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PROPERTY, PLANT AND EQUIPMENT - Components of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Finance lease right-of-use assets $ 39,683 $ 24,038
Property, plant and equipment and finance lease right-of-use assets, gross 1,411,394 1,288,699
Less: accumulated depreciation and amortization (900,882) (844,874)
Property, plant and equipment and finance lease right-of-use assets, net 510,512 443,825
Land    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 30,061 28,703
Landfills    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 635,144 578,814
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 169,325 161,316
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 178,104 168,735
Rolling stock    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 204,333 183,145
Containers    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 154,744 $ 143,948