ACQUISITION OF VALIDUS - Schedule of Purchase Price (Details) - Validus - USD ($) $ / shares in Units, $ in Thousands	Nov. 01, 2023	May 22, 2023
Business Acquisition [Line Items]
Common shares issued by RenaissanceRe to AIG (in shares)	1,322,541
Common share price of RenaissanceRe (in usd per share)	$ 215.62
Market value of RenaissanceRe common shares issued by RenaissanceRe to AIG	$ 285,168	$ 250,000
Cash consideration funded by net proceeds from the issuance of common shares of RenaissanceRe to the public market	1,351,608
Cash consideration funded by net proceeds from the issuance of Senior Notes	740,581
Cash consideration funded by available cash resources	642,811
Total cash consideration paid by RenaissanceRe as acquisition consideration	2,735,000
Total purchase price	$ 3,020,168	$ 2,985,000
Discount on closing price	5.00%