Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows provided by (used in) operating activities
Net income	$ 350,737	$ 304,096
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Amortization, accretion and depreciation	11,036	12,395
Equity in undistributed earnings of other ventures	(2,308)	(6,822)
Net realized and unrealized gains on investments	(131,425)	(15,037)
Net unrealized losses (gains) included in net investment income	20,360	(3,238)
Net unrealized losses included in other income	0	348
Change in:
Premiums receivable	(554,658)	(396,091)
Prepaid reinsurance premiums	(302,421)	(173,970)
Reinsurance recoverable	(87,480)	(66,042)
Deferred acquisition costs	(131,772)	(63,269)
Reserve for claims and claim expenses	77,198	37,293
Unearned premiums	629,004	410,534
Reinsurance balances payable	229,725	52,969
Other	9,176	(122,536)
Net cash provided by (used in) operating activities	117,172	(29,370)
Cash flows provided by (used in) investing activities
Proceeds from sales and maturities of fixed maturity investments trading	4,780,406	4,761,975
Purchases of fixed maturity investments trading	(4,984,820)	(4,596,118)
Proceeds from sales and maturities of fixed maturity investments available for sale	5,216	5,000
Net sales (purchases) of equity investments trading	181,634	(166,485)
Net sales of short term investments	245,899	360,162
Net purchases of other investments	(52,778)	(1,250)
Net purchases of investments in other ventures	0	(45)
Net sales of other assets	0	4,500
Net purchase of Platinum	0	(678,152)
Net cash provided by (used in) investing activities	175,557	(310,413)
Cash flows (used in) provided by financing activities
Dividends paid – RenaissanceRe common shares	(26,198)	(27,479)
Dividends paid – preference shares	(11,191)	(11,191)
RenaissanceRe common share repurchases	(265,003)	(736)
Issuance of debt, net of expenses	0	445,589
Net third party redeemable noncontrolling interest share transactions	(43,909)	(187,064)
Net cash (used in) provided by financing activities	(346,301)	219,119
Effect of exchange rate changes on foreign currency cash	2,208	(6,830)
Net decrease in cash and cash equivalents	(51,364)	(127,494)
Cash and cash equivalents, beginning of period	506,885	525,584
Cash and cash equivalents, end of period	$ 455,521	$ 398,090