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Suspended Well Costs - Schedule of Suspended Well Costs (Details)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
USD ($)
project
Dec. 31, 2024
USD ($)
project
Reconciliation of capitalized exploratory well costs on completed wells    
Beginning balance  $ 196,202  
Additions to capitalized exploratory well costs pending the determination of proved reserves  15,324  
Reclassification due to determination of proved reserves  0  
Capitalized exploratory well costs charged to expense  0  
Ending balance  211,526  
Aging of capitalized exploratory well costs and number of projects for which exploratory well costs were capitalized for more than one year    
Exploratory well costs capitalized for a period of one year or less 0 $ 0
Exploratory well costs capitalized for a period of one to five years 71,115 63,552
Exploratory well costs capitalized for a period of six to ten years 140,411 132,650
Ending balance $ 211,526 $ 196,202
Number of projects that have exploratory well costs that have been capitalized for a period greater than one year | project 2 2