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DERIVATIVES - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Derivative [Line Items]    
Cash and securities collateral for derivative contract $ 14,700 $ 9,200
Cash and securities collateral 125 75
S&P 500, Nasdaq, Russell 2000 And Emerging Market Indices    
Derivative [Line Items]    
Initial margin requirement 492 369
U.S. Treasury Notes, U.S. Treasury Bonds And Ultra-Long Bonds    
Derivative [Line Items]    
Initial margin requirement 126 120
Euro Stoxx, FTSE100, Topix, ASX200 and EAFE Indices    
Derivative [Line Items]    
Initial margin requirement $ 14 $ 14