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SEGMENT REPORTING (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Segment Reporting Information [Line Items] |  |
Gross premiums written | $ 3,990,684 | $ 2,790,261
Net premiums written | 3,199,573 | 2,263,703
Net premiums earned | 2,443,910 | 1,680,550
Net claims and claim expenses incurred | 1,166,123 | 801,200
Acquisition expenses | 630,921 | 432,257
Operational expenses | 106,184 | 77,474
Underwriting income (loss) | 540,682 | 369,619
Net investment income | 390,775 | 254,378
Net foreign exchange gains (losses) | (35,683) | (14,503)
Equity in earnings of other ventures | 14,127 | 9,530
Other income (loss) | (50) | (4,306)
Net realized and unrealized gains (losses) on investments | (213,654) | 279,451
Corporate expenses | (39,252) | (12,843)
Interest expense | (23,104) | (12,134)
Income (loss) before taxes | 633,841 | 869,192
Income tax benefit (expense) | (15,372) | (28,902)
Net (income) loss attributable to redeemable noncontrolling interests | (244,827) | (267,384)
Dividends on preference shares | (8,844) | (8,844)
Net income (loss) available (attributable) to RenaissanceRe common shareholders | 364,798 | 564,062
Net income (loss) available (attributable) to RenaissanceRe common shareholders, diluted | 364,798 | 564,062
Net claims and claim expenses incurred – current accident year | 1,263,204 | 905,952
Net claims and claim expenses incurred – prior accident years | (97,081) | (104,752)
Total net incurred | $ 1,166,123 | $ 801,200
Net claims and claim expense ratio – current accident year | 51.70% | 53.90%
Net claims and claim expense ratio – prior accident years | (4.00%) | (6.20%)
Net claims and claim expense ratio – calendar year | 47.70% | 47.70%
Underwriting expense ratio | 30.20% | 30.30%
Combined ratio | 77.90% | 78.00%
Other |  |
Segment Reporting Information [Line Items] |  |
Gross premiums written | $ 0 | $ 0
Net premiums written | 0 | 0
Net premiums earned | 0 | 0
Net claims and claim expenses incurred | 0 | 0
Acquisition expenses | 0 | 0
Operational expenses | 0 | 0
Underwriting income (loss) | 0 | 0
Net investment income | 390,775 | 254,378
Net foreign exchange gains (losses) | (35,683) | (14,503)
Equity in earnings of other ventures | 14,127 | 9,530
Other income (loss) | (50) | (4,306)
Net realized and unrealized gains (losses) on investments | (213,654) | 279,451
Corporate expenses | (39,252) | (12,843)
Interest expense | (23,104) | (12,134)
Income tax benefit (expense) | (15,372) | (28,902)
Net (income) loss attributable to redeemable noncontrolling interests | (244,827) | (267,384)
Dividends on preference shares | (8,844) | (8,844)
Net claims and claim expenses incurred – current accident year | 0 | 0
Net claims and claim expenses incurred – prior accident years | 0 | 0
Total net incurred | 0 | 0
Property |  |
Segment Reporting Information [Line Items] |  |
Net claims and claim expenses incurred – prior accident years | (94,667) | (81,693)
Property | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Gross premiums written | 1,889,881 | 1,304,199
Net premiums written | 1,397,618 | 1,019,829
Net premiums earned | 936,083 | 687,420
Net claims and claim expenses incurred | 154,249 | 187,609
Acquisition expenses | 185,782 | 145,319
Operational expenses | 61,624 | 55,813
Underwriting income (loss) | 534,428 | 298,679
Net claims and claim expenses incurred – current accident year | 248,916 | 269,302
Net claims and claim expenses incurred – prior accident years | (94,667) | (81,693)
Total net incurred | $ 154,249 | $ 187,609
Net claims and claim expense ratio – current accident year | 26.60% | 39.20%
Net claims and claim expense ratio – prior accident years | (10.10%) | (11.90%)
Net claims and claim expense ratio – calendar year | 16.50% | 27.30%
Underwriting expense ratio | 26.40% | 29.30%
Combined ratio | 42.90% | 56.60%
Casualty and Specialty |  |
Segment Reporting Information [Line Items] |  |
Net claims and claim expenses incurred – prior accident years | $ (2,414) | $ (23,059)
Casualty and Specialty | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Gross premiums written | 2,100,803 | 1,486,062
Net premiums written | 1,801,955 | 1,243,874
Net premiums earned | 1,507,827 | 993,130
Net claims and claim expenses incurred | 1,011,874 | 613,591
Acquisition expenses | 445,139 | 286,938
Operational expenses | 44,560 | 21,661
Underwriting income (loss) | 6,254 | 70,940
Net claims and claim expenses incurred – current accident year | 1,014,288 | 636,650
Net claims and claim expenses incurred – prior accident years | (2,414) | (23,059)
Total net incurred | $ 1,011,874 | $ 613,591
Net claims and claim expense ratio – current accident year | 67.30% | 64.10%
Net claims and claim expense ratio – prior accident years | (0.20%) | (2.30%)
Net claims and claim expense ratio – calendar year | 67.10% | 61.80%
Underwriting expense ratio | 32.50% | 31.10%
Combined ratio | 99.60% | 92.90%

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