SEGMENT REPORTING (Tables)

3 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Schedule of Reconciliation of Third Party Revenues to Direct Revenues

The following table reconciles third-party revenues to direct revenues for the three months ended March 31, 2023 and 2022 (in thousands):

	For the Three Months Ended						For the Three Months Ended
	March 31, 2023						March 31, 2022
	Third-Party Revenues		Intersegment Revenues (Expenses), net		Direct Revenues		Third-Party Revenues		Intersegment Revenues (Expenses), net		Direct Revenues
Environmental Services	$	1,060,982	$	9,759	$	1,070,741	$	940,798	$	6,647	$	947,445
Safety-Kleen Sustainability Solutions	246,298		(9,759)		236,539		228,239		(6,647)		221,592
Corporate Items	107		—		107		72		—		72
Total	$	1,307,387	$	—	$	1,307,387	$	1,169,109	$	—	$	1,169,109

Schedule of Reconciliation to Consolidated Statements of Income to Adjusted EBITDA

The following table presents Adjusted EBITDA information used by management by reported segment (in thousands):

	For the Three Months Ended
	March 31,
	2023		2022
Adjusted EBITDA:
Environmental Services	$	228,345	$	183,602
Safety-Kleen Sustainability Solutions	41,463		51,877
Corporate Items	(54,670)		(55,220)
Total	215,138		180,259
Reconciliation to Consolidated Statements of Operations:
Accretion of environmental liabilities	3,407		3,156
Stock-based compensation	6,018		5,712
Depreciation and amortization	84,758		84,298
Income from operations	120,955		87,093
Other income, net	(116)		(704)
Loss on early extinguishment of debt	2,362		—
Interest expense, net of interest income	20,632		25,017
Income before provision for income taxes	$	98,077	$	62,780