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Segment Information - Pre-tax income (loss) from exited business (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Pre-tax income (loss) from exited business: |  |  |  |  |
Change in fair value of funds withheld embedded derivative |  | $ 20.3 | $ 232.9 | $ (189.4) | $ 429.9
Net realized capital gains (losses) on funds withheld assets | [1] | 3.7 | 19.0 | 31.7 | 66.5
Reconciling items |  |  |  |  |
Pre-tax income (loss) from exited business: |  |  |  |  |
Change in fair value of funds withheld embedded derivative |  | 20.3 | 232.9 | (189.4) | 429.9
Net realized capital gains (losses) on funds withheld assets |  | 3.7 | 19.0 | 31.7 | 66.5
Amortization of reinsurance gain (loss) |  | (20.4) | (417.5) | (46.8) | (427.6)
Other impacts of exited business |  | (36.7) | 161.7 | (142.9) | 124.9
Total pre-tax income (loss) from exited business |  | $ (33.1) | $ (3.9) | $ (347.4) | $ 193.7
[1] | Includes realized and unrealized gains (losses). See Note 4, Investments, for further details.

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