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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 |  |

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- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
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