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ASSET RETIREMENT OBLIGATION
 6 Months Ended
Jun. 30, 2020
Asset Retirement Obligation Disclosure [Abstract]  
ASSET RETIREMENT OBLIGATION
ASSET RETIREMENT OBLIGATION
The following table describes changes to the Company’s asset retirement obligation (ARO) liability for the six-month period ended June 30, 2020:
 
 
(In millions)
Asset retirement obligation at December 31, 2019
 
$
1,858

Liabilities incurred
 
10

Liabilities settled
 
(19
)
Liabilities divested
 
(20
)
Accretion expense
 
54

Asset retirement obligation at June 30, 2020
 
1,883

Less current portion
 
(47
)
Asset retirement obligation, long-term
 
$
1,836