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INVESTMENT SECURITIES - SALES AND CALLS OF AFS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
INVESTMENT SECURITIES      
Sales of available for sale securities $ 0 $ 0 $ 0
Calls of available for sale securities $ 65 $ 0 $ 90