derivative liabilities |  | 489 | 910
Foreign exchange contracts |  |  |
Assets |  |  |
Derivative assets |  | 563 | 472
Liabilities |  |  |
Total derivative liabilities |  | 399 | 411
Commodities contracts |  |  |
Assets |  |  |
Derivative assets |  | 438 | 429
Liabilities |  |  |
Total derivative liabilities |  | 381 | 379
TBA contracts |  |  |
Assets |  |  |
Derivative assets |  | 7 | 10
Liabilities |  |  |
Total derivative liabilities |  | 13 | 8
Other contracts |  |  |
Assets |  |  |
Derivative assets |  | 23 | 3
Liabilities |  |  |
Total derivative liabilities |  | 4 | 2
Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 4,514 | 3,525
Loans held for sale at fair value |  | 0 | 0
Derivative assets |  | 0 | 0
Equity securities, at fair value |  | 224 | 162
Short-term investments |  | 30 | 40
Total assets |  | 4,768 | 3,727
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Short-term borrowed funds |  | 203 | 0
Other liabilities |  | 0 | 0
Total liabilities |  | 203 | 0
Level 1 | Interest rate contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | Foreign exchange contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | Commodities contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | TBA contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | Other contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 2 |  |  |
Assets |  |  |
Debt securities available for sale |  | 30,905 | 29,240
Loans held for sale at fair value |  | 768 | 825
Derivative assets |  | 1,515 | 1,473
Equity securities, at fair value |  | 0 | 0
Short-term investments |  | 43 | 13
Total assets |  | 33,231 | 31,551
Liabilities |  |  |
Total derivative liabilities |  | 1,282 | 1,708
Short-term borrowed funds |  | 10 | 0
Other liabilities |  | 162 | 101
Total liabilities |  | 1,454 | 1,809
Level 2 | Interest rate contracts |  |  |
Assets |  |  |
Derivative assets |  | 492 | 562
Liabilities |  |  |
Total derivative liabilities |  | 489 | 910
Level 2 | Foreign exchange contracts |  |  |
Assets |  |  |
Derivative assets |  | 563 | 472
Liabilities |  |  |
Total derivative liabilities |  | 399 | 411
Level 2 | Commodities contracts |  |  |
Assets |  |  |
Derivative assets |  | 438 | 429
Liabilities |  |  |
Total derivative liabilities |  | 381 | 379
Level 2 | TBA contracts |  |  |
Assets |  |  |
Derivative assets |  | 7 | 10
Liabilities |  |  |
Total derivative liabilities |  | 13 | 8
Level 2 | Other contracts |  |  |
Assets |  |  |
Derivative assets |  | 15 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
Loans held for sale at fair value |  | 0 | 0
Derivative assets |  | 8 | 3
Equity securities, at fair value |  | 0 | 0
Short-term investments |  | 0 | 0
Total assets |  | 1,438 | 1,494
Liabilities |  |  |
Total derivative liabilities |  | 4 | 2
Short-term borrowed funds |  | 0 | 0
Other liabilities |  | 0 | 0
Total liabilities |  | 4 | 2
Level 3 | Interest rate contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | Foreign exchange contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | Commodities contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | TBA contracts |  |  |
Assets |  |  |
Derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | Other contracts |  |  |
Assets |  |  |
Derivative assets |  | 8 | 3
Liabilities |  |  |
Total derivative liabilities |  | 4 | 2
Fair Value Measured at Net Asset Value Per Share |  |  |
Liabilities |  |  |
Equity securities excluded from investments |  | 62 | 58
Unfunded capital commitments |  | 17 | 24
Mortgage-backed securities |  |  |
Assets |  |  |
Debt securities available for sale |  | 30,814 | 29,055
Mortgage-backed securities | Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
Mortgage-backed securities | Level 2 |  |  |
Assets |  |  |
Debt securities available for sale |  | 30,814 | 29,055
Mortgage-backed securities | Level 3 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
Collateralized loan obligations |  |  |
Assets |  |  |
Debt securities available for sale |  | 90 | 184
Collateralized loan obligations | Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
Collateralized loan obligations | Level 2 |  |  |
Assets |  |  |
Debt securities available for sale |  | 90 | 184
Collateralized loan obligations | Level 3 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
State and political subdivisions |  |  |
Assets |  |  |
Debt securities available for sale |  | 1 | 1
State and political subdivisions | Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
State and political subdivisions | Level 2 |  |  |
Assets |  |  |
Debt securities available for sale |  | 1 | 1
State and political subdivisions | Level 3 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
U.S. Treasury and other |  |  |
Assets |  |  |
Debt securities available for sale |  | 4,514 | 3,525
U.S. Treasury and other | Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 4,514 | 3,525
U.S. Treasury and other | Level 2 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
U.S. Treasury and other | Level 3 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
Residential loans held for sale |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 592 | 633
Residential loans held for sale | Level 1 |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 0 | 0
Residential loans held for sale | Level 2 |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 592 | 633
Residential loans held for sale | Level 3 |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 0 | 0
Commercial loans held for sale |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 176 | 192
Commercial loans held for sale | Level 1 |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 0 | 0
Commercial loans held for sale | Level 2 |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 176 | 192
Commercial loans held for sale | Level 3 |  |  |
Assets |  |  |
Loans held for sale at fair value |  | 0 | 0
Mortgage servicing rights |  |  |
Assets |  |  |
Mortgage servicing rights |  | 1,430 | 1,491
Mortgage servicing rights | Level 1 |  |  |
Assets |  |  |
Mortgage servicing rights |  | 0 | 0
Mortgage servicing rights | Level 2 |  |  |
Assets |  |  |
Mortgage servicing rights |  | 0 | 0
Mortgage servicing rights | Level 3 |  |  |
Assets |  |  |
Mortgage servicing rights |  | $ 1,430 | $ 1,491
[1] | Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

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