Reinsurance - Components of Net Realized Capital Gains (Losses) on Funds Withheld Assets (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Reinsurance | ||||
| Net realized capital gains (losses) | $ (18.9) | $ (10.2) | $ (50.4) | $ (39.4) |
| Fixed maturities, available-for-sale | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | (19.5) | (11.0) | (47.5) | (41.2) |
| Fixed maturities, trading | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | 0.1 | |||
| Mortgage loans | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | 0.1 | (1.3) | ||
| Derivatives | ||||
| Reinsurance | ||||
| Net realized capital gains (losses) | $ 0.5 | $ 0.8 | $ (1.7) | $ 1.8 |