Operating Segments and Geographic Data - Segment Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	$ 14,066	$ 5,950	$ (1,892)
Operating Segments | Upstream
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	12,733	6,126	(985)
Operating Segments | Upstream | United States
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	3,678	1,934	(570)
Operating Segments | Upstream | International
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	9,055	4,192	(415)
Operating Segments | Downstream
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	1,795	750	61
Operating Segments | Downstream | United States
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	1,515	547	(192)
Operating Segments | Downstream | International
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	280	203	253
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total Income Tax Expense (Benefit)	$ (462)	$ (926)	$ (968)