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Asset Retirement Obligations (Tables)
3 Months Ended
Mar. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Asset Retirement Obligations

The asset retirement obligations included in the Condensed Consolidated Balance Sheets in current and non-current liabilities, and the changes in that liability were as follows (in thousands):

Asset retirement obligations at December 31, 2023

$

897,226

 

Obligations assumed(1)

 

199,519

 

Obligations incurred

 

36

 

Obligations settled

 

(27,907

)

Accretion expense

 

26,903

 

Changes in estimate

 

13,555

 

Asset retirement obligations at March 31, 2024

$

1,109,332

 

Less: Current portion at March 31, 2024

 

71,799

 

Long-term portion at March 31, 2024

$

1,037,533

 

 

(1)
Assumed in connection with the QuarterNorth Acquisition. See further discussion in Note 2 Acquisitions and Divestitures.