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FAIR VALUE DISCLOSURES - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Fair Value Inputs, Assets Quantitative Information [Line Items]      
AFS fixed maturities transferred from Level 3 to Level 2 $ 0 $ 10,000,000  
AFS fixed maturities transferred from Level 2 to Level 3 $ 0 $ 0  
Percentage of total equity representing AFS fixed maturities transferred 0.00% 2.70%  
Fair Value, Nonrecurring | Level 3      
Fair Value Inputs, Assets Quantitative Information [Line Items]      
Investments, fair value $ 80,000,000   $ 73,000,000