SUBSEQUENT EVENTS (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Apr. 01, 2023	May 03, 2023	Mar. 31, 2023	Mar. 31, 2022	May 01, 2023	Dec. 31, 2022
Subsequent Event | DavinciRe Third-Party Investors
Subsequent Event [Line Items]
Sale of shares to redeemable noncontrolling interests, net of adjustments		$ 155.9
DaVinci Reinsurance Ltd.
Subsequent Event [Line Items]
Parent company ownership in redeemable noncontrolling interest			25.40%	30.90%		30.90%
DaVinci Reinsurance Ltd. | Subsequent Event
Subsequent Event [Line Items]
Parent company ownership in redeemable noncontrolling interest	26.30%
Medici
Subsequent Event [Line Items]
Parent company ownership in redeemable noncontrolling interest			10.80%	13.60%
Medici | Subsequent Event
Subsequent Event [Line Items]
Parent company ownership in redeemable noncontrolling interest					10.40%
Third-Party Investors
Subsequent Event [Line Items]
Redemption of shares from redeemable noncontrolling interest			$ 50.2	$ 87.4
Third-Party Investors | Subsequent Event
Subsequent Event [Line Items]
Redemption of shares from redeemable noncontrolling interest	$ 27.3
Third-Party Investors | Subsequent Event | DavinciRe Third-Party Investors
Subsequent Event [Line Items]
Sale of shares to redeemable noncontrolling interests, net of adjustments		145.9
RenaissanceRe Holdings Ltd. | Subsequent Event | DavinciRe Third-Party Investors
Subsequent Event [Line Items]
Sale of shares to redeemable noncontrolling interests, net of adjustments		$ 10.0