Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting, Measurement Disclosures [Abstract]

Schedule of Significant Components of the Company's Revenues and Expenses by Segment

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

Three months ended March 31, 2020	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,220,526		$	805,195		$	—		$	2,025,721
Net premiums written	$	674,581		$	595,227		$	—		$	1,269,808
Net premiums earned	$	421,335		$	491,763		$	—		$	913,098
Net claims and claim expenses incurred	144,852			426,209			(107		)	570,954
Acquisition expenses	85,351			125,253			—			210,604
Operational expenses	44,007			23,454			—			67,461
Underwriting income (loss)	$	147,125		$	(83,153	)	$	107		64,079
Net investment income							99,473			99,473
Net foreign exchange losses							(5,728		)	(5,728		)
Equity in earnings of other ventures							4,564			4,564
Other loss							(4,436		)	(4,436		)
Net realized and unrealized losses on investments							(110,707		)	(110,707		)
Corporate expenses							(15,991		)	(15,991		)
Interest expense							(14,927		)	(14,927		)
Income before taxes										16,327
Income tax benefit							8,846			8,846
Net income attributable to redeemable noncontrolling interests							(98,091		)	(98,091		)
Dividends on preference shares							(9,056		)	(9,056		)
Net loss attributable to RenaissanceRe common shareholders										$	(81,974	)
Net claims and claim expenses incurred – current accident year	$	130,844		$	426,210		$	—		$	557,054
Net claims and claim expenses incurred – prior accident years	14,008			(1		)	(107		)	13,900
Net claims and claim expenses incurred – total	$	144,852		$	426,209		$	(107	)	$	570,954
Net claims and claim expense ratio – current accident year	31.1		%	86.7		%				61.0		%
Net claims and claim expense ratio – prior accident years	3.3		%	—		%				1.5		%
Net claims and claim expense ratio – calendar year	34.4		%	86.7		%				62.5		%
Underwriting expense ratio	30.7		%	30.2		%				30.5		%
Combined ratio	65.1		%	116.9		%				93.0		%

Three months ended March 31, 2019	Property			Casualty and Specialty			Other			Total
Gross premiums written	$	1,032,384		$	531,911		$	—		$	1,564,295
Net premiums written	$	564,230		$	364,801		$	—		$	929,031
Net premiums earned	$	290,745		$	259,283		$	—		$	550,028
Net claims and claim expenses incurred	56,083			170,933			19			227,035
Acquisition expenses	53,739			70,212			—			123,951
Operational expenses	28,544			16,389			—			44,933
Underwriting income (loss)	$	152,379		$	1,749		$	(19	)	154,109
Net investment income							82,094			82,094
Net foreign exchange losses							(2,846		)	(2,846		)
Equity in earnings of other ventures							4,661			4,661
Other income							3,171			3,171
Net realized and unrealized gains on investments							170,013			170,013
Corporate expenses							(38,789		)	(38,789		)
Interest expense							(11,754		)	(11,754		)
Income before taxes										360,659
Income tax expense							(7,531		)	(7,531		)
Net income attributable to redeemable noncontrolling interests							(70,222		)	(70,222		)
Dividends on preference shares							(9,189		)	(9,189		)
Net income available to RenaissanceRe common shareholders										$	273,717
Net claims and claim expenses incurred – current accident year	$	54,206		$	177,135		$	—		$	231,341
Net claims and claim expenses incurred – prior accident years	1,877			(6,202		)	19			(4,306		)
Net claims and claim expenses incurred – total	$	56,083		$	170,933		$	19		$	227,035
Net claims and claim expense ratio – current accident year	18.6		%	68.3		%				42.1		%
Net claims and claim expense ratio – prior accident years	0.7		%	(2.4		)%				(0.8		)%
Net claims and claim expense ratio – calendar year	19.3		%	65.9		%				41.3		%
Underwriting expense ratio	28.3		%	33.4		%				30.7		%
Combined ratio	47.6		%	99.3		%				72.0		%