XML 91 R65.htm IDEA: XBRL DOCUMENT v3.25.4
Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligations
The following table shows the change in our ARO’s (dollars in thousands):

 20252024
Asset retirement obligations at the beginning of year
$1,146,586 $966,001 
Changes attributable to:  
Accretion expense64,552 56,143 
Settlements(16,570)(18,379)
Estimated cash flow revisions61,080 142,821 
Newly incurred obligation14,651 — 
Asset retirement obligations at the end of year
$1,270,299 $1,146,586