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Note 12 - Huntsman Corporation Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
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Oct. 18, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2023 | Mar. 25, 2022 | Oct. 26, 2021
Treasury Stock, Shares, Acquired (in shares) |  |  |  |  |  |  |  | 11,019,878 |  |
Treasury Stock, Value, Acquired, Cost Method |  | $ 103 | $ 98 | $ 101 | $ 251 | $ 291 | $ 210 | $ 300 |  |
Dividends, Common Stock |  | $ 42 | $ 42 | $ 44 | $ 41 | $ 44 | $ 45 |  |  |
Common Stock, Dividends, Per Share, Declared (in dollars per share) |  | $ 0.2375 | $ 0.2375 | $ 0.2375 | $ 0.2125 | $ 0.2125 | $ 0.2125 |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired (in shares) | 614,854 |  |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 14 |  |  |  |  |  |  |  |  |
Share Repurchase Program 2021 [Member] |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  |  | $ 2,000 | $ 1,000

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 + Details
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