XML 93 R73.htm IDEA: XBRL DOCUMENT v3.25.1
Fair Value of Assets and Liabilities - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Fixed income securities, at fair value $ 51,993 $ 52,747
Assets at fair value 64,946 63,521
Fixed Income Securities Valued Based on Nonbinding Broker Quotes    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Assets at fair value 24 22
Municipal Not Rated by Third Party Credit Rating Agencies    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Assets at fair value 2 2
Significant unobservable inputs (Level 3)    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Assets at fair value 847 805
Recurring basis    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Fixed income securities, at fair value 51,993 52,747
Assets at fair value 64,944 63,518
Recurring basis | Significant unobservable inputs (Level 3)    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Fixed income securities, at fair value 285 248
Debt securities valued based on third-party discounted cash flow pricing models 86 87
Assets at fair value 845 $ 802
Limited partnership interests    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Commitments to invest in limited partnership interests $ 153  
Limited partnership interests | Minimum    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Investment assets, useful life (in years) 10 years  
Limited partnership interests | Maximum    
Fair value of assets and liabilities measured on recurring and non-recurring basis    
Investment assets, useful life (in years) 12 years