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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