Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Gross premiums written	$ 1,832,456	$ 1,190,857
Reinsurance premiums ceded	(376,294)	(200,106)
Net premiums written	1,456,162	990,751
Change in unearned premiums	(837,220)	(415,375)
Net premiums earned	618,942	575,376
Net investment income	52,072	40,214
Net realized gains (losses) on investments	2,200	(1,164)
Change in net unrealized (losses) gains on investments	(57,381)	13,348
Income from investment affiliates	13,068	5,188
Other insurance related income and other income	25,540	1,330
Foreign exchange gains	525	1,569
Total revenues	654,966	635,861
Expenses
Losses and loss expenses	321,545	269,585
Policy acquisition costs	116,456	111,628
General and administrative expenses	114,726	87,924
Share compensation expenses	9,729	9,491
Finance expenses	14,263	13,943
Transaction expenses	7,756	0
Total expenses	584,475	492,571
Income before taxes and (income) attributable to AlphaCat investors	70,491	143,290
Tax benefit	6,833	3,549
(Income) attributable to AlphaCat investors	(10,862)	(7,503)
Net income	66,462	139,336
Net (income) attributable to noncontrolling interests	(64,712)	(42,572)
Net income available to Validus	1,750	96,764
Dividends on preferred shares	(5,828)	(2,203)
Net (loss) income (attributable) available to Validus common shareholders	(4,078)	94,561
Comprehensive (loss) income
Net income	66,462	139,336
Other comprehensive income (loss)
Change in foreign currency translation adjustments	1,837	597
Change in minimum pension liability, net of tax	(38)	68
Change in fair value of cash flow hedge	28,763	98
Other comprehensive income (loss)	30,562	763
Comprehensive (income) attributable to noncontrolling interests	(64,712)	(42,572)
Comprehensive income available to Validus	$ 32,312	$ 97,527
Earnings per common share
Basic (loss) earnings per share (attributable) available to Validus common shareholders	$ (0.05)	$ 1.19
(Loss) earnings per diluted share (attributable) available to Validus common shareholders	(0.05)	1.17
Cash dividends declared per common share	$ 0.38	$ 0.38
Weighted average number of common shares and common share equivalents outstanding:
Basic (in shares)	79,325,688	79,133,671
Diluted (in shares)	79,325,688	80,739,142