v3.26.1
Landfill and Environmental Costs (Tables)
 6 Months Ended
Jun. 30, 2026
Environmental Remediation Obligations [Abstract]  
Schedule of Accrued Landfill and Environmental Costs
A summary of accrued landfill and environmental costs as of June 30, 2026 and December 31, 2025 follows:
20262025
Landfill final capping, closure and post-closure liabilities$2,369 $2,313 
Environmental remediation429 443 
Total accrued landfill and environmental costs2,798 2,756 
Less: current portion(156)(148)
Long-term portion$2,642 $2,608 
Schedule of Final Capping, Closure and Post-Closure Costs
The following table summarizes the activity in our asset retirement obligation liabilities, which includes liabilities for final capping, closure and post-closure, for the six months ended June 30, 2026 and 2025:
20262025
Asset retirement obligation liabilities, beginning of year$2,313 $2,144 
Non-cash additions34 39 
Acquisitions, net of divestitures and other adjustments6 1 
Asset retirement obligation adjustments(17)4 
Payments(27)(21)
Accretion expense60 57 
Asset retirement obligation liabilities, end of period2,369 2,224 
Less: current portion(96)(79)
Long-term portion$2,273 $2,145 
Schedule of Activity in Environmental Remediation Liabilities
The following table summarizes the activity in our environmental remediation liabilities for the six months ended June 30, 2026 and 2025:
20262025
Environmental remediation liabilities, beginning of year$443 $447 
Payments(26)(19)
Accretion expense (non-cash interest expense)8 9 
Acquisitions, net of divestitures and other adjustments4 21 
Environmental remediation liabilities, end of period429 458 
Less: current portion(60)(62)
Long-term portion$369 $396