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Segment Disclosures and Related Information - Narrative (Details)	3 Months Ended
	Mar. 31, 2025 refinery
Chemicals | CPChem
Segment Reporting Information [Line Items]
Equity investment (as a percent)	50.00%
Refining | Mainly United States and Europe
Segment Reporting Information [Line Items]
Number of refineries	11

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

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