v3.26.1
Investments - Available for sale fixed maturities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost $ 11,425   $ 11,101      
Allowance for Expected Credit Losses 25 $ 26 21 $ 15 $ 41 $ 34
Available for sale (AFS) fixed maturities 11,258   11,052      
Total fixed maturities            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 11,425   11,101      
Allowance for Expected Credit Losses 25   21      
Gross unrealized, gains 92   165      
Gross unrealized, losses (234)   (193)      
Net Unrealized (142)   (28)      
Available for sale (AFS) fixed maturities 11,258   11,052      
U.S. government and government agencies            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 144   160      
Allowance for Expected Credit Losses 0   0      
Gross unrealized, gains 0   1      
Gross unrealized, losses (1)   0      
Net Unrealized (1)   1      
Available for sale (AFS) fixed maturities 143   161      
States, municipalities and political subdivisions            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 795   853      
Allowance for Expected Credit Losses 0   0      
Gross unrealized, gains 5   8      
Gross unrealized, losses (27)   (26)      
Net Unrealized (22)   (18)      
Available for sale (AFS) fixed maturities 773   835      
Foreign government            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 230   236      
Allowance for Expected Credit Losses 0   0      
Gross unrealized, gains 2   2      
Gross unrealized, losses 0   0      
Net Unrealized 2   2      
Available for sale (AFS) fixed maturities 232   238      
Residential MBS            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 3,281   2,808      
Allowance for Expected Credit Losses 1   1      
Gross unrealized, gains 28   43      
Gross unrealized, losses (125)   (103)      
Net Unrealized (97)   (60)      
Available for sale (AFS) fixed maturities 3,183   2,747      
Collateralized loan obligations            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 1,103   1,167      
Allowance for Expected Credit Losses 4   5      
Gross unrealized, gains 0   1      
Gross unrealized, losses (3)   (3)      
Net Unrealized (3)   (2)      
Available for sale (AFS) fixed maturities 1,096   1,160      
Other asset-backed securities            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 2,610   2,539      
Allowance for Expected Credit Losses 6   5      
Gross unrealized, gains 11   29      
Gross unrealized, losses (48)   (38)      
Net Unrealized (37)   (9)      
Available for sale (AFS) fixed maturities 2,567   2,525      
Corporate and other            
Debt Securities, Available-for-sale [Line Items]            
Amortized Cost 3,262   3,338      
Allowance for Expected Credit Losses 14 $ 15 10 $ 5 $ 30 $ 23
Gross unrealized, gains 46   81      
Gross unrealized, losses (30)   (23)      
Net Unrealized 16   58      
Available for sale (AFS) fixed maturities $ 3,264   $ 3,386