v3.26.1
Investments (Mortgage Loans - Narrative) (Details) - Mortgage Loans
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
portfolioSegment
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accrued interest receivable $ 125   $ 132
Number of investment portfolio segments | portfolioSegment 3    
Financing receivables in nonaccrual status with no allowance for credit losses $ 51   $ 54
Financing receivables in nonaccrual status, investment income $ 2 $ 1  
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%
Residential      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing receivables purchased from third parties $ 296 $ 178