REVENUE - Net Revenue Earned by Category of Payer (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,069,072	$ 980,820	$ 2,084,920	$ 1,896,604
Commercial payers
Disaggregation of Revenue [Line Items]
Net revenue	934,001	851,915	1,807,912	1,638,192
Government payers
Disaggregation of Revenue [Line Items]
Net revenue	123,737	119,385	246,526	234,590
Patients
Disaggregation of Revenue [Line Items]
Net revenue	$ 11,334	$ 9,520	$ 30,482	$ 23,822