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Acquisitions and Dispositions - Schedule of Supplemental Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Supplemental Pro Forma (unaudited)
Total revenues and other Income	$ 82,156		$ 48,349	$ 19,256
Income (loss) before income taxes			12,712	(3,140)
Net income (loss)	$ 18,680		$ 8,079	$ (2,701)
Earnings per share:
Basic (in dollars per share)	$ 14.62		$ 6.09	$ (2.51)
Diluted (in dollars per share)	$ 14.57		$ 6.07	$ (2.51)
Pro Forma
Supplemental Pro Forma (unaudited)
Total revenues and other Income			$ 51,569	$ 24,703
Income (loss) before income taxes			13,913	(2,600)
Net income (loss)			$ 8,999	$ (2,392)
Earnings per share:
Basic (in dollars per share)			$ 6.78	$ (1.75)
Diluted (in dollars per share)			$ 6.76	$ (1.75)
Concho Resources Incorporated
Supplemental Pro Forma (unaudited)
Total revenues and other Income		$ 6,571
Net income (loss)		$ 2,330
Pro forma - Total Revenues and Other Income				$ 3,762
Pro forma - Income (loss) before income taxes				787
Pro forma - Net Income (Loss) attributable to ConocoPhillips				498
Shell Permian Assets
Supplemental Pro Forma (unaudited)
Pro forma - Total Revenues and Other Income			$ 3,220	1,685
Pro forma - Income (loss) before income taxes			1,201	(247)
Pro forma - Net Income (Loss) attributable to ConocoPhillips			$ 920	$ (189)

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