Huntsman Corporation Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Restructuring, Impairment and Plant Closing Costs (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring and Related Cost, Gain on Sale of Assets	$ 3		$ 3
Polyurethanes [Member]
Restructuring and Related Cost, Gain on Sale of Assets	3		3
Employee Severance [Member] \| Corporate and Other [Member]
Restructuring Charges, Total			16
Restructuring and Related Cost, Expected Cost, Total	3		3
Employee Severance [Member] \| Polyurethanes [Member]
Restructuring Charges, Total			4
Employee Severance [Member] \| Polyurethanes [Member] \| Minimum [Member]
Restructuring and Related Cost, Expected Cost, Total	4		4
Employee Severance [Member] \| Polyurethanes [Member] \| Maximum [Member]
Restructuring and Related Cost, Expected Cost, Total	$ 5		5
Employee Severance [Member] \| Advanced Materials [Member]
Restructuring Charges, Total			$ 8	$ 4
Employee Severance [Member] \| Textile Effects [Member]
Restructuring Charges, Total				10
Workforce Reductions [Member] \| Polyurethanes [Member]
Restructuring Charges, Total				6
Workforce Reductions [Member] \| Advanced Materials [Member]
Restructuring Charges, Total				$ 10
Program to Optimize Downstream Footprint [Member] \| Polyurethanes [Member]
Restructuring Charges, Total		$ 1