Suspended Wells and Exploration Expenses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs		$ 398	$ 564	$ 344
Norwegian Warka PL1009
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs		37
Alaska Bear-1
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs		$ 31
Canada
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs	$ 129
Europe, Middle East and North Africa
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Before-tax impairment related to the associated carrying value of capitalized undeveloped leasehold costs			$ 102