INDUSTRY SEGMENTS AND GEOGRAPHIC AREAS - Reconciles Segment Income From Continuing Operations (Details) $ in Millions		12 Months Ended
	Oct. 01, 2025 USD ($)	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment Information
Number of operating segments | segment		2
Number of reportable segments | segment		2
Income from continuing operations before income taxes		$ 3,128	$ 4,024	$ 4,662
Interest and debt expense, net		(1,079)	(1,169)	(957)
Income tax expense		(1,021)	(1,158)	(1,330)
Income from continuing operations		2,107	2,866	3,332
Income from discontinued operations, net of tax		262	212	1,364
NET INCOME		2,369	3,078	4,696
Less: Net income attributable to noncontrolling interest		(43)	(22)	0
Less: Preferred stock dividends and redemption premiums		(679)	(679)	(923)
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS		1,647	2,377	3,773
Disposed of by sale | OxyChem
Segment Information
Proceeds received for divested assets	$ 9,700
Operating segments | Oil and gas
Segment Information
Income from continuing operations before income taxes		4,586	5,214	6,240
Operating segments | Midstream and marketing
Segment Information
Income from continuing operations before income taxes		252	563	(35)
Corporate and eliminations
Segment Information
Income from continuing operations before income taxes		$ (631)	$ (584)	$ (586)