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Asset Retirement Obligations (Tables)
9 Months Ended
Sep. 30, 2022
Asset Retirement Obligation [Abstract]  
Schedule of asset retirement obligations
Asset retirement obligations activity is as follows:
 
Nine Months Ended September 30, 2022
 
 (in millions)
Beginning asset retirement obligations$354 
New wells placed on production
Changes in estimates(1)
Liabilities settled(48)
Accretion of discount12 
Ending asset retirement obligations324 
Less current portion of asset retirement obligations(75)
Asset retirement obligations, long-term$249