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Noncontrolling Interests - Schedule of Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests	$ 4,352,797		$ 4,352,797			$ 3,554,053
Net income (loss) attributable to redeemable noncontrolling interest	49,331	$ 113,544	37,419	$ 66,694
DaVinciRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests	1,762,677	1,642,656	1,762,677	1,642,656	$ 1,775,503	1,499,451	$ 1,555,714	$ 1,560,693
Net income (loss) attributable to redeemable noncontrolling interest	58,822	84,266	33,499	44,332
Medici
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests	1,052,560	880,320	1,052,560	880,320	941,912	856,820	737,702	717,999
Net income (loss) attributable to redeemable noncontrolling interest	(26,887)	11,989	(32,174)	(1,454)
Vermeer Reinsurance Ltd.
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests	1,269,417	1,133,443	1,269,417	1,133,443	1,246,480	1,197,782	1,116,154	1,109,627
Net income (loss) attributable to redeemable noncontrolling interest	22,937	17,289	41,635	23,816
Fontana
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests	268,143	0	268,143	0	$ 0	$ 0	$ 0	$ 0
Net income (loss) attributable to redeemable noncontrolling interest	$ (5,541)	$ 0	$ (5,541)	$ 0

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.19)
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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
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