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SEGMENT REPORTING (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Gross premiums written | $ 3,421,180 | $ 3,425,495 | $ 7,576,683 | $ 7,416,179
Net premiums written | 2,770,270 | 2,838,511 | 6,213,799 | 6,038,084
Net premiums earned | 2,412,154 | 2,541,315 | 5,132,935 | 4,985,225
Net claims and claim expenses incurred | 1,042,123 | 1,309,502 | 3,785,881 | 2,475,625
Acquisition expenses | 642,605 | 644,438 | 1,290,040 | 1,275,359
Operational expenses | 125,738 | 108,039 | 225,923 | 214,223
Underwriting income (loss) | 601,688 | 479,336 | (168,909) | 1,020,018
Net investment income | 413,108 | 410,845 | 818,461 | 801,620
Net foreign exchange gains (losses) | 8,660 | (8,815) | 1,332 | (44,498)
Equity in earnings (losses) of other ventures | 20,333 | 12,590 | 38,161 | 26,717
Other income (loss) | 2,624 | 169 | 3,538 | 119
Net realized and unrealized gains (losses) on investments | 349,720 | (127,584) | 682,660 | (341,238)
Corporate expenses | (23,781) | (35,159) | (46,591) | (74,411)
Interest expense | (31,793) | (23,609) | (58,879) | (46,713)
Income (loss) before taxes | 1,340,559 | 707,773 | 1,269,773 | 1,341,614
Income tax benefit (expense) | (176,869) | 20,848 | (131,344) | 5,476
Net (income) loss attributable to redeemable noncontrolling interests | (328,339) | (224,731) | (133,087) | (469,558)
Dividends on preference shares | (8,844) | (8,844) | (17,688) | (17,688)
Net income (loss) available (attributable) to RenaissanceRe common shareholders | 826,507 | 495,046 | 987,654 | 859,844
Net claims and claim expenses incurred – current accident year | 1,311,833 | 1,417,773 | 4,251,465 | 2,680,977
Net claims and claim expenses incurred – prior accident years | (269,710) | (108,271) | (465,584) | (205,352)
Total net incurred | $ 1,042,123 | $ 1,309,502 | $ 3,785,881 | $ 2,475,625
Net claims and claim expense ratio – current accident year | 54.40% | 55.80% | 82.80% | 53.80%
Net claims and claim expense ratio – prior accident years | (11.20%) | (4.30%) | (9.00%) | (4.10%)
Net claims and claim expense ratio – calendar year | 43.20% | 51.50% | 73.80% | 49.70%
Underwriting expense ratio | 31.90% | 29.60% | 29.50% | 29.80%
Combined ratio | 75.10% | 81.10% | 103.30% | 79.50%
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross premiums written | $ 0 | $ 0 | $ 0 | $ 0
Net premiums written | 0 | 0 | 0 | 0
Net premiums earned | 0 | 0 | 0 | 0
Net claims and claim expenses incurred | 0 | 0 | 0 | 0
Acquisition expenses | 0 | 0 | 0 | 0
Operational expenses | 0 | 0 | 0 | 0
Underwriting income (loss) | 0 | 0 | 0 | 0
Net investment income | 413,108 | 410,845 | 818,461 | 801,620
Net foreign exchange gains (losses) | 8,660 | (8,815) | 1,332 | (44,498)
Equity in earnings (losses) of other ventures | 20,333 | 12,590 | 38,161 | 26,717
Other income (loss) | 2,624 | 169 | 3,538 | 119
Net realized and unrealized gains (losses) on investments | 349,720 | (127,584) | 682,660 | (341,238)
Corporate expenses | (23,781) | (35,159) | (46,591) | (74,411)
Interest expense | (31,793) | (23,609) | (58,879) | (46,713)
Income tax benefit (expense) | (176,869) | 20,848 | (131,344) | 5,476
Net (income) loss attributable to redeemable noncontrolling interests | (328,339) | (224,731) | (133,087) | (469,558)
Dividends on preference shares | (8,844) | (8,844) | (17,688) | (17,688)
Net claims and claim expenses incurred – current accident year | 0 | 0 | 0 | 0
Net claims and claim expenses incurred – prior accident years | 0 | 0 | 0 | 0
Total net incurred | 0 | 0 | 0 | 0
Property |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net claims and claim expenses incurred – prior accident years |  |  | (453,634) | (179,058)
Property | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross premiums written | 1,731,935 | 1,753,098 | 3,862,768 | 3,642,979
Net premiums written | 1,325,557 | 1,358,660 | 3,016,551 | 2,756,278
Net premiums earned | 868,010 | 980,834 | 2,115,960 | 1,916,917
Net claims and claim expenses incurred | (7,930) | 273,354 | 1,615,327 | 427,603
Acquisition expenses | 174,200 | 188,345 | 341,845 | 374,127
Operational expenses | 71,569 | 67,425 | 135,835 | 129,049
Underwriting income (loss) | 630,171 | 451,710 | 22,953 | 986,138
Net claims and claim expenses incurred – current accident year | 258,646 | 357,745 | 2,068,961 | 606,661
Net claims and claim expenses incurred – prior accident years | (266,576) | (84,391) | (453,634) | (179,058)
Total net incurred | $ (7,930) | $ 273,354 | $ 1,615,327 | $ 427,603
Net claims and claim expense ratio – current accident year | 29.80% | 36.50% | 97.80% | 31.60%
Net claims and claim expense ratio – prior accident years | (30.70%) | (8.60%) | (21.50%) | (9.30%)
Net claims and claim expense ratio – calendar year | (0.90%) | 27.90% | 76.30% | 22.30%
Underwriting expense ratio | 28.30% | 26.00% | 22.60% | 26.30%
Combined ratio | 27.40% | 53.90% | 98.90% | 48.60%
Casualty and Specialty |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net claims and claim expenses incurred – prior accident years |  |  | $ (11,950) | $ (26,294)
Casualty and Specialty | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Gross premiums written | $ 1,689,245 | $ 1,672,397 | 3,713,915 | 3,773,200
Net premiums written | 1,444,713 | 1,479,851 | 3,197,248 | 3,281,806
Net premiums earned | 1,544,144 | 1,560,481 | 3,016,975 | 3,068,308
Net claims and claim expenses incurred | 1,050,053 | 1,036,148 | 2,170,554 | 2,048,022
Acquisition expenses | 468,405 | 456,093 | 948,195 | 901,232
Operational expenses | 54,169 | 40,614 | 90,088 | 85,174
Underwriting income (loss) | (28,483) | 27,626 | (191,862) | 33,880
Net claims and claim expenses incurred – current accident year | 1,053,187 | 1,060,028 | 2,182,504 | 2,074,316
Net claims and claim expenses incurred – prior accident years | (3,134) | (23,880) | (11,950) | (26,294)
Total net incurred | $ 1,050,053 | $ 1,036,148 | $ 2,170,554 | $ 2,048,022
Net claims and claim expense ratio – current accident year | 68.20% | 67.90% | 72.30% | 67.60%
Net claims and claim expense ratio – prior accident years | (0.20%) | (1.50%) | (0.40%) | (0.90%)
Net claims and claim expense ratio – calendar year | 68.00% | 66.40% | 71.90% | 66.70%
Underwriting expense ratio | 33.80% | 31.80% | 34.50% | 32.20%
Combined ratio | 101.80% | 98.20% | 106.40% | 98.90%

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