INCOME TAXES - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of federal statutory tax rate with effective tax rate
Federal statutory tax rate	21.00%	21.00%	21.00%
Impact on deferred taxes for changes in tax rates	0.60%	(0.80%)	(0.40%)
State income taxes, net of federal income tax benefit	5.00%	5.80%	5.10%
Foreign rates varying from federal statutory tax rate	1.20%	2.20%	(5.30%)
FMS U.K. business exit	0.00%	1.90%	3.20%
Tax contingencies	(0.80%)	(0.20%)	(0.30%)
Tax credits	(1.20%)	(1.80%)	(0.20%)
Other permanent book-tax differences	0.20%	0.90%	0.60%
Change in foreign valuation allowance	(11.90%)	(0.30%)	5.40%
Foreign net operating loss write-off	11.90%	0.00%	0.00%
Currency translation adjustment	0.00%	5.50%	0.00%
Other	0.00%	0.10%	0.00%
Effective tax rate	26.00%	34.30%	29.10%