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Asset Retirement Obligations (Tables)
 9 Months Ended
Sep. 30, 2025
Asset Retirement Obligation [Abstract]  
Schedule of Asset Retirement Obligation Rollforward Analysis
The following table presents the reconciliation of the beginning and ending aggregate carrying amounts of short-term and long-term legal obligations associated with the retirement of property, plant and equipment for the nine-month periods ended September 30, 2025 and 2024 (in millions):
Nine Months Ended
September 30,
 20252024
Carrying Amount at January 1$1,460 $1,506 
Liabilities Incurred (1)
84 39 
Liabilities Settled (2)
(53)(50)
Accretion44 43 
Revisions5 (84)
Foreign Currency Translations1 (1)
Carrying Amount at September 30
$1,541 $1,453 
Current Portion$72 $44 
Noncurrent Portion$1,469 $1,409 
(1)Liabilities incurred for the nine-month period ended September 30, 2025, included $52 million related to the Encino acquisition.
(2)Includes settlements related to asset sales and property exchanges.