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

Note 2 - Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2020
Minimum [Member] \| Buildings and Equipment [Member]
Property, plant and equipment, useful life (Year)	5 years
Minimum [Member] \| Plant and Equipment [Member]
Property, plant and equipment, useful life (Year)	3 years
Minimum [Member] \| Furniture, Fixtures and Leasehold Improvements [Member]
Property, plant and equipment, useful life (Year)	5 years
Maximum [Member] \| Buildings and Equipment [Member]
Property, plant and equipment, useful life (Year)	50 years
Maximum [Member] \| Plant and Equipment [Member]
Property, plant and equipment, useful life (Year)	30 years
Maximum [Member] \| Furniture, Fixtures and Leasehold Improvements [Member]
Property, plant and equipment, useful life (Year)	20 years