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Segment Reporting
 12 Months Ended
Dec. 31, 2023
Segment Reporting, Measurement Disclosures [Abstract]  
Segment Reporting SEGMENT REPORTING
The Company’s reportable segments are defined as follows: (1) Property, which is comprised of catastrophe and other property (re)insurance written on behalf of the Company’s consolidated operating subsidiaries, joint ventures and managed funds, and (2) Casualty and Specialty, which is comprised of casualty and specialty (re)insurance written on behalf of the Company’s consolidated operating subsidiaries, joint ventures and managed funds. In addition to its reportable segments, the Company has an Other category, which primarily includes its investments unit, strategic investments, corporate expenses, capital servicing costs, noncontrolling interests and certain expenses related to acquisitions and dispositions.
The Company does not manage its assets by segment; accordingly, net investment income and total assets are not allocated to the segments.
A summary of the significant components of the Company’s revenues and expenses by segment is as follows:
Year ended December 31, 2023PropertyCasualty and SpecialtyOtherTotal
Gross premiums written$3,562,414 $5,299,952 $— $8,862,366 
Net premiums written$2,967,309 $4,500,504 $— $7,467,813 
Net premiums earned$3,090,792 $4,380,341 $— $7,471,133 
Net claims and claim expenses incurred
799,905 2,773,604 — 3,573,509 
Acquisition expenses600,127 1,274,907 — 1,875,034 
Operational expenses251,433 123,749 — 375,182 
Underwriting income (loss)$1,439,327 $208,081 $— 1,647,408 
Net investment income1,253,110 1,253,110 
Net foreign exchange gains (losses)(41,479)(41,479)
Equity in earnings of other ventures
43,474 43,474 
Other income (loss)(6,152)(6,152)
Net realized and unrealized gains (losses) on investments414,522 414,522 
Corporate expenses(127,642)(127,642)
Interest expense(73,181)(73,181)
Income (loss) before taxes and redeemable noncontrolling interests3,110,060 
Income tax benefit (expense)
510,067 510,067 
Net (income) loss attributable to redeemable noncontrolling interests(1,058,995)(1,058,995)
Dividends on preference shares(35,375)(35,375)
Net income (loss) available (attributable) to RenaissanceRe common shareholders$2,525,757 
Net claims and claim expenses incurred – current accident year
$1,208,810 $2,815,306 $— $4,024,116 
Net claims and claim expenses incurred – prior accident years
(408,905)(41,702)— (450,607)
Net claims and claim expenses incurred – total
$799,905 $2,773,604 $— $3,573,509 
Net claims and claim expense ratio – current accident year
39.1 %64.3 %53.9 %
Net claims and claim expense ratio – prior accident years
(13.2)%(1.0)%(6.1)%
Net claims and claim expense ratio – calendar year
25.9 %63.3 %47.8 %
Underwriting expense ratio27.5 %31.9 %30.1 %
Combined ratio53.4 %95.2 %77.9 %
Year ended December 31, 2022PropertyCasualty and SpecialtyOtherTotal
Gross premiums written$3,734,241 $5,479,299 $— $9,213,540 
Net premiums written$2,847,659 $4,348,501 $— $7,196,160 
Net premiums earned$2,770,227 $3,563,762 $— $6,333,989 
Net claims and claim expenses incurred
2,044,771 2,294,069 — 4,338,840 
Acquisition expenses547,210 1,021,396 — 1,568,606 
Operational expenses194,355 82,336 — 276,691 
Underwriting income (loss)$(16,109)$165,961 $— 149,852 
Net investment income559,932 559,932 
Net foreign exchange gains (losses)(56,909)(56,909)
Equity in earnings of other ventures
11,249 11,249 
Other income (loss)12,636 12,636 
Net realized and unrealized gains (losses) on investments(1,800,485)(1,800,485)
Corporate expenses(46,775)(46,775)
Interest expense(48,335)(48,335)
Income (loss) before taxes and redeemable noncontrolling interests(1,218,835)
Income tax benefit (expense)
59,019 59,019 
Net (income) loss attributable to redeemable noncontrolling interests98,613 98,613 
Dividends on preference shares(35,375)(35,375)
Net income (loss) available (attributable) to RenaissanceRe common shareholders$(1,096,578)
Net claims and claim expenses incurred – current accident year
$2,250,512 $2,335,910 $— $4,586,422 
Net claims and claim expenses incurred – prior accident years
(205,741)(41,841)— (247,582)
Net claims and claim expenses incurred – total
$2,044,771 $2,294,069 $— $4,338,840 
Net claims and claim expense ratio – current accident year
81.2 %65.5 %72.4 %
Net claims and claim expense ratio – prior accident years
(7.4)%(1.1)%(3.9)%
Net claims and claim expense ratio – calendar year
73.8 %64.4 %68.5 %
Underwriting expense ratio26.8 %30.9 %29.2 %
Combined ratio100.6 %95.3 %97.7 %
Year ended December 31, 2021PropertyCasualty and SpecialtyOtherTotal
Gross premiums written$3,958,724 $3,875,074 $— $7,833,798 
Net premiums written$2,868,002 $3,071,373 $— $5,939,375 
Net premiums earned$2,608,298 $2,585,883 $— $5,194,181 
Net claims and claim expenses incurred
2,163,016 1,713,071 — 3,876,087 
Acquisition expenses487,178 727,680 — 1,214,858 
Operational expenses143,608 68,576 — 212,184 
Underwriting income (loss)$(185,504)$76,556 $— (108,948)
Net investment income319,479 319,479 
Net foreign exchange gains (losses)(41,006)(41,006)
Equity in earnings of other ventures
12,309 12,309 
Other income (loss)10,880 10,880 
Net realized and unrealized gains (losses) on investments(218,134)(218,134)
Corporate expenses(41,152)(41,152)
Interest expense(47,536)(47,536)
Income (loss) before taxes and redeemable noncontrolling interests(114,108)
Income tax benefit (expense)
10,668 10,668 
Net (income) loss attributable to redeemable noncontrolling interests63,285 63,285 
Dividends on preference shares(33,266)(33,266)
Net income (loss) available (attributable) to RenaissanceRe common shareholders$(73,421)
Net claims and claim expenses incurred – current accident year
$2,396,389 $1,729,168 $— $4,125,557 
Net claims and claim expenses incurred – prior accident years
(233,373)(16,097)— (249,470)
Net claims and claim expenses incurred – total
$2,163,016 $1,713,071 $— $3,876,087 
Net claims and claim expense ratio – current accident year
91.9 %66.9 %79.4 %
Net claims and claim expense ratio – prior accident years
(9.0)%(0.7)%(4.8)%
Net claims and claim expense ratio – calendar year
82.9 %66.2 %74.6 %
Underwriting expense ratio24.2 %30.8 %27.5 %
Combined ratio107.1 %97.0 %102.1 %
The following is a summary of the Company’s gross premiums written allocated to the territory of coverage exposure:
Year ended December 31,202320222021
Property
U.S. and Caribbean$2,303,013 $2,343,830 $2,257,088 
Worldwide798,623 1,053,369 1,188,737 
Europe163,500 62,998 253,678 
Japan85,823 104,767 114,981 
Worldwide (excluding U.S.) (1)
70,646 37,436 34,742 
Australia and New Zealand70,107 86,080 69,188 
Other70,702 45,761 40,310 
Total Property3,562,414 3,734,241 3,958,724 
Casualty and Specialty
U.S. and Caribbean2,333,096 2,556,466 1,721,663 
Worldwide2,280,687 2,328,030 1,746,450 
Europe197,228 327,831 217,721 
Worldwide (excluding U.S.) (1)
130,334 177,746 108,376 
Australia and New Zealand27,397 35,973 29,001 
Other331,210 53,253 51,863 
Total Casualty and Specialty5,299,952 5,479,299 3,875,074 
Total gross premiums written$8,862,366 $9,213,540 $7,833,798 
(1)The category “Worldwide (excluding U.S.)” consists of contracts that cover more than one geographic region (other than the U.S.).