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Financial Instruments and Derivatives (Balance Sheet) (Details) bbl in Millions, MMBTU in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2025 MMBTU bbl	Dec. 31, 2024 MMBTU bbl
Crude oil (barrels) | Long
Net notional long / short position of derivative instruments bbl		13
Crude oil (barrels) | Short
Net notional long / short position of derivative instruments bbl	24
Petroleum products (barrels) | Short
Net notional long / short position of derivative instruments bbl	28	32
Natural gas (MMBTUs) | Short
Net notional long / short position of derivative instruments MMBtus | MMBTU	709	675

X

- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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X

- Definition

Nominal volume used to calculate payments on a derivative instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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