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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
The Company’s property, plant and equipment assets for the respective periods are presented as follows:

December 31, 2024December 31, 2023
(Thousands of dollars)CostNetCostNet
Exploration and production ¹$21,716,358 $8,021,620 
2
$21,228,490 $8,201,475 
2
Corporate and other149,834 33,033 132,092 23,722 
Property, plant and equipment$21,866,192 $8,054,653 $21,360,582 $8,225,197 
¹  Includes unproved mineral rights as follows:$283,015 $151,341 $351,000 $228,329 
2  Includes $13,335 in 2024 and $15,356 in 2023 related to administrative assets and support equipment.
Schedule of Recognized Impairments
The following table reflects the recognized before tax impairments for each of the three years presented.
(Thousands of dollars)202420232022
United States - Offshore
$62,909 $— $— 
$62,909 $— $— 
Schedule of Net Changes in Capitalized Exploratory Well Costs The following table reflects the net changes in capitalized exploratory well costs for each of the three years presented.
(Thousands of dollars)
202420232022
Beginning balance at January 1$49,118 $171,860 $179,481 
Additions pending the determination of proved reserves49,408 48 33,440 
Reclassifications to proved properties based on the determination of proved reserves— (82,185)— 
Divestment
— — (7,915)
Capitalized exploration well costs charged to expense(26,471)(40,605)(33,146)
Ending balance at December 31$72,055 $49,118 $171,860 
Oil and Gas, Capitalized Exploratory Well Cost, Capitalized for Period Greater than One Year, Aging
The following table provides an aging of capitalized exploratory well costs based on the date the drilling was completed for each individual well. 
202420232022
(Thousands of dollars)
AmountNo. of
Wells		AmountNo. of
Wells		AmountNo. of
Wells
Aging of capitalized well costs
Zero to one year$49,790 5$— — $15,527 2
One to two years— —— — 13,307 2
Two to three years— —2,698 1— — 
Three years or more22,265 346,420 3143,026 5
$72,055 8$49,118 4$171,860 9