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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