REVENUE - Net Revenue Earned by Category of Payer (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Net revenue	$ 4,302,324	$ 3,944,735	$ 3,438,640
Commercial payers
Disaggregation of Revenue [Line Items]
Net revenue	3,747,568	3,421,888	2,971,900
Government payers
Disaggregation of Revenue [Line Items]
Net revenue	500,891	477,818	417,088
Patients
Disaggregation of Revenue [Line Items]
Net revenue	$ 53,865	$ 45,029	$ 49,652