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Investments - Schedule of Net Investment Income (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Net Investment Income [Line Items] |  |  |
Gross investment income | $ 1,276,012 | $ 581,549 | $ 340,229
Investment expenses | (22,902) | (21,617) | (20,750)
Net investment income | 1,253,110 | 559,932 | 319,479
Fixed maturity investments trading |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | 744,457 | 382,165 | 234,911
Short term investments |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | 213,303 | 41,042 | 2,333
Equity investments |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | 7,261 | 20,864 | 9,017
Catastrophe bonds |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | 200,572 | 94,784 | 64,860
Other |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | 87,296 | 37,497 | 28,811
Cash and cash equivalents |  |  |
Net Investment Income [Line Items] |  |  |
Gross investment income | $ 23,123 | $ 5,197 | $ 297

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- Definition Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480167/946-830-55-10 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1 + Details
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