Investments - Schedule of Rollforward of Credit Loss Allowance for Mortgage Loans (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Mortgage loans | ||||
| Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] | ||||
| Beginning balance | $ (10) | $ (12) | $ (10) | $ (12) |
| Net increases related to credit losses | (3) | 0 | (3) | 0 |
| Write-offs | 0 | 0 | 0 | 0 |
| Ending balance | (13) | (12) | (13) | (12) |
| Commercial | ||||
| Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] | ||||
| Ending balance | (10) | (11) | (10) | (11) |
| Residential | ||||
| Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] | ||||
| Ending balance | $ (3) | $ (1) | $ (3) | $ (1) |