Impairment Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Impairment of Oil and Gas Properties [Line Items]
Impairment of oil and gas properties	$ 391	$ 202	$ 382
Proved Properties
Impairment of Oil and Gas Properties [Line Items]
Impairment of oil and gas properties	295	44	120
Unproved Properties
Impairment of Oil and Gas Properties [Line Items]
Impairment of oil and gas properties	63	125	206
Other Assets
Impairment of Oil and Gas Properties [Line Items]
Impairment of oil and gas properties	31	31	29
Inventories
Impairment of Oil and Gas Properties [Line Items]
Impairment of oil and gas properties	0	0	25
Firm Commitments Contracts
Impairment of Oil and Gas Properties [Line Items]
Impairment of oil and gas properties	$ 2	$ 2	$ 2