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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 5,676,127 | $ 5,591,370
Less - accumulated depreciation and amortization | 3,113,971 | 3,050,303
Total property, plant and equipment, net | 2,562,156 | 2,541,067
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 196,798 | 193,438
Asset retirement costs (non-landfill) |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 40,372 | 40,232
Landfill assets |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 279,889 | 278,700
Buildings and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 756,361 | 753,404
Right-of-Use assets, finance leases | 8,000 | 8,000
Vehicles |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 1,601,305 | 1,583,387
Right-of-Use assets, finance leases | 296,100 | 294,200
Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | 2,682,335 | 2,652,027
Right-of-Use assets, finance leases | 17,400 | 17,400
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 119,067 | $ 90,182

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