REMEDIAL LIABILITIES - Changes in Remedial Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
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	$ 111,243	$ 116,290
Accretion	3,898	4,190
Changes in estimates recorded to consolidated statement of operations	4,364	3,628
Environmental expenditures	(11,846)	(13,276)
Currency translation and other	(1,106)	411
Liabilities assumed in acquisitions	5,192
Balance at the end of the period	111,745	111,243
Remedial Liabilities for Landfill Sites
Changes to remedial liabilities
Balance at the beginning of the period	1,880	1,824
Accretion	92	89
Changes in estimates recorded to consolidated statement of operations	29	19
Environmental expenditures	(53)	(52)
Currency translation and other	0	0
Liabilities assumed in acquisitions	0
Balance at the end of the period	1,948	1,880
Remedial Liabilities for Inactive Sites
Changes to remedial liabilities
Balance at the beginning of the period	60,277	59,749
Accretion	2,292	2,540
Changes in estimates recorded to consolidated statement of operations	573	1,713
Environmental expenditures	(6,078)	(3,840)
Currency translation and other	(28)	115
Liabilities assumed in acquisitions	0
Balance at the end of the period	57,036	60,277
Remedial Liabilities (Including Superfund) for Non-Landfill Operations
Changes to remedial liabilities
Balance at the beginning of the period	49,086	54,717
Accretion	1,514	1,561
Changes in estimates recorded to consolidated statement of operations	3,762	1,896
Environmental expenditures	(5,715)	(9,384)
Currency translation and other	(1,078)	296
Liabilities assumed in acquisitions	5,192
Balance at the end of the period	$ 52,761	$ 49,086