Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows provided by (used in) operating activities
Net income (loss)	$ 840,290	$ (397,481)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities
Amortization, accretion and depreciation	(32,948)	(9,337)
Equity in undistributed (earnings) losses of other ventures	5,568	16,069
Net realized and unrealized (gains) losses on investments	(267,289)	632,729
Change in:
Premiums receivable	(794,230)	(1,069,971)
Prepaid reinsurance premiums	(109,419)	(331,260)
Reinsurance recoverable	4,254	(50,821)
Deferred acquisition costs	(70,657)	(150,552)
Reserve for claims and claim expenses	104,253	215,674
Unearned premiums	691,535	1,015,092
Reinsurance balances payable	61,379	458,694
Other	2,972	(160,607)
Net cash provided by (used in) operating activities	435,708	168,229
Cash flows provided by (used in) investing activities
Proceeds from sales and maturities of fixed maturity investments trading	5,019,879	3,958,948
Purchases of fixed maturity investments trading	(5,159,348)	(4,405,789)
Net sales (purchases) of equity investments	104,077	(374,292)
Net sales (purchases) of short term investments	(480,425)	626,639
Net sales (purchases) of other investments	(159,523)	(210,840)
Net sales (purchases) of investments in other ventures	(11,250)	(779)
Return of investment from investment in other ventures	1,893	2,213
Net cash provided by (used in) investing activities	(684,697)	(403,900)
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(16,615)	(16,241)
Dividends paid – preference shares	(8,950)	(8,940)
RenaissanceRe common share repurchases	0	(97,259)
Repayment of debt	(30,000)	0
Net third-party redeemable noncontrolling interest share transactions	190,585	66,729
Taxes paid on withholding shares	(18,729)	(10,782)
Net cash provided by (used in) financing activities	116,291	(66,493)
Effect of exchange rate changes on foreign currency cash	2,066	6,201
Net increase (decrease) in cash and cash equivalents	(130,632)	(295,963)
Cash and cash equivalents, beginning of period	1,194,339	1,859,019
Cash and cash equivalents, end of period	$ 1,063,707	$ 1,563,056