ACQUISITIONS, DIVESTITURES AND OTHER TRANSACTIONS - Schedule of Purchase Consideration (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		1 Months Ended
Aug. 01, 2024	Aug. 31, 2023
Closing Adjustments
Total Cash Purchase Price		$ 1,100
Crownrock L.P.
Business Acquisition [Line Items]
Cash portion of purchase price	$ 9,100
Closing Adjustments
Net Working Capital and Other Purchase Price Adjustments	254
Pre-closing dividends declared by Occidental	13
Total Cash Purchase Price	$ 9,367
Total shares of Occidental common stock issued (in shares)	29.6
Occidental common stock share price (in dollars per share)	$ 59.38
Stock portion of purchase price	$ 1,755
Total purchase price	$ 11,122

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