Reinsurance - Components of Net Realized Capital Gains (Losses) on Funds Withheld Assets (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Reinsurance | ||||
| Net realized capital gains (losses) | $ (8.0) | $ 0.8 | $ (36.2) | $ (49.6) |
| Fixed maturities, available-for-sale | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | (5.3) | 1.3 | (27.3) | (46.2) |
| Fixed maturities, trading | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | (3.0) | (6.1) | 0.1 | |
| Mortgage loans | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | (0.1) | (4.0) | (1.4) | |
| Derivatives | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | $ 0.3 | $ (0.4) | $ 1.2 | $ (2.1) |