REVENUE RECOGNITION - Schedule of Effects of Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Insurance [Abstract]
Direct policy premiums	$ 5,666,469	$ 3,482,764	$ 11,696,744	$ 6,832,435
Risk adjustment transfers	(871,470)	(692,245)	(2,314,281)	(1,065,994)
Reinsurance premiums ceded	(4,989)	(2,690)	(10,607)	(5,232)
Assumed premiums	(679)	15,615	(1,663)	38,056
Premium	$ 4,789,331	$ 2,803,444	$ 9,370,193	$ 5,799,265

Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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+ Details

- Definition

Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

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+ Details