Price Risk Management Activities, Hedging Instruments by Consolidated Balance Sheet Location (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivatives Designated as Hedging Instruments [Member] \| Commodity Contracts [Member] \| Receivable, Net [Member]
Fair Values of Derivative Instruments
Derivative asset, subject to netting	$ 23	$ 141
Derivative liability, subject to netting	15	34
Derivatives Not Designated as Hedging Instruments [Member]
Fair Values of Derivative Instruments
Derivative asset, total	673	662
Derivative liability, total	702	622
Derivatives Not Designated as Hedging Instruments [Member] \| Commodity Contracts [Member] \| Receivable, Net [Member]
Fair Values of Derivative Instruments
Derivative asset, subject to netting	672	662
Derivative liability, subject to netting	690	609
Derivatives Not Designated as Hedging Instruments [Member] \| Physical Purchase Contracts [Member] \| Inventories [Member]
Fair Values of Derivative Instruments
Derivative asset, not subject to netting	0	0
Derivative liability, not subject to netting	11	6
Derivatives Not Designated as Hedging Instruments [Member] \| Foreign Currency Contracts [Member] \| Receivable, Net [Member]
Fair Values of Derivative Instruments
Derivative asset, not subject to netting	1	0
Derivative liability, not subject to netting	0	0
Derivatives Not Designated as Hedging Instruments [Member] \| Foreign Currency Contracts [Member] \| Accrued Expenses [Member]
Fair Values of Derivative Instruments
Derivative asset, not subject to netting	0	0
Derivative liability, not subject to netting	$ 1	$ 7

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