REMEDIAL LIABILITIES - Changes to Remedial Liabilities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 111,243
Accretion	2,919
Changes in estimates recorded to consolidated statement of operations	4,601
Expenditures	(7,823)
Currency translation and other	(282)
Ending balance	110,658
Remedial Liabilities for Landfill Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	1,880
Accretion	69
Changes in estimates recorded to consolidated statement of operations	24
Expenditures	(40)
Currency translation and other	0
Ending balance	1,933
Remedial Liabilities for Inactive Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	60,277
Accretion	1,719
Changes in estimates recorded to consolidated statement of operations	614
Expenditures	(2,944)
Currency translation and other	(11)
Ending balance	59,655
Remedial Liabilities (Including Superfund) for Non-Landfill Operations
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	49,086
Accretion	1,131
Changes in estimates recorded to consolidated statement of operations	3,963
Expenditures	(4,839)
Currency translation and other	(271)
Ending balance	$ 49,070