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OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance beginning of period $ 13,202 $ 8,441  
Current period change (204) 1,063 $ (2,008)
Balance end of period 13,875 13,202 8,441
URA(D) of securities      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance beginning of period (723) (1,709)  
Current period change (109) 986  
Balance end of period (831) (723) (1,709)
Foreign Currency Translation Adjustment      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance beginning of period (195) (254)  
Current period change (128) 59  
Balance end of period (323) (195) (254)
Benefit plan net gain (loss)      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance beginning of period (16) (33)  
Current period change 33 17  
Balance end of period 16 (16) (33)
Accumulated Other Comprehensive Income (Loss)      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Balance beginning of period (934) (1,996) 12
Current period change (204) 1,063 (2,008)
Balance end of period $ (1,138) $ (934) $ (1,996)