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Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Comprehensive (loss) income
Net (loss) income	$ (638,872)	$ 74,389	$ (391,716)	$ 801,424
Change in net unrealized gains (losses) on investments, net of tax	6	2,186	(2,827)	41
Foreign currency translation adjustments, net of tax	1,346	(1,203)	2,760	(185)
Comprehensive (loss) income	(637,520)	75,372	(391,783)	801,280
Net loss (income) attributable to redeemable noncontrolling interests	198,495	(19,301)	131,801	(236,120)
Comprehensive loss (income) attributable to redeemable noncontrolling interests	198,495	(19,301)	131,801	(236,120)
Comprehensive (loss) income attributable to RenaissanceRe	$ (439,025)	$ 56,071	$ (259,982)	$ 565,160

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