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COLLATERALIZED REINSURANCE, TRUST AGREEMENTS AND OTHER RESTRICTED ASSETS - Schedule of Collateralized Reinsurance Agreements (Details) - Kilimanjaro Re Limited $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($)
Effects of Reinsurance [Line Items]
Limit	$ 1,150
Reinsurance Contract [Axis]: Series 2021-1 Class A-1
Effects of Reinsurance [Line Items]
Limit	150
Reinsurance Contract [Axis]: Series 2021-1 Class A-2
Effects of Reinsurance [Line Items]
Limit	150
Reinsurance Contract [Axis]: Series 2021-1 Class B-1
Effects of Reinsurance [Line Items]
Limit	85
Reinsurance Contract [Axis]: Series 2021-1 Class B-2
Effects of Reinsurance [Line Items]
Limit	90
Reinsurance Contract [Axis]: Series 2021-1 Class C-1
Effects of Reinsurance [Line Items]
Limit	85
Reinsurance Contract [Axis]: Series 2021-1 Class C-2
Effects of Reinsurance [Line Items]
Limit	90
Reinsurance Contract [Axis]: Series 2022-1 Class A
Effects of Reinsurance [Line Items]
Limit	300
Reinsurance Contract [Axis]: Series 2024-1 Class A
Effects of Reinsurance [Line Items]
Limit	75
Reinsurance Contract [Axis]: Series 2024-1 Class B
Effects of Reinsurance [Line Items]
Limit	$ 125

X

- Definition

Amount of written premiums ceded to other entities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

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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

No definition available.

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