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MARKET RISK BENEFITS - Schedule of Reconciliation of Market Risk Benefits (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Insurance [Abstract]      
Asset $ 704 $ 34  
Liability (3,276) (89)  
Effect of changes in the ending instrument-specific credit risk $ (2,572) $ (55) $ (118)