XML 76 R51.htm IDEA: XBRL DOCUMENT v3.25.3
Asset Retirement Obligations (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2025
USD ($)
Asset Retirement Obligation Disclosure [Abstract]  
Balance at beginning of year $ 385,592
Additional liabilities accrued 168
Revisions in estimated cash outflows 13,773
Disposition of assets (8,024)
Accretion expense 14,125
Balance at end of year $ 405,634