Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting, Measurement Disclosures [Abstract]

Schedule Of Significant Components Of The Company's Revenues And Expenses

A summary of the significant components of the Company’s revenues and expenses is as follows:

Year ended December 31, 2016	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,111,263		$	1,263,313		$	—		$	2,374,576
Net premiums written	$	725,321		$	809,848		$	143		$	1,535,312
Net premiums earned	$	720,951		$	682,337		$	142		$	1,403,430
Net claims and claim expenses incurred	151,545			380,396			(1,110		)	530,831
Acquisition expenses	97,594			191,729			—			289,323
Operational expenses	108,642			88,984			123			197,749
Underwriting income	$	363,170		$	21,228		$	1,129		385,527
Net investment income							181,726			181,726
Net foreign exchange losses							(13,788		)	(13,788		)
Equity in earnings of other ventures							963			963
Other income							14,178			14,178
Net realized and unrealized gains on investments							141,328			141,328
Corporate expenses							(37,402		)	(37,402		)
Interest expense							(42,144		)	(42,144		)
Income before taxes and redeemable noncontrolling interests										630,388
Income tax expense							(340		)	(340		)
Net income attributable to redeemable noncontrolling interests							(127,086		)	(127,086		)
Dividends on preference shares							(22,381		)	(22,381		)
Net income available to RenaissanceRe common shareholders										$	480,581
Net claims and claim expenses incurred – current accident year	$	256,421		$	438,536		$	—		$	694,957
Net claims and claim expenses incurred – prior accident years	(104,876		)	(58,140		)	(1,110		)	(164,126		)
Net claims and claim expenses incurred – total	$	151,545		$	380,396		$	(1,110	)	$	530,831
Net claims and claim expense ratio – current accident year	35.6		%	64.3		%				49.5		%
Net claims and claim expense ratio – prior accident years	(14.6		)%	(8.6		)%				(11.7		)%
Net claims and claim expense ratio – calendar year	21.0		%	55.7		%				37.8		%
Underwriting expense ratio	28.6		%	41.2		%				34.7		%
Combined ratio	49.6		%	96.9		%				72.5		%

Year ended December 31, 2015	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,072,159		$	939,241		$	(90	)	$	2,011,310
Net premiums written	$	726,145		$	690,086		$	(48	)	$	1,416,183
Net premiums earned	$	805,985		$	594,614		$	(48	)	$	1,400,551
Net claims and claim expenses incurred	128,290			320,818			(870		)	448,238
Acquisition expenses	94,249			144,095			248			238,592
Operational expenses	118,666			100,180			266			219,112
Underwriting income	$	464,780		$	29,521		$	308		494,609
Net investment income							152,567			152,567
Net foreign exchange losses							(3,051		)	(3,051		)
Equity in earnings of other ventures							20,481			20,481
Other income							13,472			13,472
Net realized and unrealized losses on investments							(68,918		)	(68,918		)
Corporate expenses							(76,514		)	(76,514		)
Interest expense							(36,270		)	(36,270		)
Income before taxes and redeemable noncontrolling interests										496,376
Income tax benefit							45,866			45,866
Net income attributable to redeemable noncontrolling interests							(111,050		)	(111,050		)
Dividends on preference shares							(22,381		)	(22,381		)
Net income available to RenaissanceRe common shareholders										$	408,811
Net claims and claim expenses incurred – current accident year	$	222,076		$	388,609		$	—		$	610,685
Net claims and claim expenses incurred – prior accident years	(93,786		)	(67,791		)	(870		)	(162,447		)
Net claims and claim expenses incurred – total	$	128,290		$	320,818		$	(870	)	$	448,238
Net claims and claim expense ratio – current accident year	27.6		%	65.4		%				43.6		%
Net claims and claim expense ratio – prior accident years	(11.7		)%	(11.4		)%				(11.6		)%
Net claims and claim expense ratio – calendar year	15.9		%	54.0		%				32.0		%
Underwriting expense ratio	26.4		%	41.0		%				32.7		%
Combined ratio	42.3		%	95.0		%				64.7		%

Year ended December 31, 2014	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,074,890		$	475,373		$	309		$	1,550,572
Net premiums written	$	662,552		$	405,340		$	344		$	1,068,236
Net premiums earned	$	698,416		$	363,632		$	368		$	1,062,416
Net claims and claim expenses incurred	16,643			187,441			(6,137		)	197,947
Acquisition expenses	66,262			84,762			(6,548		)	144,476
Operational expenses	117,943			72,393			303			190,639
Underwriting income	$	497,568		$	19,036		$	12,750		529,354
Net investment income							124,316			124,316
Net foreign exchange gains							6,260			6,260
Equity in earnings of other ventures							26,075			26,075
Other loss							(423		)	(423		)
Net realized and unrealized gains on investments							41,433			41,433
Corporate expenses							(22,749		)	(22,749		)
Interest expense							(17,402		)	(17,402		)
Income before taxes and redeemable noncontrolling interests										686,864
Income tax expense							(608		)	(608		)
Net income attributable to redeemable noncontrolling interests							(153,538		)	(153,538		)
Dividends on preference shares							(22,381		)	(22,381		)
Net income available to RenaissanceRe common shareholders										$	510,337
Net claims and claim expenses incurred – current accident year	$	103,901		$	237,844		$	—		$	341,745
Net claims and claim expenses incurred – prior accident years	(87,258		)	(50,403		)	(6,137		)	(143,798		)
Net claims and claim expenses incurred – total	$	16,643		$	187,441		$	(6,137	)	$	197,947
Net claims and claim expense ratio – current accident year	14.9		%	65.4		%				32.2		%
Net claims and claim expense ratio – prior accident years	(12.5		)%	(13.9		)%				(13.6		)%
Net claims and claim expense ratio – calendar year	2.4		%	51.5		%				18.6		%
Underwriting expense ratio	26.4		%	43.3		%				31.6		%
Combined ratio	28.8		%	94.8		%				50.2		%

Schedule of Gross Premiums Written Allocated to the Territory of Coverage Exposure

The following is a summary of the Company’s gross premiums written allocated to the territory of coverage exposure:

Year ended December 31,	2016		2015			2014
Property
U.S. and Caribbean	$	743,226	$	671,887		$	635,069
Worldwide	210,168		234,801			210,441
Worldwide (excluding U.S.) (1)	55,043		76,370			137,466
Japan	44,536		32,830			33,967
Europe	37,611		32,973			33,115
Australia and New Zealand	13,729		15,869			22,746
Other	6,950		7,429			2,086
Total Property	1,111,263		1,072,159			1,074,890
Casualty and Specialty
U.S. and Caribbean	757,052		522,778			228,062
Worldwide	471,301		320,452			226,652
Worldwide (excluding U.S.) (1)	13,840		87,597			6,946
Europe	5,541		936			238
Australia and New Zealand	5,073		1,627			7,865
Other	10,506		5,851			5,610
Total Casualty and Specialty	1,263,313		939,241			475,373
Other category	—		(90		)	309
Total gross premiums written	$	2,374,576	$	2,011,310		$	1,550,572

(1) The category “Worldwide (excluding U.S.)” consists of contracts that cover more than one geographic region (other than the U.S.).