Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows provided by operating activities
Net income	$ 344,074	$ 346,624
Adjustments to reconcile net income to net cash provided by operating activities
Amortization, accretion and depreciation	24,741	11,499
Equity in undistributed earnings of other ventures	(7,262)	20,304
Net realized and unrealized losses (gains) on investments	100,045	(101,486)
Net unrealized gains included in net investment income	(8,714)	(12,491)
Change in:
Premiums receivable	(655,025)	(546,510)
Prepaid reinsurance premiums	(391,955)	(264,062)
Reinsurance recoverable	131,639	(91,022)
Deferred acquisition costs	(84,604)	(94,781)
Reserve for claims and claim expenses	(378,063)	141,512
Unearned premiums	789,841	615,633
Reinsurance balances payable	1,095,944	378,511
Other	(611,550)	(82,708)
Net cash provided by operating activities	349,111	321,023
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	4,813,208	5,163,972
Purchases of fixed maturity investments trading	(5,014,011)	(5,451,362)
Net (purchases) sales of equity investments trading	(34,298)	46,305
Net (purchases) sales of short term investments	(1,062,422)	276,075
Net (purchases) sales of other investments	(111,921)	2,551
Net purchases of investments in other ventures	(20,952)	0
Return of investment from investment in other ventures	8,464	20,000
Net cash (used in) provided by investing activities	(1,421,932)	57,541
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(26,468)	(25,877)
Dividends paid – preference shares	(11,191)	(11,191)
RenaissanceRe common share repurchases	0	(145,940)
Issuance of debt, net of expenses	0	295,866
Repayment of debt	0	(250,000)
Issuance of preference shares, net of expenses	242,371	0
Net third party redeemable noncontrolling interest share transactions	64,534	(33,655)
Taxes paid on withholding shares	(7,044)	(11,251)
Net cash provided by (used in) financing activities	262,202	(182,048)
Effect of exchange rate changes on foreign currency cash	(2,501)	5,477
Net (decrease) increase in cash and cash equivalents	(813,120)	201,993
Cash and cash equivalents, beginning of period	1,361,592	421,157
Cash and cash equivalents, end of period	$ 548,472	$ 623,150