Annual report pursuant to Section 13 and 15(d)

Note 7 - Investment in Unconsolidated Affiliates (Details Textual)

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Note 7 - Investment in Unconsolidated Affiliates (Details Textual) - BASF Huntsman Shanghai Isocyanate Investment BV [Member]
Dec. 31, 2021
Dec. 31, 2020
Equity Method Investment, Ownership Percentage 50.00% 50.00%
SLIC [Member]    
Ownership Interest Held by Equity Method Investee 70.00%  
Indirect Ownership Percentage 35.00%