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Asset Retirement Obligations (Tables)
3 Months Ended
Mar. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in 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
March 31,
20242023
Beginning balance$186 $161 
Additions
Accretion expense
Remeasurement/translation(7)(2)
Other, including change in estimates— (3)
Settlements/payments(1)(3)
Balance, March 31,$188 $158 
March 31, 2024December 31, 2023
Current portion included in “Accrued liabilities”$12 $14 
Noncurrent portion included in “Asset retirement obligations”176 172 
Asset retirement obligations$188 $186