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Property, Plant And Equipment And Asset Retirement Obligations (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		$ 3,300
Accumulated depreciation and depletion	$ 259,585	272,445
Long-term asset retirement obligations	10,886	11,942
Asset retirement obligations estimated cash payments in 2025	1,146
Asset retirement obligations estimated cash payments in 2026	$ 968
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
Sakhalin -1 [Member]
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax			$ 4,500
Other Upstream
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		300	1,500
Chemical Products
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		300
Energy Products
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax			$ 400
Specialty Products
Property, Plant and Equipment [Line Items]
Impairment, long-lived asset, held-for-use, before-tax		$ 100

X

- Definition

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

+ References

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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.

+ References

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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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