Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Gross premiums written	$ 2,651,621	$ 2,464,639	$ 5,441,882	$ 5,407,603
Net premiums written	2,195,803	1,863,616	4,459,506	4,028,833
Decrease (increase) in unearned premiums	(410,541)	(407,233)	(993,694)	(1,086,025)
Net premiums earned	1,785,262	1,456,383	3,465,812	2,942,808
Net investment income	292,662	107,211	547,040	190,902
Net foreign exchange gains (losses)	(13,488)	(50,821)	(27,991)	(66,307)
Equity in earnings (losses) of other ventures	7,700	7,383	17,230	993
Other income (loss)	3,876	923	(430)	2,116
Net realized and unrealized gains (losses) on investments	(222,781)	(654,107)	56,670	(1,327,124)
Total revenues	1,853,231	866,972	4,058,331	1,743,388
Expenses
Net claims and claim expenses incurred	931,211	706,239	1,732,411	1,547,972
Acquisition expenses	422,545	361,238	854,802	737,745
Operational expenses	80,491	72,520	157,965	140,427
Corporate expenses	23,371	12,352	36,214	24,854
Interest expense	14,895	11,895	27,029	23,850
Total expenses	1,472,513	1,164,244	2,808,421	2,474,848
Income (loss) before taxes	380,718	(297,272)	1,249,910	(731,460)
Income tax benefit (expense)	(5,942)	30,534	(34,844)	67,241
Net income (loss)	374,776	(266,738)	1,215,066	(664,219)
Net (income) loss attributable to redeemable noncontrolling interests	(174,907)	(49,331)	(442,291)	(37,419)
Net income (loss) attributable to RenaissanceRe	199,869	(316,069)	772,775	(701,638)
Dividends on preference shares	(8,844)	(8,844)	(17,688)	(17,688)
Net income (loss) available (attributable) to RenaissanceRe common shareholders	$ 191,025	$ (324,913)	$ 755,087	$ (719,326)
Net income (loss) available (attributable) to RenaissanceRe common shareholders per common share – basic (in dollars per share)	$ 4.10	$ (7.53)	$ 16.75	$ (16.64)
Net income (loss) available (attributable) to RenaissanceRe common shareholders per common share – diluted (in dollars per share)	4.09	(7.53)	16.71	(16.64)
Dividends per common share (in dollars per share)	$ 0.38	$ 0.37	$ 0.76	$ 0.74