INVESTMENTS - Schedule of Components of Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 412,249	$ 395,536
Investment expenses	(6,896)	(4,761)
Net investment income	405,353	390,775
Fixed maturity investments trading
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	284,723	257,289
Short term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	41,029	46,791
Fixed income exchange traded funds
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	1,184	0
Other equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	726	560
Catastrophe bonds
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	54,754	58,249
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	18,723	17,925
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 11,110	$ 14,722

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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