PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,141,585	$ 3,699,416
Less - accumulated depreciation and amortization	2,278,410	2,174,118
Total property, plant and equipment, net	1,863,175	1,525,298
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	165,010	139,776
Asset retirement costs (non-landfill)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	19,105	16,407
Landfill assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	205,873	191,687
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	551,795	509,804
Right-of-use assets, finance leases	8,900	8,900
Camp equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	127,680	159,021
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	912,836	844,026
Right-of-use assets, finance leases	77,700	47,200
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,092,395	1,807,235
Right-of-use assets, finance leases	9,300	9,300
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	6,444	7,082
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 60,447	$ 24,378