INVESTMENTS - Schedule of Components of Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 429,441	$ 334,787	$ 1,242,350	$ 891,965
Investment expenses	(5,582)	(5,679)	(16,871)	(15,817)
Net investment income	423,859	329,108	1,225,479	876,148
Fixed maturity investments trading
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	289,687	188,781	820,876	514,020
Short term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	46,746	66,722	141,923	149,903
Equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	670	510	1,819	6,675
Catastrophe bonds
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	61,175	54,583	177,860	142,936
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	20,937	20,031	59,525	65,422
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 10,226	$ 4,160	$ 40,347	$ 13,009

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.

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