v3.26.1
Investments (Mortgage Loans - Narrative) (Details) - Mortgage Loans
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
portfolioSegment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Accrued interest receivable $ 128   $ 128   $ 132
Number of investment portfolio segments | portfolioSegment     3    
Financing receivables in nonaccrual status with no allowance for credit losses $ 50   $ 50   $ 54
Financing receivables in nonaccrual status, investment income     $ 3 $ 3  
Minimum | Performing          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing receivable, before allowance for credit losses by performance status as a percentage of financing receivables, before allowance for credit losses 99.00%   99.00%   99.00%
Residential          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing receivables purchased from third parties $ 426 $ 379 $ 721 $ 557