Segment Information - Revenues from exited business (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues from exited business:
Change in fair value of funds withheld embedded derivative	$ (1,085.7)	$ 3,652.8	$ 0.0
Net realized capital gains on funds withheld assets	165.0	749.4
Amortization of reinsurance gain	5.9	12.6
Other impacts of reinsured business	(12.7)
Total revenues from exited business	(927.5)	4,414.8
Operating Segments
Revenues from exited business:
Change in fair value of funds withheld embedded derivative	(1,085.7)	3,652.8
Net realized capital gains on funds withheld assets	165.0	749.4
Reconciling Items
Revenues from exited business:
Change in fair value of funds withheld embedded derivative	(228.0)	767.1
Net realized capital gains on funds withheld assets	34.6	157.4
Total revenues from exited business	$ (927.5)	$ 4,414.8

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No definition available.

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The amount of change in fair value of funds withheld embedded derivative.

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Amount of realized capital gains (losses) on funds withheld assets.

No definition available.

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Amount of increase (decrease) in revenue due to other impacts of reinsured business.

No definition available.

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Represents information pertaining to revenue from exited business.

No definition available.

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No definition available.

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