Derivatives and Risk Management Activities - Financial Impact (Details) - Derivatives Not Designated as a Hedge - Commodity derivatives - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Impact of derivative activities recognized in earnings
Net gain/(loss) from commodity derivative activity	$ (255)	$ (32)	$ 238
Product sales revenues
Impact of derivative activities recognized in earnings
Net gain/(loss) from commodity derivative activity	(223)	13	179
Field operating costs
Impact of derivative activities recognized in earnings
Net gain/(loss) from commodity derivative activity	$ (32)	$ (45)	$ 59