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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 5,517,281 | $ 5,326,393
Less - accumulated depreciation and amortization | 3,019,681 | 2,878,452
Total property, plant and equipment, net | 2,497,600 | 2,447,941
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 193,380 | 184,191
Asset retirement costs (non-landfill) |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 40,183 | 38,705
Landfill assets |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 271,692 | 258,138
Buildings and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 738,889 | 719,439
Right-of-Use assets, finance leases | 8,000 | 8,000
Vehicles |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 1,563,165 | 1,455,530
Right-of-Use assets, finance leases | 287,300 | 230,500
Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 2,616,154 | 2,600,085
Right-of-Use assets, finance leases | 9,200 | 9,200
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 93,818 | $ 70,305

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