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Restructuring and Reorganization Costs - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 980
Restructuring Incurred Cost Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag	Operating expenses
Restructuring reserve, current	$ 560	$ 560
Restructuring reserve, long term	430	430
Minimum
Restructuring Cost and Reserve [Line Items]
Structural reduction costs		2,000
Maximum
Restructuring Cost and Reserve [Line Items]
Structural reduction costs		$ 3,000
Operating Segments | United States | Upstream
Restructuring Cost and Reserve [Line Items]
Restructuring charges	240
Operating Segments | United States | Downstream
Restructuring Cost and Reserve [Line Items]
Restructuring charges	247
Operating Segments | International | Upstream
Restructuring Cost and Reserve [Line Items]
Restructuring charges	197
Operating Segments | International | Downstream
Restructuring Cost and Reserve [Line Items]
Restructuring charges	22
Segment Reporting, Reconciling Item
Restructuring Cost and Reserve [Line Items]
Restructuring charges	274
Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	706
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 274

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