v3.25.4
Fair Value Measurements - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Average original expected lives (in years) 10 years  
Unfunded commitments $ 3,400 $ 2,600
Transfers into Level 3 at end of reporting period, net (losses) gains not included in realized and unrealized gains and losses related to Level 3 for the period 0 (17)
Transfers out Level 3 at end of reporting period, net (losses) gains included in realized and unrealized gains and losses related to Level 3 for the period. $ (24) $ 31
Interest Rate Swap    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Liability for policyholder contract deposits, interest rate (as a percent) 5.04%  
Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Extension period (in years) 1 year  
Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Extension period (in years) 2 years