ACQUISITIONS, DIVESTITURES AND OTHER TRANSACTIONS - Schedule of Revenues and Costs From Discontinued Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Costs and other deductions
Income from discontinued operations, net of tax	$ 262	$ 212	$ 1,364
OxyChem | Held-for-sale
Revenues and other income
Net sales	4,368	4,706	5,101
Interest, dividends and other income	0	(21)	(14)
Gains on sales of assets and others, net	3	239	0
Total revenues and other income	4,371	4,924	5,087
Costs and other deductions
Chemical cost of sales	3,099	3,027	3,009
Selling, general and administrative expense	119	102	96
Other operating and non-operating expense	383	262	(81)
Depreciation, depletion and amortization	342	420	416
Asset impairments and other charges	0	925	0
Acquisition-related costs	22	0	0
Other expense, net	16	6	(12)
Total costs and other deductions	3,981	4,742	3,428
Income before income taxes and other items	390	182	1,659
Income from equity investments and other	105	103	108
Income before income taxes	495	285	1,767
Income tax expense	(233)	(73)	(403)
Income from discontinued operations, net of tax	$ 262	$ 212	$ 1,364