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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 4,296,543 | $ 4,141,585
Less - accumulated depreciation and amortization | 2,383,398 | 2,278,410
Total property, plant and equipment, net | 1,913,145 | 1,863,175
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 174,744 | 165,010
Asset retirement costs (non-landfill) |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 19,598 | 19,105
Landfill assets |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 214,558 | 205,873
Buildings and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 571,078 | 551,795
Right-of-Use assets, finance leases | 8,000 | 8,900
Camp equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 124,672 | 127,680
Vehicles |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 950,754 | 912,836
Right-of-Use assets, finance leases | 85,300 | 77,700
Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 2,136,376 | 2,092,395
Right-of-Use assets, finance leases | 9,300 | 9,300
Furniture and fixtures |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 6,574 | 6,444
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 98,189 | $ 60,447

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