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Statutory Financial Information (Narrative) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Statutory Accounting Practices [Line Items]
Amount of cash and investments held as funds at Lloyd's	$ 913.7
Parent Company [Member]
Statutory Accounting Practices [Line Items]
Amount of cash and investments held as funds at Lloyd's	272.4
United States [Member]
Statutory Accounting Practices [Line Items]
Amount available for dividend payment	672.9
Bermuda [Member]
Statutory Accounting Practices [Line Items]
Amount available for dividend payment	$ 603.6

X

- Definition

The amount of cash and investments comprising the funds at Lloyd's.

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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- Definition

Amount of dividends available for payment after computation of statutory restrictions on capital surplus.

+ References

No definition available.

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- Details

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