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FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets |  |  |
Fair Value | [1] | $ 29,777 | $ 24,007
Loans held for sale, at fair value: |  | 676 | 774
Mortgage servicing rights |  | 1,552 | 1,530
Total derivative assets |  | 1,593 | 1,839
Equity securities, at fair value |  | 115 | 110
Total assets |  | 33,713 | 28,260
Liabilities |  |  |
Total derivative liabilities |  | 2,183 | 3,111
Total liabilities |  | 2,183 | 3,111
Equity securities, at fair value |  | 173 | 153
Interest rate contracts |  |  |
Assets |  |  |
Total derivative assets |  | 464 | 347
Liabilities |  |  |
Total derivative liabilities |  | 1,149 | 1,632
Foreign exchange contracts |  |  |
Assets |  |  |
Total derivative assets |  | 434 | 527
Liabilities |  |  |
Total derivative liabilities |  | 378 | 519
Commodities contracts |  |  |
Assets |  |  |
Total derivative assets |  | 685 | 953
Liabilities |  |  |
Total derivative liabilities |  | 640 | 942
TBA contracts |  |  |
Assets |  |  |
Total derivative assets |  | 3 | 7
Liabilities |  |  |
Total derivative liabilities |  | 16 | 14
Other contracts |  |  |
Assets |  |  |
Total derivative assets |  | 7 | 5
Liabilities |  |  |
Total derivative liabilities |  | 0 | 4
Level 1 |  |  |
Assets |  |  |
Fair Value |  | 4,380 | 3,486
Loans held for sale, at fair value: |  | 0 | 0
Total derivative assets |  | 0 | 0
Equity securities, at fair value |  | 115 | 110
Total assets |  | 4,495 | 3,596
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Total liabilities |  | 0 | 0
Level 1 | Interest rate contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | Foreign exchange contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | Commodities contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | TBA contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 1 | Other contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 2 |  |  |
Assets |  |  |
Fair Value |  | 25,397 | 20,521
Loans held for sale, at fair value: |  | 676 | 774
Total derivative assets |  | 1,586 | 1,834
Equity securities, at fair value |  | 0 | 0
Total assets |  | 27,659 | 23,129
Liabilities |  |  |
Total derivative liabilities |  | 2,183 | 3,107
Total liabilities |  | 2,183 | 3,107
Level 2 | Interest rate contracts |  |  |
Assets |  |  |
Total derivative assets |  | 464 | 347
Liabilities |  |  |
Total derivative liabilities |  | 1,149 | 1,632
Level 2 | Foreign exchange contracts |  |  |
Assets |  |  |
Total derivative assets |  | 434 | 527
Liabilities |  |  |
Total derivative liabilities |  | 378 | 519
Level 2 | Commodities contracts |  |  |
Assets |  |  |
Total derivative assets |  | 685 | 953
Liabilities |  |  |
Total derivative liabilities |  | 640 | 942
Level 2 | TBA contracts |  |  |
Assets |  |  |
Total derivative assets |  | 3 | 7
Liabilities |  |  |
Total derivative liabilities |  | 16 | 14
Level 2 | Other contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
Loans held for sale, at fair value: |  | 0 | 0
Total derivative assets |  | 7 | 5
Equity securities, at fair value |  | 0 | 0
Total assets |  | 1,559 | 1,535
Liabilities |  |  |
Total derivative liabilities |  | 0 | 4
Total liabilities |  | 0 | 4
Level 3 | Interest rate contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | Foreign exchange contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | Commodities contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | TBA contracts |  |  |
Assets |  |  |
Total derivative assets |  | 0 | 0
Liabilities |  |  |
Total derivative liabilities |  | 0 | 0
Level 3 | Other contracts |  |  |
Assets |  |  |
Total derivative assets |  | 7 | 5
Liabilities |  |  |
Total derivative liabilities |  | 0 | 4
Investments Measured at Net Asset Value |  |  |
Liabilities |  |  |
Equity securities, at fair value |  | 58 | 43
Unfunded capital commitments |  | 28 | 42
Total mortgage-backed securities |  |  |
Assets |  |  |
Fair Value |  | 24,732 | 19,313
Total mortgage-backed securities | Level 1 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
Total mortgage-backed securities | Level 2 |  |  |
Assets |  |  |
Fair Value |  | 24,732 | 19,313
Total mortgage-backed securities | Level 3 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
Collateralized loan obligations |  |  |
Assets |  |  |
Fair Value |  | 664 | 1,206
Collateralized loan obligations | Level 1 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
Collateralized loan obligations | Level 2 |  |  |
Assets |  |  |
Fair Value |  | 664 | 1,206
Collateralized loan obligations | Level 3 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
State and political subdivisions |  |  |
Assets |  |  |
Fair Value |  | 1 | 2
State and political subdivisions | Level 1 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
State and political subdivisions | Level 2 |  |  |
Assets |  |  |
Fair Value |  | 1 | 2
State and political subdivisions | Level 3 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
U.S. Treasury and other |  |  |
Assets |  |  |
Fair Value |  | 4,380 | 3,486
U.S. Treasury and other | Level 1 |  |  |
Assets |  |  |
Fair Value |  | 4,380 | 3,486
U.S. Treasury and other | Level 2 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
U.S. Treasury and other | Level 3 |  |  |
Assets |  |  |
Fair Value |  | 0 | 0
Residential loans held for sale |  |  |
Assets |  |  |
Loans held for sale, at fair value: |  | 614 | 666
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: |  | 614 | 666
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: |  | 62 | 108
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: |  | 62 | 108
Commercial loans held for sale | Level 3 |  |  |
Assets |  |  |
Loans held for sale, at fair value: |  | 0 | 0
Mortgage Servicing Rights |  |  |
Assets |  |  |
Mortgage servicing rights |  | 1,552 | 1,530
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 |  | $ 1,552 | $ 1,530
[1] | Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

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