Property, Plant and Equipment - Narrative (Details) $ in Millions			3 Months Ended
	Sep. 15, 2023 USD ($)	Sep. 15, 2023 CAD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Well costs			$ 34,185,000	$ 196,545,000	$ 49,118,000	$ 171,860,000
Capitalized exploratory well costs charged to expense			26,471,000	0
Exploratory well costs capitalized more than one year			22,500,000
Impairment of oil and gas properties			34,500,000	$ 0
Mexico
Property, Plant and Equipment [Line Items]
Capitalized exploratory well costs charged to expense			5,900,000
Vietnam
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year			15,100,000
Canada
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year			4,700,000
Proceeds from sales of property, plant and equipment		$ 139
Gain (loss) on sale of property plant equipment	$ 0
Brunei
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year			$ 2,700,000