Statutory Accounting - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Insurance Subsidiaries
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Statutory capital and surplus	$ 590.0
Bermuda Subsidiaries
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Statutory capital and surplus	$ 609.8	$ 142.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration