Investments - Schedule of Changes in Allowance for Expected Credit Losses on Mortgage Loans (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Financing Receivable, Allowance for Credit Loss | ||||
| Beginning Balance | $ (97) | $ (73) | $ (86) | $ (70) |
| Provision (expense) benefit for loan losses | (11) | (2) | (22) | (5) |
| Ending Balance | (108) | (75) | (108) | (75) |
| Residential Mortgage | ||||
| Financing Receivable, Allowance for Credit Loss | ||||
| Beginning Balance | (74) | (56) | (68) | (53) |
| Provision (expense) benefit for loan losses | (7) | (2) | (13) | (5) |
| Ending Balance | (81) | (58) | (81) | (58) |
| Commercial Mortgage | ||||
| Financing Receivable, Allowance for Credit Loss | ||||
| Beginning Balance | (23) | (17) | (18) | (17) |
| Provision (expense) benefit for loan losses | (4) | 0 | (9) | 0 |
| Ending Balance | $ (27) | $ (17) | $ (27) | $ (17) |