REMEDIAL LIABILITIES - Changes in Remedial Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Site Contingency [Line Items]
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of closure, post-closure and remedial liabilities	Current portion of closure, post-closure and remedial liabilities
Changes to remedial liabilities
Balance at the beginning of the period	$ 116,290	$ 111,873
Liabilities assumed in acquisition of real estate		8,092
Measurement period adjustments from prior period acquisition		338
Accretion	4,190	4,191
Changes in estimates recorded to consolidated statement of operations	3,628	1,497
Environmental expenditures	(13,276)	(8,795)
Currency translation and other	411	(906)
Balance at the end of the period	111,243	116,290
Remedial Liabilities for Landfill Sites
Changes to remedial liabilities
Balance at the beginning of the period	1,824	1,780
Liabilities assumed in acquisition of real estate		0
Measurement period adjustments from prior period acquisition		0
Accretion	89	86
Changes in estimates recorded to consolidated statement of operations	19	8
Environmental expenditures	(52)	(50)
Currency translation and other	0	0
Balance at the end of the period	1,880	1,824
Remedial Liabilities for Inactive Sites
Changes to remedial liabilities
Balance at the beginning of the period	59,749	59,787
Liabilities assumed in acquisition of real estate		0
Measurement period adjustments from prior period acquisition		0
Accretion	2,540	2,498
Changes in estimates recorded to consolidated statement of operations	1,713	877
Environmental expenditures	(3,840)	(3,370)
Currency translation and other	115	(43)
Balance at the end of the period	60,277	59,749
Remedial Liabilities (Including Superfund) for Non-Landfill Operations
Changes to remedial liabilities
Balance at the beginning of the period	54,717	50,306
Liabilities assumed in acquisition of real estate		8,092
Measurement period adjustments from prior period acquisition		338
Accretion	1,561	1,607
Changes in estimates recorded to consolidated statement of operations	1,896	612
Environmental expenditures	(9,384)	(5,375)
Currency translation and other	296	(863)
Balance at the end of the period	$ 49,086	$ 54,717