Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Indicates line item in statement of income or comprehensive income that includes impairment of long-lived asset held for use.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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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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Asset Retirement Obligations Cash Paid To Settle Expected Payment Year One

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Asset Retirement Obligations Cash Paid To Settle Expected Payment Year Two

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Property, Plant And Equipment And Asset Retirement Obligations (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2023	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		$ 3,300
Impairment, long-lived asset, held-for-use, before-tax, statement of income or comprehensive income [Extensible Enumeration]		Depreciation and depletion (includes impairments), Exploration expenses, including dry holes
Accumulated depreciation and depletion	$ 270,686		$ 259,585
Long-term asset retirement obligations	11,300		$ 10,900
Asset retirement obligations estimated cash payments in 2026	1,300
Asset retirement obligations estimated cash payments in 2027	1,500
Segment Reporting, Reconciling Item, Corporate Nonsegment
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	300
Upstream
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	1,600	$ 300
Chemical Products
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax	$ 100	300
Specialty Products
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		$ 100