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Financial Instruments and Risk Management (Reconciliation of Unrealized Risk Management Positions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Fair Value of Contracts, Beginning of Year	$ (20)
Fair Value of Contracts Realized During the Year	(68)	$ (268)	$ 50
Fair Value of Contracts, End of Year	75	(20)
Unrealized Gain (Loss) on Derivatives	95	(236)	215
Commodity Contract [Member]
Derivative [Line Items]
Increase (Decrease) in Derivative Assets and Liabilities	$ 163	$ 32	$ 165

X

- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments and guarantee obligations.

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No definition available.

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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.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The increase (decrease) during the period in the net carrying value of derivative instruments reported as assets and liabilities that are due to be disposed of within one year (or the normal operating cycle, if longer).

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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