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NONCONTROLLING INTERESTS - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
DaVinci Reinsurance Ltd.
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests			$ 300,000,000.0	$ 275,000,000.0
Third-Party Investors
Redeemable Noncontrolling Interest [Line Items]
Redemption of shares from redeemable noncontrolling interest			201,100,000	$ 77,500,000
DaVinci Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Payments to noncontrolling interests			381,700,000
Proceeds from noncontrolling interests			0
Medici
Redeemable Noncontrolling Interest [Line Items]
Payments to noncontrolling interests			200,900,000
Proceeds from noncontrolling interests			92,400,000
Fontana Third Party Investors
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests			50,000,000.0
Proceeds from noncontrolling interests			$ 0
DaVinci Reinsurance Ltd.
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling ownership percentage	24.70%	26.30%	24.70%	26.30%	27.80%
Medici
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling ownership percentage	12.40%	11.10%	12.40%	11.10%
Fontana
Redeemable Noncontrolling Interest [Line Items]
Noncontrolling ownership percentage	26.50%	31.60%	26.50%	31.60%
DaVinci Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests				$ 250,000,000.0
Redemption of shares from redeemable noncontrolling interest	$ 26,147,000	$ 27,320,000	$ 381,849,000	77,495,000
DaVinci Holdings Ltd. | Third-Party Investors
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests				102,200,000
Payments to noncontrolling interests			180,600,000
DaVinci Holdings Ltd. | RenaissanceRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests				147,800,000
Payments to noncontrolling interests			$ 69,400,000
DaVinci Holdings Ltd. | Maximum
Redeemable Noncontrolling Interest [Line Items]
Share repurchase requests, limit	25.00%		25.00%
Medici
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests	$ 21,479,000	170,589,000	$ 167,721,000	414,691,000
Redemption of shares from redeemable noncontrolling interest	$ 181,983,000	0	$ 227,550,000	17,648,000
Redemption provision, notice period			30 days
Medici | Third-Party Investors
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests			$ 167,200,000	439,700,000
Redemption of shares from redeemable noncontrolling interest			227,300,000
Payments of dividends			$ 18,400,000
Medici | RenaissanceRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests				25,100,000
Medici | Vermeer | Voting, Non-participating Shares
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest	100.00%		100.00%
Vermeer
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests			$ 0	0
Vermeer | PFZW
Redeemable Noncontrolling Interest [Line Items]
Payments of dividends			$ 175,000,000.0
PFZW | Vermeer | Participating, Non-voting Common Shares
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest	100.00%		100.00%
Fontana
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests	$ 0	$ 0	$ 100,000,000	0
Redemption of shares from redeemable noncontrolling interest				$ 0
Fontana | Third-Party Investors
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests			100,000,000.0
Fontana | RenaissanceRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Sale of shares to redeemable noncontrolling interests			$ 50,000,000.0

X

- Definition

This item limits the aggregate of all share repurchase requests to 25% of DaVinciRe's capital in any given year and satisfying all applicable regulatory requirements. If total shareholder requests exceed 25% of DaVinciRe's capital, the number of shares repurchased will be reduced among the requesting shareholders pro-rata, based on the amounts desired to be repurchased.

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