OTHER COMPREHENSIVE INCOME (LOSS) - Reclassifications Out of AOCI Into Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification out of accumulated comprehensive income into net income available to common shareholders [Line Items]
Income before income taxes and interest in income (loss) of equity method investments	$ 176,132	$ 28,763	$ 374,332	$ 166,440
Income tax (expense) benefit	(27,558)	4,965	(43,454)	4,942
Net income	150,674	34,778	330,773	183,982
Unrealized gains (losses) on available for sale investments | Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of accumulated comprehensive income into net income available to common shareholders [Line Items]
Other realized gains (losses)	(31,074)	(93,340)	(75,194)	(146,147)
Impairment losses	(9,083)	(473)	(9,083)	(582)
Income before income taxes and interest in income (loss) of equity method investments	(40,157)	(93,813)	(84,277)	(146,729)
Income tax (expense) benefit	3,536	9,449	6,907	17,023
Net income	$ (36,621)	$ (84,364)	$ (77,370)	$ (129,706)