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Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2021
Asset Retirement Obligation Disclosure [Abstract]  
Summary Of Changes In Asset Retirement Obligations

The following table presents the changes in asset retirement obligations.

 

 

 

Year Ended December 31,

 

 

 

2021

 

 

2020

 

Asset retirement obligations as of beginning of period

 

$

369

 

 

$

398

 

Assumed WPX obligations

 

 

98

 

 

 

—

 

Liabilities incurred

 

 

36

 

 

 

18

 

Liabilities settled and divested

 

 

(57

)

 

 

(29

)

Liabilities reclassified as held for sale

 

 

—

 

 

 

(42

)

Revision of estimated obligation

 

 

11

 

 

 

4

 

Accretion expense on discounted obligation

 

 

28

 

 

 

20

 

Asset retirement obligations as of end of period

 

 

485

 

 

 

369

 

Less current portion

 

 

17

 

 

 

11

 

Asset retirement obligations, long-term

 

$

468

 

 

$

358