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Summarized Financial Data - Tengizchevroil LLP - Summary of Income Statement Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Affiliate Statements Captions [Line Items]
Percentage of affiliate by summarized financial information	100.00%
Sales and other operating revenues	$ 155,606	$ 94,471	$ 139,865
Net income attributable to TCO	$ 15,689	(5,561)	2,845
Tengizchevroil
Affiliate Statements Captions [Line Items]
Percentage of affiliate by summarized financial information	100.00%
Sales and other operating revenues	$ 15,927	9,194	16,281
Costs and other deductions	8,186	6,076	7,903
Net income attributable to TCO	$ 5,418	$ 2,196	$ 5,884
Tengizchevroil
Affiliate Statements Captions [Line Items]
Equity method investment, ownership percentage	50.00%

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