v3.25.2
Derivatives - Narrative (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
swap
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Number of interest rate swaps entered during the period | swap     1    
Gains (losses) on interest rate swaps expected to be reclassified from AOCI to net earnings over the next 12 months.     $ 6    
Interest rate swaps | Designated as hedging instrument | Net investment income          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Reclassification from accumulated other comprehensive income $ (2) $ (7) (5) $ (14)  
Interest rate swaps | Cash flow hedging | Designated as hedging instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount 768   768   $ 1,050
Collateral receivable supporting swaps 17   17   27
Total return swap | Not designated as hedging instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Collateral receivable supporting swaps         $ 4
Liability to return collateral related to swaps 3   3    
New interest rate swaps entered during the period | Cash flow hedging | Designated as hedging instrument          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Derivative, notional amount $ 12   $ 12