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FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Assets |  |  |
Debt securities available for sale | [1] | $ 34,208 | $ 32,765
Loans held for sale at fair value |  | 1,137 | 825
Mortgage servicing rights |  | 1,397 | 1,491
Derivative assets |  | 1,477 | 1,476
Equity securities, at fair value |  | 178 | 162
Short-term investments |  | 55 | 53
Total assets |  | 38,452 | 36,772
Liabilities |  |  |
Total derivative liabilities |  | 1,657 | 1,710
Short-term borrowed funds |  | 47 | 0
Other liabilities |  | 106 | 101
Total liabilities |  | 1,810 | 1,811
Equity securities excluded from investments |  | 236 | 220
Interest rate contracts |  |  |
Assets |  |  |
Derivative assets |  | 459 | 562
Liabilities |  |  |
Total derivative liabilities |  | 684 | 910
Foreign exchange contracts |  |  |
Assets |  |  |
Derivative assets |  | 318 | 472
Liabilities |  |  |
Total derivative liabilities |  | 326 | 411
Commodities contracts |  |  |
Assets |  |  |
Derivative assets |  | 689 | 429
Liabilities |  |  |
Total derivative liabilities |  | 634 | 379
TBA contracts |  |  |
Assets |  |  |
Derivative assets |  | 2 | 10
Liabilities |  |  |
Total derivative liabilities |  | 10 | 8
Other contracts |  |  |
Assets |  |  |
Derivative assets |  | 9 | 3
Liabilities |  |  |
Total derivative liabilities |  | 3 | 2
Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 4,069 | 3,525
Loans held for sale at fair value |  | 0 | 0
Derivative assets |  | 0 | 0
Equity securities, at fair value |  | 178 | 162
Short-term investments |  | 20 | 40
Total assets |  | 4,267 | 3,727
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Short-term borrowed funds |  | 39 | 0
Other liabilities |  | 0 | 0
Total liabilities |  | 39 | 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 |  | 30,139 | 29,240
Loans held for sale at fair value |  | 1,137 | 825
Derivative assets |  | 1,469 | 1,473
Equity securities, at fair value |  | 0 | 0
Short-term investments |  | 35 | 13
Total assets |  | 32,780 | 31,551
Liabilities |  |  |
Total derivative liabilities |  | 1,654 | 1,708
Short-term borrowed funds |  | 8 | 0
Other liabilities |  | 106 | 101
Total liabilities |  | 1,768 | 1,809
Level 2 | Interest rate contracts |  |  |
Assets |  |  |
Derivative assets |  | 459 | 562
Liabilities |  |  |
Total derivative liabilities |  | 684 | 910
Level 2 | Foreign exchange contracts |  |  |
Assets |  |  |
Derivative assets |  | 318 | 472
Liabilities |  |  |
Total derivative liabilities |  | 326 | 411
Level 2 | Commodities contracts |  |  |
Assets |  |  |
Derivative assets |  | 689 | 429
Liabilities |  |  |
Total derivative liabilities |  | 634 | 379
Level 2 | TBA contracts |  |  |
Assets |  |  |
Derivative assets |  | 2 | 10
Liabilities |  |  |
Total derivative liabilities |  | 10 | 8
Level 2 | Other contracts |  |  |
Assets |  |  |
Derivative assets |  | 1 | 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 |  | 1,405 | 1,494
Liabilities |  |  |
Total derivative liabilities |  | 3 | 2
Short-term borrowed funds |  | 0 | 0
Other liabilities |  | 0 | 0
Total liabilities |  | 3 | 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 |  | 3 | 2
Fair Value Measured at Net Asset Value Per Share |  |  |
Liabilities |  |  |
Equity securities excluded from investments |  | 58 | 58
Unfunded capital commitments |  | 23 | 24
Mortgage-backed securities |  |  |
Assets |  |  |
Debt securities available for sale |  | 30,014 | 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 |  | 30,014 | 29,055
Mortgage-backed securities | Level 3 |  |  |
Assets |  |  |
Debt securities available for sale |  | 0 | 0
Collateralized loan obligations |  |  |
Assets |  |  |
Debt securities available for sale |  | 124 | 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 |  | 124 | 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 |  | 4,069 | 3,525
U.S. Treasury and other | Level 1 |  |  |
Assets |  |  |
Debt securities available for sale |  | 4,069 | 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 |  | 922 | 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 |  | 922 | 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 |  | 215 | 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 |  | 215 | 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 |  | 1,397 | 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 |  | $ 1,397 | $ 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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