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Landfill and Environmental Costs - Narrative (Details)
$ in Millions, cubicYard in Billions
 9 Months Ended
Jan. 17, 2025
USD ($)
Sep. 27, 2018
USD ($)
Sep. 30, 2025
USD ($)
cubicYard
landfill
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Environmental Exit Cost [Line Items]            
Number of active solid waste landfills | landfill     209      
Total available disposal capacity (in cubic yards) | cubicYard     5.1      
Number of closed landfills | landfill     125      
Amount of aggregate potential remediation liability     $ 274      
Payments for management and monitoring of remediation area     31 $ 45    
Remediation liability     450 $ 454 $ 447 $ 485
Bridgeton Landfill            
Environmental Exit Cost [Line Items]            
Payments for management and monitoring of remediation area     7      
Remediation liability     55      
Remediation liability expected to be paid during the remainder of the year     $ 4      
West Lake Landfill Superfund Site            
Environmental Exit Cost [Line Items]            
Environmental exit costs, anticipated cost $ 392 $ 229        
West Lake Landfill Superfund Site | Minimum            
Environmental Exit Cost [Line Items]            
Environmental exit costs, time period allotted for completion   4 years        
West Lake Landfill Superfund Site | Maximum            
Environmental Exit Cost [Line Items]            
Environmental exit costs, time period allotted for completion   5 years