REVENUE AND ACCOUNTS RECEIVABLE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 1,476,835	$ 1,289,779	$ 4,291,635	$ 3,678,233
Total Medicaid and Medicare
Disaggregation of Revenue [Line Items]
Revenue	1,011,790	896,888	2,953,440	2,560,202
Medicaid
Disaggregation of Revenue [Line Items]
Revenue	590,450	515,157	1,700,719	1,454,845
Medicare
Disaggregation of Revenue [Line Items]
Revenue	342,866	303,281	1,018,345	882,149
Medicaid-skilled
Disaggregation of Revenue [Line Items]
Revenue	78,474	78,450	234,376	223,208
Managed care
Disaggregation of Revenue [Line Items]
Revenue	276,484	237,978	802,683	694,690
Private and other
Disaggregation of Revenue [Line Items]
Revenue	$ 188,561	$ 154,913	$ 535,512	$ 423,341
Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%	100.00%
Revenue \| Customer Concentration Risk \| Total Medicaid and Medicare
Disaggregation of Revenue [Line Items]
% of Revenue	68.50%	69.50%	68.80%	69.60%
Revenue \| Customer Concentration Risk \| Medicaid
Disaggregation of Revenue [Line Items]
% of Revenue	40.00%	39.90%	39.60%	39.60%
Revenue \| Customer Concentration Risk \| Medicare
Disaggregation of Revenue [Line Items]
% of Revenue	23.20%	23.50%	23.70%	24.00%
Revenue \| Customer Concentration Risk \| Medicaid-skilled
Disaggregation of Revenue [Line Items]
% of Revenue	5.30%	6.10%	5.50%	6.00%
Revenue \| Customer Concentration Risk \| Managed care
Disaggregation of Revenue [Line Items]
% of Revenue	18.70%	18.50%	18.70%	18.90%
Revenue \| Customer Concentration Risk \| Private and other
Disaggregation of Revenue [Line Items]
% of Revenue	12.80%	12.00%	12.50%	11.50%