GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Goodwill (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Goodwill [Line Items]
Goodwill	$ 8,698	$ 8,565
Goodwill, Foreign Currency Translation, Gain (Loss)	143
Telone Soil Fumigation
Goodwill [Line Items]
Goodwill, Written off Related to Sale of Business Unit	(10)
Packaging & Specialty Plastics [Member]
Goodwill [Line Items]
Goodwill	5,130	5,118
Goodwill, Foreign Currency Translation, Gain (Loss)	12
Packaging & Specialty Plastics [Member] \| Telone Soil Fumigation
Goodwill [Line Items]
Goodwill, Written off Related to Sale of Business Unit	0
Industrial Intermediates & Infrastructure [Member]
Goodwill [Line Items]
Goodwill	1,087	1,092
Goodwill, Foreign Currency Translation, Gain (Loss)	5
Industrial Intermediates & Infrastructure [Member] \| Telone Soil Fumigation
Goodwill [Line Items]
Goodwill, Written off Related to Sale of Business Unit	(10)
Performance Materials & Coatings [Member]
Goodwill [Line Items]
Goodwill	2,481	$ 2,355
Goodwill, Foreign Currency Translation, Gain (Loss)	126
Performance Materials & Coatings [Member] \| Telone Soil Fumigation
Goodwill [Line Items]
Goodwill, Written off Related to Sale of Business Unit	$ 0

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

DOW INC. 10-Q