v3.26.3
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Derivatives $ 783 $ 260
Available-for-sale, at fair value 8,786 9,207
U.S. Treasury, agencies, and corporations    
Derivative Instruments, Gain (Loss) [Line Items]    
Available-for-sale, at fair value 2,065 $ 1,411
Asset Pledged as Collateral | Securities Sold under Agreements to Repurchase    
Derivative Instruments, Gain (Loss) [Line Items]    
Cash 102  
Asset Pledged as Collateral | Securities Sold under Agreements to Repurchase | U.S. Treasury, agencies, and corporations    
Derivative Instruments, Gain (Loss) [Line Items]    
Available-for-sale, at fair value $ 190