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DEBT AND CREDIT FACILITIES - Schedule of Carrying Values and Estimated Fair Values of Debt Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Jun. 05, 2023	Apr. 02, 2019	Jun. 29, 2017	May 04, 2015	Mar. 24, 2015
Debt Instrument [Line Items]
Long-term debt	$ 1,900,000	$ 1,900,000
Fair Value
Debt Instrument [Line Items]
Long-term debt	1,871,492	1,929,052
Carrying Value
Debt Instrument [Line Items]
Long-term debt	$ 1,886,689	1,958,655
3.600% Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate	3.60%			3.60%
3.450% Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate	3.45%				3.45%
3.700% Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate	3.70%						3.70%
DaVinci | 4.750% Senior Notes due 2025 (DaVinci)
Debt Instrument [Line Items]
Interest rate	4.75%					4.75%
Senior Notes | 5.750% Senior Notes due 2033
Debt Instrument [Line Items]
Interest rate	5.75%		5.75%
Senior Notes | RenaissanceRe Finance, Inc. | 5.750% Senior Notes due 2033 | Fair Value
Debt Instrument [Line Items]
Long-term debt	$ 755,693	758,783
Senior Notes | RenaissanceRe Finance, Inc. | 5.750% Senior Notes due 2033 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	742,068	741,124
Senior Notes | RenaissanceRe Finance, Inc. | 3.600% Senior Notes due 2029 | Fair Value
Debt Instrument [Line Items]
Long-term debt	376,816	371,276
Senior Notes | RenaissanceRe Finance, Inc. | 3.600% Senior Notes due 2029 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	396,051	395,137
Senior Notes | RenaissanceRe Finance, Inc. | 3.450% Senior Notes due 2027 | Fair Value
Debt Instrument [Line Items]
Long-term debt	290,070	283,350
Senior Notes | RenaissanceRe Finance, Inc. | 3.450% Senior Notes due 2027 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	298,765	298,270
Senior Notes | RenaissanceRe Finance, Inc. | 3.700% Senior Notes due 2025 | Fair Value
Debt Instrument [Line Items]
Long-term debt	299,550	293,154
Senior Notes | RenaissanceRe Finance, Inc. | 3.700% Senior Notes due 2025 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	299,908	299,537
Senior Notes | DaVinci | Fair Value
Debt Instrument [Line Items]
Long-term debt	1,871,492	1,854,052
Senior Notes | DaVinci | Carrying Value
Debt Instrument [Line Items]
Long-term debt	1,886,689	1,883,655
Senior Notes | DaVinci | 4.750% Senior Notes due 2025 (DaVinci) | Fair Value
Debt Instrument [Line Items]
Long-term debt	149,363	147,489
Senior Notes | DaVinci | 4.750% Senior Notes due 2025 (DaVinci) | Carrying Value
Debt Instrument [Line Items]
Long-term debt	149,897	149,587
Line of Credit | DaVinci | Fair Value | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	0	75,000
Line of Credit | DaVinci | Carrying Value | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 75,000

X

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Contractual interest rate for funds borrowed, under the debt agreement.

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