Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows provided by operating activities
Net income	$ 132,274	$ 178,181
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Amortization, accretion and depreciation	6,390	8,752
Equity in undistributed losses (earnings) of other ventures	24,818	(415)
Net realized and unrealized gains on investments	(43,373)	(61,653)
Net unrealized (gains) losses included in net investment income	(6,863)	15,362
Change in:
Premiums receivable	(295,952)	(316,107)
Prepaid reinsurance premiums	(186,831)	(214,283)
Reinsurance recoverable	(46,255)	(32,702)
Deferred acquisition costs	(53,356)	(87,911)
Reserve for claims and claim expenses	86,394	44,478
Unearned premiums	364,922	372,352
Reinsurance balances payable	298,283	94,370
Other	(59,412)	(2,062)
Net cash provided by (used in) operating activities	221,039	(1,638)
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	2,682,386	2,540,073
Purchases of fixed maturity investments trading	(3,007,124)	(2,656,283)
Proceeds from sales and maturities of fixed maturity investments available for sale	0	3,662
Net sales of equity investments trading	13,747	119,369
Net sales of short term investments	245,693	134,009
Net sales (purchases) of other investments	36,402	(39,698)
Net cash (used in) provided by investing activities	(28,896)	101,132
Cash flows used in financing activities
Dividends paid – RenaissanceRe common shares	(13,027)	(13,285)
Dividends paid – preference shares	(5,595)	(5,595)
RenaissanceRe common share repurchases	(80,009)	(85,166)
Net third party redeemable noncontrolling interest share transactions	(51,166)	(50,374)
Taxes paid on withholding shares	(11,018)	(8,069)
Net cash used in financing activities	(160,815)	(162,489)
Effect of exchange rate changes on foreign currency cash	1,602	5,259
Net increase (decrease) in cash and cash equivalents	32,930	(57,736)
Cash and cash equivalents, beginning of period	421,157	506,885
Cash and cash equivalents, end of period	$ 454,087	$ 449,149