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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liability	$ 257	$ 350
Total debt securities	10,379	10,601
Net credit valuation adjustment reducing fair value	3
Net credit valuation adjustment reducing fair value		9
U.S. Treasury, agencies, and corporations
Derivative Instruments, Gain (Loss) [Line Items]
Total debt securities	1,401	$ 781
Asset Pledged as Collateral | Securities Sold under Agreements to Repurchase
Derivative Instruments, Gain (Loss) [Line Items]
Cash	24
Asset Pledged as Collateral | Securities Sold under Agreements to Repurchase | U.S. Treasury, agencies, and corporations
Derivative Instruments, Gain (Loss) [Line Items]
Total debt securities	$ 200

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