REMEDIAL LIABILITIES - Summary of Changes to Remedial Liabilities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	$ 116,290
Accretion	3,165
Changes in estimates recorded to consolidated statement of operations	3,211
Expenditures	(11,007)
Currency translation and other	45
Ending balance	111,704
Remedial Liabilities for Landfill Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	1,824
Accretion	66
Changes in estimates recorded to consolidated statement of operations	13
Expenditures	(39)
Currency translation and other	0
Ending balance	1,864
Remedial Liabilities for Inactive Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	59,749
Accretion	1,918
Changes in estimates recorded to consolidated statement of operations	1,318
Expenditures	(2,896)
Currency translation and other	1
Ending balance	60,090
Remedial Liabilities (Including Superfund) for Non-Landfill Operations
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	54,717
Accretion	1,181
Changes in estimates recorded to consolidated statement of operations	1,880
Expenditures	(8,072)
Currency translation and other	44
Ending balance	$ 49,750