Derivative and Financial Instruments - Schedule of Debt Securities Carried at Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	$ 5,735	$ 6,458
Short-Term Investments	1,080	2,785
Investments and Long-Term Receivables	8,618	8,225
Within one year \| Reported Value Measurement
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	60	97
Short-Term Investments	508	603
Within one year \| Reported Value Measurement \| Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	0	0
Short-Term Investments	231	323
Within one year \| Reported Value Measurement \| Commercial Paper
Debt Securities, Available-for-sale [Line Items]
Cash and Cash Equivalents	60	97
Short-Term Investments	139	156
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	120	115
Within one year \| Reported Value Measurement \| U.S. Government Agency Obligations
Debt Securities, Available-for-sale [Line Items]
Short-Term Investments	17	8
Within one year \| Reported Value Measurement \| Foreign Government Obligations
Debt Securities, Available-for-sale [Line Items]
Short-Term Investments	0	0
Within one year \| Reported Value Measurement \| Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Short-Term Investments	1	1
Investments and Long-Term Receivables \| Reported Value Measurement
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	682	522
Investments and Long-Term Receivables \| Reported Value Measurement \| Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	387	309
Investments and Long-Term Receivables \| Reported Value Measurement \| U.S. Government Obligations
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	161	63
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	7	5
Investments and Long-Term Receivables \| Reported Value Measurement \| Foreign Government Obligations
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	11	7
Investments and Long-Term Receivables \| Reported Value Measurement \| Asset-backed Securities
Debt Securities, Available-for-sale [Line Items]
Investments and Long-Term Receivables	$ 116	$ 138

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.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle) and amount due to the Entity from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such investments and receivables to an amount that approximates their net realizable value.

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