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Statutory Requirements - Schedule Of Assets Held Under Trust And Minimum (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Statutory Accounting Practices [Line Items]
Assets held in trust	$ 10,500,000	$ 7,900,000
Multi-Beneficiary Reinsurance Trust | Renaissance Reinsurance
Statutory Accounting Practices [Line Items]
Assets held in trust	584,708	633,737
Multi-Beneficiary Reinsurance Trust | Renaissance Reinsurance | Minimum
Statutory Accounting Practices [Line Items]
Assets held in trust	381,497	511,421
Multi-Beneficiary Reinsurance Trust | DaVinci Reinsurance
Statutory Accounting Practices [Line Items]
Assets held in trust	174,352	255,628
Multi-Beneficiary Reinsurance Trust | DaVinci Reinsurance | Minimum
Statutory Accounting Practices [Line Items]
Assets held in trust	114,203	200,075
Multi-Beneficiary Reinsurance Trust | Validus Re
Statutory Accounting Practices [Line Items]
Assets held in trust	625,100	756,926
Multi-Beneficiary Reinsurance Trust | Validus Re | Minimum
Statutory Accounting Practices [Line Items]
Assets held in trust	529,149	624,273
Multi-Beneficiary Reinsurance Trust | Validus Switzerland
Statutory Accounting Practices [Line Items]
Assets held in trust	1,342,339	1,064,755
Multi-Beneficiary Reinsurance Trust | Validus Switzerland | Minimum
Statutory Accounting Practices [Line Items]
Assets held in trust	$ 1,298,712	$ 1,055,377

X

- Definition

The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

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- 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//1943274/2147479440/944-210-S99-1

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