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Asset Retirement Obligations
9 Months Ended
Sep. 30, 2024
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations Asset Retirement Obligations
Asset retirement obligations consist primarily of rehabilitation and restoration costs, landfill capping costs, decommissioning costs, and closure and post-closure costs. Activities related to asset retirement obligations were as follows:
Three Months Ended
September 30,
Nine Months Ended
September 30,
2024202320242023
Beginning balance$194 $161 $186 $161 
Additions11 
Accretion expense16 11 
Remeasurement/translation(5)(7)
Other, including change in estimates— — 
Settlements/payments(5)(2)(9)(7)
Balance, September 30,$206 $164 $206 $164 
September 30, 2024December 31, 2023
Current portion included in “Accrued liabilities”$11 $14 
Noncurrent portion included in “Asset retirement obligations”195 172 
Asset retirement obligations$206 $186