Derivative and Financial Instruments - Schedule of Debt Securities Carried at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	$ 8,010	$ 5,028
Short-Term Investments	2,412	446
Investments and Long-Term Receivables	8,204	7,113
Within one year \| Reported Value Measurement
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	67	10
Short-Term Investments	650	221
Within one year \| Reported Value Measurement \| Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	0	3
Short-Term Investments	322	128
Within one year \| Reported Value Measurement \| Commercial Paper
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	67	7
Short-Term Investments	216	82
Within one year \| Reported Value Measurement \| U.S. Government Obligations
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	0	0
Short-Term Investments	101	0
Within one year \| Reported Value Measurement \| U.S. Government Agency Obligations
Debt Securities, Available-for-sale [Line Items]
Short-Term Investments	8	2
Within one year \| Reported Value Measurement \| Foreign Government Obligations
Debt Securities, Available-for-sale [Line Items]
Short-Term Investments	3	7
Within one year \| Reported Value Measurement \| Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Short-Term Investments	0	2
Investments and Long-Term Receivables \| Reported Value Measurement
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	480	248
Investments and Long-Term Receivables \| Reported Value Measurement \| Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	287	173
Investments and Long-Term Receivables \| Reported Value Measurement \| U.S. Government Obligations
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	68	2
Investments and Long-Term Receivables \| Reported Value Measurement \| U.S. Government Agency Obligations
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	0	8
Investments and Long-Term Receivables \| Reported Value Measurement \| Foreign Government Obligations
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	7	2
Investments and Long-Term Receivables \| Reported Value Measurement \| Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	$ 118	$ 63

Amount of investments including trading securities, held-to-maturity securities, and short-term investments classified as other and current but excluding investement in Cenovus Energy Common Shares.

No definition available.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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