v3.26.3
Investments - Investments - ACL on Fixed Maturities (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]        
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Beginning Balance $ 16 $ 14 $ 16 $ 16
Credit losses on fixed maturities where credit losses were not previously recorded 4 0 4 0
Reduction due to sales (1) 0 (1) 0
Net increases (decreases) in allowance on fixed maturities that had an allowance in a previous period     0 (2)
Corporate        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]        
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Beginning Balance 0   0 3
Credit losses on fixed maturities where credit losses were not previously recorded 4   4 0
Reduction due to sales 0   0 0
Net increases (decreases) in allowance on fixed maturities that had an allowance in a previous period     0 (3)
Collateralized Loan Obligations [Member]        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]        
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Beginning Balance 2   2  
Credit losses on fixed maturities where credit losses were not previously recorded 0   0  
Reduction due to sales 0   0  
Net increases (decreases) in allowance on fixed maturities that had an allowance in a previous period     0  
CMBS        
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]        
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Beginning Balance 14 14 14 13
Credit losses on fixed maturities where credit losses were not previously recorded 0 0 0 0
Reduction due to sales $ (1) $ 0 (1) 0
Net increases (decreases) in allowance on fixed maturities that had an allowance in a previous period     $ 0 $ 1