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ASSET RETIREMENT OBLIGATION (Tables)
 9 Months Ended
Sep. 30, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligation
The following table describes changes to the Company’s asset retirement obligation (ARO) liability for the nine-month period ended September 30, 2017:
 
 
(In millions)
Asset retirement obligation at December 31, 2016
 
$
2,498

Liabilities incurred
 
39

Liabilities divested
 
(810
)
Liabilities settled
 
(30
)
Accretion expense
 
103

Revisions in estimated liabilities
 
66

Asset retirement obligation at September 30, 2017
 
1,866

Less current portion
 
35

Asset retirement obligation, long-term
 
$
1,831