Derivative and Financial Instruments - Fair Value Amounts of Derivatives, Balance Sheet Location (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent, Prepaid Expense and Other Assets, Current
Commodity \| Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Commodity derivative assets	$ 491	$ 394
Commodity \| Other assets
Derivatives, Fair Value [Line Items]
Commodity derivative assets	113	94
Commodity \| Other accruals
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	438	397
Commodity \| Other liabilities and deferred credits
Derivatives, Fair Value [Line Items]
Commodity derivative liabilities	$ 100	$ 83

Indicates line item in statement of financial position that includes derivative asset.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Fair value as of the balance sheet date of all price risk derivative assets not designated as hedging instruments.

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- Definition

Fair value as of the balance sheet date of all price risk derivative liabilities not designated as hedging instruments.

+ References

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