v3.26.1
Investments - Additional Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
loan
modifiedLoan
Jun. 30, 2025
USD ($)
modifiedLoan
Jun. 30, 2026
USD ($)
loan
modifiedLoan
Jun. 30, 2025
USD ($)
modifiedLoan
Dec. 31, 2025
USD ($)
loan
Net Investment Income [Line Items]          
Percentage of investment portfolio by which no other industry group exceeded     10.00%    
Percentage of stockholders' equity by which no single issuer of fixed maturity securities exceeded     10.00%    
Commercial mortgage loans $ 6,408   $ 6,408   $ 6,363
Number of commercial mortgage loan modified | modifiedLoan 1 1 1 1  
Office          
Net Investment Income [Line Items]          
Commercial mortgage loans $ 1,262   $ 1,262   1,292
Office | Extended Maturity          
Net Investment Income [Line Items]          
Commercial mortgage loans 36 $ 9 $ 36 $ 9  
Percentage of modified loan     3.00% 1.00%  
Extended contractual term     5 years 2 years  
Industrial          
Net Investment Income [Line Items]          
Commercial mortgage loans $ 1,502   $ 1,502   $ 1,454
Financing Receivables More Then 90 Days Past Due | Office          
Net Investment Income [Line Items]          
Number of mortgage loan | loan 1   1   1
Commercial mortgage loans $ 6   $ 6   $ 6
Financing Receivables More Then 90 Days Past Due | Industrial          
Net Investment Income [Line Items]          
Number of mortgage loan | loan 2   2    
Commercial mortgage loans $ 1   $ 1    
Financing Receivables 31 To 60 Days Past Due | Industrial          
Net Investment Income [Line Items]          
Commercial mortgage loans         $ 3
Finance and insurance | Fixed maturity securities:          
Net Investment Income [Line Items]          
Percent of investment portfolio, greater than 10%     26.00%    
Utilities | Fixed maturity securities:          
Net Investment Income [Line Items]          
Percent of investment portfolio, greater than 10%     15.00%    
Consumer—non-cyclical | Fixed maturity securities:          
Net Investment Income [Line Items]          
Percent of investment portfolio, greater than 10%     15.00%    
Energy | Fixed maturity securities:          
Net Investment Income [Line Items]          
Percent of investment portfolio, greater than 10%     10.00%