v3.24.2
Investments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Schedule of Investments [Line Items]          
Allowance for credit losses $ 4   $ 4   $ 4
Proceeds from sales, maturities, calls or redemptions of fixed maturity securities 3,014 $ 9,675 8,414 $ 15,085  
Accrued investment income receivable 316   316   301
Fair value of collateral received at time of securities lending transactions $ 2,700   $ 2,700   $ 2,380
Securities lending transactions ratio of fair value of collateral held to fair value of securities loaned 102.00%   102.00%   102.00%
United States Government securities          
Schedule of Investments [Line Items]          
Allowance for credit losses $ 0   $ 0   $ 0
Residential mortgage-backed securities          
Schedule of Investments [Line Items]          
Allowance for credit losses 0   0   0
Overnight and Continuous | Cash          
Schedule of Investments [Line Items]          
Collateral received for securities loaned, at carrying value 2,269   2,269   2,255
Overnight and Continuous | United States Government securities          
Schedule of Investments [Line Items]          
Collateral received for securities loaned, at carrying value 261   261   99
Overnight and Continuous | Residential mortgage-backed securities          
Schedule of Investments [Line Items]          
Collateral received for securities loaned, at carrying value $ 170   $ 170   $ 26