INSURANCE INTANGIBLES, UNEARNED REVENUE RESERVES AND UNEARNED FRONT-END LOADS - Value of Business Acquired Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Movement In Value Of Business Acquired Liability [Roll Forward]
Balance, as of the Beginning of the Period	$ 867,932	$ 1,004,124
Amortization Expense	(53,583)	(68,194)
Balance, as of the End of the Period	814,349	935,930
Fixed Rate Annuities
Movement In Value Of Business Acquired Liability [Roll Forward]
Balance, as of the Beginning of the Period	65,966	98,342
Amortization Expense	(12,567)	(16,799)
Balance, as of the End of the Period	53,399	81,543
Fixed Indexed Annuities
Movement In Value Of Business Acquired Liability [Roll Forward]
Balance, as of the Beginning of the Period	106,538	145,610
Amortization Expense	(17,252)	(19,828)
Balance, as of the End of the Period	89,286	125,782
Interest Sensitive Life
Movement In Value Of Business Acquired Liability [Roll Forward]
Balance, as of the Beginning of the Period	421,213	461,592
Amortization Expense	(13,909)	(17,857)
Balance, as of the End of the Period	407,304	443,735
Variable Annuities
Movement In Value Of Business Acquired Liability [Roll Forward]
Balance, as of the Beginning of the Period	91,295	99,776
Amortization Expense	(3,100)	(4,801)
Balance, as of the End of the Period	88,195	94,975
Other
Movement In Value Of Business Acquired Liability [Roll Forward]
Balance, as of the Beginning of the Period	182,920	198,804
Amortization Expense	(6,755)	(8,909)
Balance, as of the End of the Period	$ 176,165	$ 189,895