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REMEDIAL LIABILITIES (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]  
Balance at January 1, 2020 $ 114,173
Accretion 3,260
Changes in estimates recorded to statement of operations 4,561
Expenditures (6,078)
Currency translation and other (349)
Balance at September 30, 2020 115,567
Remedial Liabilities for Landfill Sites  
Accrual for Environmental Loss Contingencies [Roll Forward]  
Balance at January 1, 2020 1,851
Accretion 67
Changes in estimates recorded to statement of operations (14)
Expenditures (46)
Currency translation and other 0
Balance at September 30, 2020 1,858
Remedial Liabilities for Inactive Sites  
Accrual for Environmental Loss Contingencies [Roll Forward]  
Balance at January 1, 2020 61,991
Accretion 1,914
Changes in estimates recorded to statement of operations 3,023
Expenditures (3,278)
Currency translation and other (912)
Balance at September 30, 2020 62,738
Increase of remedial liabilities 3,300
Remedial Liabilities (Including Superfund) for Non-Landfill Operations  
Accrual for Environmental Loss Contingencies [Roll Forward]  
Balance at January 1, 2020 50,331
Accretion 1,279
Changes in estimates recorded to statement of operations 1,552
Expenditures (2,754)
Currency translation and other 563
Balance at September 30, 2020 50,971
Remedial Liabilities for a Superfund site  
Accrual for Environmental Loss Contingencies [Roll Forward]  
Increase of remedial liabilities $ 1,800