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 | |