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Note 13 - Huntsman Corporation Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2026	Mar. 25, 2022	Oct. 26, 2021
Dividends, Common Stock	$ 16	$ 14	$ 44	$ 44
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.0875	$ 0.0875	$ 0.25	$ 0.25
Share Repurchase Program 2021 [Member]
Stock Repurchase Program, Authorized Amount						$ 2,000	$ 1,000
Treasury Stock, Shares, Acquired (in shares)					0
Share Repurchase Program, Remaining Authorized, Amount	$ 547				$ 547

X

- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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