Property, Plant and Equipment - Aging of Capitalized Exploratory Well Costs (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) well project	Jun. 30, 2022 USD ($) well project	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 193,405	$ 178,421	$ 171,860	$ 179,481
No. of Wells (in wells) | well	7	15
No. of Projects (in projects) | project	6	8
Zero to one year
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 8,494	$ 4,268
No. of Wells (in wells) | well	1	2
No. of Projects (in projects) | project	1	2
One to two years
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 38,497	$ 2,813
No. of Wells (in wells) | well	1	2
No. of Projects (in projects) | project	1	2
Two to three years
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 2,698	$ 26,848
No. of Wells (in wells) | well	1	3
No. of Projects (in projects) | project	1	2
Three years or more
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 143,716	$ 144,492
No. of Wells (in wells) | well	4	8
No. of Projects (in projects) | project	3	2