Note 7 - Investment in Unconsolidated Affiliates - Investment in Unconsolidated Affiliates (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Total equity method investments | $ 309 | $ 346 |
| Nanjing Jinling Huntsman New Material Co., Ltd. [Member] | ||
| Total equity method investments | 272 | 282 |
| Jurong Ningwu New Material Development Co., Ltd. [Member] | ||
| Total equity method investments | 33 | 30 |
| KPX Huntsman Polyurethanes Automotive Co., Ltd. [Member] | ||
| Total equity method investments | 4 | 3 |
| BASF Huntsman Shanghai Isocyanate Investment BV [Member] | ||
| Total equity method investments | $ 0 | $ 31 |
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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