Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows provided by operating activities
Net (loss) income	$ (356,870)	$ 538,798
Adjustments to reconcile net (loss) income to net cash provided by operating activities
Amortization, accretion and depreciation	18,586	18,343
Equity in undistributed losses of other ventures	19,559	10,173
Net realized and unrealized gains on investments	(143,538)	(191,295)
Net unrealized (gains) losses included in net investment income	(2,686)	17,608
Change in:
Premiums receivable	(533,943)	(403,322)
Prepaid reinsurance premiums	(194,496)	(280,750)
Reinsurance recoverable	(1,308,740)	(106,243)
Deferred acquisition costs	(99,589)	(152,461)
Reserve for claims and claim expenses	2,344,019	94,054
Unearned premiums	481,496	545,034
Reinsurance balances payable	360,471	250,686
Other	37,433	39,740
Net cash provided by operating activities	621,702	380,365
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	7,663,002	6,509,019
Purchases of fixed maturity investments trading	(7,798,285)	(6,744,838)
Proceeds from sales and maturities of fixed maturity investments available for sale	0	5,931
Net sales of equity investments trading	61,571	183,112
Net (purchases) sales of short term investments	(146,326)	128,869
Net sales (purchases) of other investments	5,181	(56,765)
Net sales of other assets	0	400
Net cash (used in) provided by investing activities	(214,857)	25,728
Cash flows used in financing activities
Dividends paid – RenaissanceRe common shares	(38,624)	(38,886)
Dividends paid – preference shares	(16,786)	(16,786)
RenaissanceRe common share repurchases	(188,591)	(309,434)
Issuance of debt, net of expenses	295,866	0
Repayment of debt	(250,000)	0
Net third party redeemable noncontrolling interest share transactions	(44,193)	(45,496)
Taxes paid on withholding shares	(13,694)	(10,362)
Net cash used in financing activities	(256,022)	(420,964)
Effect of exchange rate changes on foreign currency cash	9,596	1,316
Net increase (decrease) in cash and cash equivalents	160,419	(13,555)
Cash and cash equivalents, beginning of period	421,157	506,885
Cash and cash equivalents, end of period	$ 581,576	$ 493,330