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Commitments and Contingencies (Narrative) (Detail)
gal in Millions, T in Millions
 7 Months Ended 12 Months Ended
Aug. 10, 2018
USD ($)
Mar. 06, 2018
USD ($)
Jul. 25, 2017
USD ($)
Dec. 31, 2021
USD ($)
agreement
T
gal
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2014
USD ($)
Contingencies And Commitments [Line Items]              
Amount of surety bonds to secure asset closure and retirement requirements       $ 744,037,000 $ 727,361,000    
Amount of surety bonds to secure performance under collection contracts and landfill operating agreements       $ 556,570,000 482,262,000    
Percentage of interest in company that issues financial surety bonds       9.90%      
Outstanding amount of financial surety bonds       $ 410,378,000 413,970,000    
Purchase Obligation       100,220,000 93,813,000 $ 73,269,000  
Environmental remediation reserve - current portion       2,300,000 2,300,000    
Environmental remediation reserve-Non-current portion       $ 20,483,000 $ 19,121,000    
Unrecorded unconditional purchase obligation, remaining volume | gal       60.0      
Purchase commitment       $ 151,733,000      
Minimum required threshold for disclosing environmental matters involving potential monetary sanctions       300,000      
Threshold used for disclosing environmental matters involving potential monetary sanctions       $ 1,000,000      
Number of collective bargaining agreements expired or set to expire | agreement       22      
Estimated clean up costs             $ 342,000,000
Bridge and Thoroughfare Fee [Member]              
Contingencies And Commitments [Line Items]              
Loss contingency amount sought   $ 83,000 $ 11,600,000        
Noncompliance fee   $ 750          
Chiquita Canyon LLC [Member]              
Contingencies And Commitments [Line Items]              
Annual tons of waste accepted at landfill | T       2.5      
Estimate of total new fees and other new taxes over life of conditional use permit       $ 300,000,000      
Environmental Remediation Expense              
Contingencies And Commitments [Line Items]              
Estimated period to implement clean-up       seven years      
Required period of monitoring following the clean-up       10 years      
Penalties [Member] | Bridge and Thoroughfare Fee [Member]              
Contingencies And Commitments [Line Items]              
Fee paid $ 83,000            
Monthly payment estimate 83,000            
Fees [Member] | Bridge and Thoroughfare Fee [Member]              
Contingencies And Commitments [Line Items]              
Fee paid 750            
Monthly payment estimate $ 750