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Suspended Wells and Exploration Expenses - Aging of Exploratory Well Cost, Capitalized for More than One Year (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year $ 163 $ 184 $ 512
2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 19    
2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 114    
2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 30    
WL4-00 - Malaysia      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 36    
WL4-00 - Malaysia | 2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 12    
WL4-00 - Malaysia | 2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 24    
WL4-00 - Malaysia | 2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
West Willow - Alaska      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 30    
West Willow - Alaska | 2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
West Willow - Alaska | 2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 30    
West Willow - Alaska | 2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
PL 891 - Norway      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 28    
PL 891 - Norway | 2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
PL 891 - Norway | 2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 28    
PL 891 - Norway | 2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
Narwhal Trend - Alaska      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 25    
Narwhal Trend - Alaska | 2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
Narwhal Trend - Alaska | 2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 25    
Narwhal Trend - Alaska | 2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
Montney - Canada      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 14    
Montney - Canada | 2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 7    
Montney - Canada | 2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 7    
Montney - Canada | 2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
Other of $10 Million or less each      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 30    
Other of $10 Million or less each | 2021-2023      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
Other of $10 Million or less each | 2018-2020      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year 0    
Other of $10 Million or less each | 2017 and Prior      
Capitalized Exploratory Well Costs [Line Items]      
Exploratory well costs capitalized for a period greater than one year $ 30