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Price Risk Management Activities, Hedging Instruments by Consolidated Balance Sheet Location (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Derivatives Designated as Hedging Instruments [Member] | Commodity Contracts [Member] | Receivables, Net [Member] |  |
Fair Values of Derivative Instruments |  |
Derivative asset, fair value, gross asset | $ 3 | $ 4
Derivative asset, fair value, gross liability | 26 | 17
Derivatives Not Designated as Hedging Instruments [Member] |  |
Fair Values of Derivative Instruments |  |
Derivative asset, fair value, gross asset | 524 | 412
Derivative liability, fair value, gross liability | 461 | 392
Derivatives Not Designated as Hedging Instruments [Member] | Commodity Contracts [Member] | Receivables, Net [Member] |  |
Fair Values of Derivative Instruments |  |
Derivative asset, fair value, gross asset | 519 | 399
Derivative asset, fair value, gross liability | 446 | 388
Derivatives Not Designated as Hedging Instruments [Member] | Physical Purchase Contracts [Member] | Inventories [Member] |  |
Fair Values of Derivative Instruments |  |
Derivative asset, fair value, gross asset | 4 | 13
Derivative asset, fair value, gross liability | 5 | 0
Derivatives Not Designated as Hedging Instruments [Member] | Foreign Currency Contracts [Member] | Receivables, Net [Member] |  |
Fair Values of Derivative Instruments |  |
Derivative asset, fair value, gross asset | 1 | 0
Derivative asset, fair value, gross liability | 0 | 0
Derivatives Not Designated as Hedging Instruments [Member] | Foreign Currency Contracts [Member] | Accrued Expenses [Member] |  |
Fair Values of Derivative Instruments |  |
Derivative liability, fair value, gross asset | 0 | 0
Derivative liability, fair value, gross liability | $ 10 | $ 4

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