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BUSINESS COMBINATIONS - Summary of Purchase Price Paid for Acquisitions (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Purchase Price:      
Cash used in acquisitions, net of cash acquired $ 847,763 $ 73,963  
Allocated as follows:      
Excess purchase price allocated to goodwill 737,150   $ 274,458
Waste Collection Acquisitions      
Purchase Price:      
Cash used in acquisitions, net of cash acquired 842,635 72,731  
Other non-cash consideration 0 1,220  
Holdbacks and additional consideration owed to sellers 2,435 4,112  
Total consideration 845,070 78,063  
Allocated as follows:      
Current assets 19,297 7,599  
Land 6,760 3,141  
Buildings and improvements 29,636 8,566  
Machinery and equipment 175,309 10,296  
Operating lease right-of-use assets 11,732 405  
Other non-current assets 0 40  
Deferred tax liability (11,013) 0  
Current liabilities (21,724) (3,721)  
Other long-term liabilities (828) (123)  
Operating lease liabilities, less current portion (9,939) (282)  
Fair value of assets acquired and liabilities assumed 382,431 39,372  
Excess purchase price allocated to goodwill 462,639 38,691  
Waste Collection Acquisitions | Covenants Not-to-Compete      
Allocated as follows:      
Intangible assets 37,648 2,034  
Waste Collection Acquisitions | Customer Relationships      
Allocated as follows:      
Intangible assets $ 145,553 $ 11,417