ACQUISITION OF VALIDUS - Schedule of Financial Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Total revenues	$ 9,134,608	$ 5,060,412	$ 5,277,709
Net income (loss) available (attributable) to RenaissanceRe common shareholders	2,525,757	$ (1,096,578)	$ (73,421)
Validus
Business Acquisition [Line Items]
Total revenues	696,888
Net income (loss) available (attributable) to RenaissanceRe common shareholders	307,802
Corporate expenses associated with the acquisition	$ 76,400