NONCONTROLLING INTERESTS - Schedule of Activity in Redeemable Noncontrolling Interest (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Activity in redeemable noncontrolling interest
Beginning balance			$ 6,100,831,000
Net income (loss) attributable to redeemable noncontrolling interest	$ 224,731,000	$ 174,907,000	469,558,000	$ 442,291,000
Ending balance	6,335,308,000		6,335,308,000
DaVinci Holdings Ltd.
Activity in redeemable noncontrolling interest
Beginning balance	2,634,555,000	2,234,541,000	2,541,482,000	1,740,300,000
Redemption of shares from redeemable noncontrolling interests	(26,147,000)	(27,320,000)	(381,849,000)	(77,495,000)
Sale of shares to redeemable noncontrolling interests				250,000,000.0
Net income (loss) attributable to redeemable noncontrolling interest	152,511,000	59,527,000	300,524,000	225,609,000
Ending balance	2,760,164,000	2,267,448,000	2,760,164,000	2,267,448,000
DaVinci Holdings Ltd. \| Third-Party Investors And RenaissanceRe
Activity in redeemable noncontrolling interest
Sale of shares to redeemable noncontrolling interests, net of adjustments	(755,000)	700,000	300,007,000	379,034,000
Medici
Activity in redeemable noncontrolling interest
Beginning balance	1,778,763,000	1,307,741,000	1,650,229,000	1,036,218,000
Redemption of shares from redeemable noncontrolling interests	(181,983,000)	0	(227,550,000)	(17,648,000)
Sale of shares to redeemable noncontrolling interests	21,479,000	170,589,000	167,721,000	414,691,000
Net income (loss) attributable to redeemable noncontrolling interest	13,249,000	62,190,000	59,518,000	107,259,000
Dividends on common shares	0	0	(18,410,000)	0
Ending balance	1,631,508,000	1,540,520,000	1,631,508,000	1,540,520,000
Vermeer
Activity in redeemable noncontrolling interest
Beginning balance	1,433,268,000	1,538,245,000	1,555,297,000	1,490,840,000
Sale of shares to redeemable noncontrolling interests			0	0
Net income (loss) attributable to redeemable noncontrolling interest	56,624,000	52,163,000	109,595,000	99,568,000
Dividends on common shares	0	0	(175,000,000)	0
Ending balance	1,489,892,000	1,590,408,000	1,489,892,000	1,590,408,000
Fontana
Activity in redeemable noncontrolling interest
Beginning balance	451,397,000	276,859,000	353,823,000	268,031,000
Redemption of shares from redeemable noncontrolling interests				0
Sale of shares to redeemable noncontrolling interests	0	0	100,000,000	0
Net income (loss) attributable to redeemable noncontrolling interest	2,347,000	1,027,000	(79,000)	9,855,000
Ending balance	$ 453,744,000	$ 277,886,000	$ 453,744,000	$ 277,886,000

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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