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Commitments and Contingencies - Schedule of Additional Amount into Investment Portfolio (Details) $ in Millions	Dec. 31, 2024 USD ($)
Alternative investments
Other Commitments [Line Items]
Amount of Obligation	$ 320.5
Non-publicly traded CLOs in our fixed income securities portfolio
Other Commitments [Line Items]
Amount of Obligation	143.4
Non-publicly traded common stock within our equity portfolio
Other Commitments [Line Items]
Amount of Obligation	22.1
CMLs
Other Commitments [Line Items]
Amount of Obligation	18.4
Privately-placed corporate securities
Other Commitments [Line Items]
Amount of Obligation	57.0
Investments
Other Commitments [Line Items]
Amount of Obligation	$ 561.4

X

- Definition

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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- Definition

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+ References

No definition available.

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