Huntsman Corporation Annual report pursuant to Section 13 and 15(d)

Note 2 - Summary of Significant Accounting Policies - Finite-lived Intangibles (Details)	12 Months Ended
	Dec. 31, 2020
Patents and Technology [Member] \| Minimum [Member]
Intangible assets useful life (Year)	5 years
Patents and Technology [Member] \| Maximum [Member]
Intangible assets useful life (Year)	30 years
Trademarks [Member] \| Minimum [Member]
Intangible assets useful life (Year)	9 years
Trademarks [Member] \| Maximum [Member]
Intangible assets useful life (Year)	30 years
Licenses and Other Agreements [Member] \| Minimum [Member]
Intangible assets useful life (Year)	5 years
Licenses and Other Agreements [Member] \| Maximum [Member]
Intangible assets useful life (Year)	15 years
Other Intangible Assets [Member] \| Minimum [Member]
Intangible assets useful life (Year)	5 years
Other Intangible Assets [Member] \| Maximum [Member]
Intangible assets useful life (Year)	20 years