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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, 2023	Jun. 05, 2023	Dec. 31, 2022	Apr. 02, 2019	Jun. 29, 2017	May 04, 2015	Mar. 24, 2015
Debt Instrument [Line Items]
Long-term debt	$ 1,900,000		$ 1,100,000
Fair Value
Debt Instrument [Line Items]
Long-term debt	1,929,052		1,110,649
Carrying Value
Debt Instrument [Line Items]
Long-term debt	$ 1,958,655		1,170,442
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 Holdings Ltd. | 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	$ 758,783		0
Senior Notes | RenaissanceRe Finance, Inc. | 5.750% Senior Notes due 2033 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	741,124		0
Senior Notes | RenaissanceRe Finance, Inc. | 3.600% Senior Notes due 2029 | Fair Value
Debt Instrument [Line Items]
Long-term debt	371,276		362,644
Senior Notes | RenaissanceRe Finance, Inc. | 3.600% Senior Notes due 2029 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	395,137		394,221
Senior Notes | RenaissanceRe Finance, Inc. | 3.450% Senior Notes due 2027 | Fair Value
Debt Instrument [Line Items]
Long-term debt	283,350		280,506
Senior Notes | RenaissanceRe Finance, Inc. | 3.450% Senior Notes due 2027 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	298,270		297,775
Senior Notes | RenaissanceRe Finance, Inc. | 3.700% Senior Notes due 2025 | Fair Value
Debt Instrument [Line Items]
Long-term debt	293,154		290,874
Senior Notes | RenaissanceRe Finance, Inc. | 3.700% Senior Notes due 2025 | Carrying Value
Debt Instrument [Line Items]
Long-term debt	299,537		299,168
Senior Notes | DaVinci Holdings Ltd. | Fair Value
Debt Instrument [Line Items]
Long-term debt	1,854,052		1,080,649
Senior Notes | DaVinci Holdings Ltd. | Carrying Value
Debt Instrument [Line Items]
Long-term debt	1,883,655		1,140,442
Senior Notes | DaVinci Holdings Ltd. | 4.750% Senior Notes due 2025 (DaVinci) | Fair Value
Debt Instrument [Line Items]
Long-term debt	147,489		146,625
Senior Notes | DaVinci Holdings Ltd. | 4.750% Senior Notes due 2025 (DaVinci) | Carrying Value
Debt Instrument [Line Items]
Long-term debt	149,587		149,278
Line of Credit | DaVinci Holdings Ltd. | Fair Value
Debt Instrument [Line Items]
Long-term debt	75,000		30,000
Line of Credit | DaVinci Holdings Ltd. | Carrying Value
Debt Instrument [Line Items]
Long-term debt	$ 75,000		$ 30,000

X

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

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