v3.26.1
FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Fair Value Inputs Assets Quantitative Information [Line Items]      
Change in purchased market risk benefit asset fair value $ 34   $ 42
AFS fixed maturities transferred from Level 3 to Level 2 512 $ 879  
AFS fixed maturities transferred from Level 2 to Level 3 $ 220 $ 183  
Percentage of total equity representing AFS fixed maturities transferred 39.40% 25.30%  
Nonrecurring | Level 3      
Fair Value Inputs Assets Quantitative Information [Line Items]      
Investments, fair value $ 3,700   $ 3,500