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Segment Information - Revenues from exited business (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Revenues from exited business: |  |  |  |  |
Change in fair value of funds withheld embedded derivative |  | $ 925.6 | $ 1,237.7 | $ 392.9 | $ 4,305.0
Net realized capital gains (losses) on funds withheld assets | [1] | 1.0 | 8.5 | 119.8 | 697.5
Reconciling Items |  |  |  |  |
Revenues from exited business: |  |  |  |  |
Change in fair value of funds withheld embedded derivative |  | 925.6 | 1,237.7 | 392.9 | 4,305.0
Net realized capital gains (losses) on funds withheld assets |  | 1.0 | 8.5 | 119.8 | 697.5
Amortization of reinsurance gain |  | 1.6 | 3.4 | 4.5 | 8.3
Other impacts of reinsured business |  | (3.3) |  | (9.0) |
Total revenues from exited business |  | $ 924.9 | $ 1,249.6 | $ 508.2 | $ 5,010.8
[1] | Includes realized and unrealized gains (losses). See Note 3, Investments, for further details.

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