Segment Information - Pre-tax income (loss) from exited business (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Pre-tax income (loss) from exited business: | ||||||
| Change in fair value of funds withheld embedded derivative | $ 818.2 | $ (265.9) | $ 891.2 | $ (455.3) | ||
| Net realized capital gains (losses) on funds withheld assets | [1] | (17.0) | (0.2) | (15.7) | 31.5 | |
| Reconciling items | ||||||
| Pre-tax income (loss) from exited business: | ||||||
| Change in fair value of funds withheld embedded derivative | 818.2 | (265.9) | 891.2 | (455.3) | ||
| Net realized capital gains (losses) on funds withheld assets | (17.0) | (0.2) | (15.7) | 31.5 | ||
| Amortization of reinsurance gain (loss) | (14.0) | (18.3) | (52.2) | (65.1) | ||
| Other impacts of exited business | (315.3) | (34.3) | (386.2) | (177.2) | ||
| Total pre-tax income (loss) from exited business | $ 471.9 | $ (318.7) | $ 437.1 | $ (666.1) | ||
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