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DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Instruments (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Asset Fair Value |  |
Asset Fair Value | $ 646 | $ 640
Less: gross amounts offset in the Consolidated Balance Sheets, Asset Fair Value | 0 | 0
Derivative assets | 646 | 640
Less: amounts subject to master netting agreements, Asset Fair Value | (50) | (97)
Less: cash collateral pledged (received) subject to master netting agreements | (533) | (405)
Total net derivative fair value, Asset Fair Value | 63 | 138
Liability Fair Value |  |
Liability Fair Value | (636) | (636)
Less: gross amounts offset in the Consolidated Balance Sheets, Liability Fair Value | 0 | 0
Derivative liability | (636) | (636)
Less: amounts subject to master netting agreements, Asset Liability Value | 50 | 97
Less: cash collateral pledged (received) subject to master netting agreements | 3 | 39
Total net derivative fair value, Liability Fair Value | (583) | (500)
Variation margin, amount reducing derivative asset | 87 | 66
Variation margin, amount reducing derivative liability | 32 | 37
Qualifying Hedges |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 3,999 | 815
Asset Fair Value |  |
Asset Fair Value | 0 | 0
Liability Fair Value |  |
Liability Fair Value | 0 | 0
Derivative instruments and hedges, assets | 2 | 4
Derivative instruments and hedges, liabilities | 2 | 0
Qualifying Hedges | Fair Value Hedges |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 1,499 | 815
Asset Fair Value |  |
Asset Fair Value | 0 | 0
Liability Fair Value |  |
Liability Fair Value | 0 | 0
Qualifying Hedges | Interest rate contracts | Fair Value Hedges | Time deposits |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 334 | 0
Asset Fair Value |  |
Asset Fair Value | 0 | 0
Liability Fair Value |  |
Liability Fair Value | 0 | 0
Qualifying Hedges | Interest rate contracts | Fair Value Hedges | Long-term borrowings |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 1,165 | 815
Asset Fair Value |  |
Asset Fair Value | 0 | 0
Liability Fair Value |  |
Liability Fair Value | 0 | 0
Qualifying Hedges | Interest rate contracts | Cash Flow Hedges | Loans |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 2,500 | 0
Asset Fair Value |  |
Asset Fair Value | 0 | 0
Liability Fair Value |  |
Liability Fair Value | 0 | 0
Non-qualifying Hedges |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 35,184 | 34,673
Asset Fair Value |  |
Asset Fair Value | 646 | 640
Liability Fair Value |  |
Liability Fair Value | (636) | (636)
Non-qualifying Hedges | Interest rate contracts |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 25,266 | 24,548
Asset Fair Value |  |
Asset Fair Value | 553 | 530
Liability Fair Value |  |
Liability Fair Value | (569) | (518)
Non-qualifying Hedges | Foreign currency forward contracts |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 8,685 | 9,142
Asset Fair Value |  |
Asset Fair Value | 83 | 104
Liability Fair Value |  |
Liability Fair Value | (66) | (117)
Non-qualifying Hedges | Foreign exchange spot contracts |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 176 | 179
Liability Fair Value |  |
Net fair value | 0 | 0
Non-qualifying Hedges | Other contracts |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | 1,233 | 983
Asset Fair Value |  |
Asset Fair Value | 10 | 6
Liability Fair Value |  |
Liability Fair Value | $ (1) | $ (1)

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