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Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

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Asset Acquisitions and Dispositions (Narrative - Planned Disposition) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net properties, plants and equipment	$ 64,911	$ 64,911	$ 39,893
Income (Loss) before income taxes		$ 12,712	(3,140)	$ 9,524
Planned Dispositions [Member] \| Indonesia Subsidiaries [Member] \| Disposal Group Held For Sale Or Disposed Of By Sale Not Discontinued Operations [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from asset dispositions	$ 1,355
Percentage interest in Indonesia Corridor Block Production Sharing Contract	54.00%	54.00%
Net properties, plants and equipment	$ 400	$ 400
Income (Loss) before income taxes		604	$ 394	$ 512
Planned Dispositions [Member] \| Indonesia Subsidiaries [Member] \| Disposal Group Held For Sale Or Disposed Of By Sale Not Discontinued Operations [Member] \| Prepaid Expenses and Other Current Assets [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net properties, plants and equipment	300	300
Planned Dispositions [Member] \| Indonesia Subsidiaries [Member] \| Disposal Group Held For Sale Or Disposed Of By Sale Not Discontinued Operations [Member] \| Other Accruals [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Noncurrent asset retirement obligation	$ 100	$ 100
Planned Dispositions [Member] \| Indonesia Subsidiaries [Member] \| Disposal Group Held For Sale Or Disposed Of By Sale Not Discontinued Operations [Member] \| Transasia Pipeline Company [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Ownership percentage in equity investment	35.00%	35.00%