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FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Fair Value Inputs Assets Quantitative Information [Line Items]    
Change in purchased market risk benefit asset fair value $ 382 $ 687
AFS fixed maturities transferred from Level 3 to Level 2 154 517
AFS fixed maturities transferred from Level 2 to Level 3 $ 132 $ 36
Percentage of total equity representing AFS fixed maturities transferred 8.30% 12.60%
Nonrecurring | Level 3    
Fair Value Inputs Assets Quantitative Information [Line Items]    
Investments, fair value $ 1,700 $ 1,100