REVENUE AND ACCOUNTS RECEIVABLE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 1,289,779	$ 1,076,092	$ 3,678,233	$ 3,111,151
Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	100.00%	100.00%	100.00%	100.00%
Total Medicaid and Medicare
Disaggregation of Revenue [Line Items]
Revenue	$ 896,888	$ 755,143	$ 2,560,202	$ 2,207,796
Total Medicaid and Medicare \| Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	69.50%	70.20%	69.60%	71.00%
Medicaid
Disaggregation of Revenue [Line Items]
Revenue	$ 515,157	$ 425,642	$ 1,454,845	$ 1,227,565
Medicaid \| Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	39.90%	39.60%	39.60%	39.50%
Medicare
Disaggregation of Revenue [Line Items]
Revenue	$ 303,281	$ 263,594	$ 882,149	$ 788,046
Medicare \| Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	23.50%	24.50%	24.00%	25.30%
Medicaid — skilled
Disaggregation of Revenue [Line Items]
Revenue	$ 78,450	$ 65,907	$ 223,208	$ 192,185
Medicaid — skilled \| Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	6.10%	6.10%	6.00%	6.20%
Managed care
Disaggregation of Revenue [Line Items]
Revenue	$ 237,978	$ 202,528	$ 694,690	$ 581,654
Managed care \| Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	18.50%	18.80%	18.90%	18.70%
Private and other
Disaggregation of Revenue [Line Items]
Revenue	$ 154,913	$ 118,421	$ 423,341	$ 321,701
Private and other \| Revenue \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
% of Revenue	12.00%	11.00%	11.50%	10.30%