v3.24.0.1
Summary of Significant Accounting Policies (Narrative) (Details)
12 Months Ended
Dec. 31, 2023
USD ($)
pension_plan
segment
landfill
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Concentration Risk [Line Items]      
Net book credit balances in our primary disbursement accounts $ 148,000,000 $ 143,500,000  
Restricted cash and marketable securities 163,600,000 127,600,000 $ 139,000,000.0
Insurance 120,400,000 88,500,000  
Capitalized interest $ 7,800,000 $ 5,000,000 $ 5,000,000
Post-closure period 30 years    
Number of closed landfills | landfill 126    
Asset retirement obligation, costs to discharge, inflation rate 2.00% 1.90% 1.70%
Years of historical moving average increase of the U.S. Consumer Price Index used as our basis for inflation rate 10 years 10 years 10 years
Number of operating segments | segment 3    
Goodwill impairment losses $ 0 $ 0 $ 0
Number of qualified defined pension plans | pension_plan 1    
Minimum      
Concentration Risk [Line Items]      
Amortization period for other intangible assets 1 year    
Maximum      
Concentration Risk [Line Items]      
Amortization period for other intangible assets 15 years