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Financial and Derivative Instruments - Effect of Derivatives Not Designated On Hedging Instruments (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative instruments not designated as hedging instruments, gain (loss), net | $ (505) | $ (867) | $ (795)
Commodity | Sales and other operating revenues |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative instruments not designated as hedging instruments, gain (loss), net | (304) | (651) | (685)
Commodity | Purchased crude oil and products |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative instruments not designated as hedging instruments, gain (loss), net | (154) | (226) | (64)
Commodity | Other income (loss) |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative instruments not designated as hedging instruments, gain (loss), net | $ (47) | $ 10 | $ (46)

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CC + Details
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