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Disclosures about Segments and Related Information (Sales and Other Operating Revenues) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of revenue [Line Items]
Revenues	$ 85,294	$ 90,016	$ 249,930	$ 266,159
Sales and other operating revenue
Disaggregation of revenue [Line Items]
Revenue from contracts with customers	58,992	63,594	172,603	186,194
Revenue outside the scope of ASC 606	24,339	24,198	71,263	71,995
Revenues	$ 83,331	$ 87,792	$ 243,866	$ 258,189

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