INVESTMENTS - Schedule of Net Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 297,663	$ 112,494	$ 557,178	$ 201,672
Investment expenses	(5,001)	(5,283)	(10,138)	(10,770)
Net investment income	292,662	107,211	547,040	190,902
Fixed maturity investments trading
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	169,739	76,547	325,239	138,964
Short term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	50,231	4,397	83,181	5,533
Equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	2,766	4,516	6,165	7,270
Catastrophe bonds
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	49,522	20,235	88,353	37,595
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	20,820	6,894	45,391	12,446
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 4,585	$ (95)	$ 8,849	$ (136)