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ASSET RETIREMENT OBLIGATION (Tables)
12 Months Ended
Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Changes to Asset Retirement Obligation
The following table describes changes to the Company’s asset retirement obligation (ARO) liability:
For the Year Ended December 31,
20212020
 (In millions)
Asset retirement obligation at beginning of the year$1,944 $1,858 
Liabilities incurred10 
Liabilities divested(44)(26)
Liabilities settled(32)(30)
Accretion expense113 109 
Revisions in estimated liabilities146 23 
Asset retirement obligation at end of the year2,130 1,944 
Less current portion(41)(56)
Asset retirement obligation, long-term$2,089 $1,888