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

Annual report pursuant to Section 13 and 15(d)

Note 1 - General (Details Textual)

Note 1 - General (Details Textual) $ / shares in Units, € in Millions, shares in Millions, SFr in Millions, $ in Millions							1 Months Ended			3 Months Ended	12 Months Ended
	Jan. 15, 2021 USD ($)	Jan. 15, 2021 EUR (€)	Dec. 23, 2020 USD ($) $ / shares shares	Nov. 03, 2020 USD ($)	Feb. 20, 2020 USD ($)	Jan. 03, 2020 USD ($)	Dec. 31, 2020 USD ($)	Nov. 30, 2020 USD ($)	Nov. 30, 2020 CHF (SFr)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 05, 2019	Dec. 31, 2017 USD ($)
Number of Chinese Chemical Companies											3
Number of Operating Segments											4
Proceeds from Divestiture of Businesses											$ 2,181	$ 0	$ 0
Gain (Loss) on Disposition of Business											247	(0)	(0)
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment											99	$ 0	$ 0
Venator Materials PLC [Member]
Receivable Related to Income Tax Benefits Associated With Investment															$ 34
Loss on Write-off of Receivable Related to Income Tax Benefits Associated With Investment							$ 31				$ 31
SK Capital Partners, LP [Member] \| Venator Materials PLC [Member]
Equity Method Investment Using Fair Value Option, Number of Shares Sold (in shares) \| shares			42.4								42.4
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment			$ 99
Portion of Proceeds from Sales of Equity Securities Attributable to Buyer's Option to Purchase Remaining Securities			$ 8
Sale of Equity Securities, Period of Option for Buyer to Purchase Remaining Securities (Month)			30 months
Immediate Cash Tax Savings Achieved By Sale of Equity Securities			$ 150
Equity Securities Held for Which There Exists an Option for Another Party to Purchase (in shares) \| shares			9.7
Equity Securities Held for Which There Exists an Option for Another Party to Purchase, Price Per Share (in dollars per share) \| $ / shares			$ 2.15
India-Based Do It Yourself Consumer Adhesives Business [Member] \| Pidilite Industries Ltd. [Member]
Proceeds from Divestiture of Businesses				$ 257
Disposition of Business, Cash Potentially Receivable Under Earnout				$ 28
Disposition of Business, Period to Determine Cash Receivable Under Earnout (Month)				18 months
Gain (Loss) on Disposition of Business										$ 247
Chemical Intermediates Businesses [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Divestiture of Businesses						$ 1,920
Disposal Group, Including Discontinued Operation, Consideration						2,000
Disposal Group, Including Discontinued Operation, Cash Purchase Price						1,920
Disposal Group, Including Discontinued Operation, Pension and Other Post Employment Plan Benefit Obligation						$ 72
Sale and Leaseback of Certain Properties in Basel, Switzerland [Member]
Sale Leaseback Transaction, Proceeds Received								$ 73	SFr 67
Sale Leaseback Transaction, Period of Leaseback (Year)								5 years	5 years
Sale and Leaseback Transaction, Gain (Loss), Net								$ 33	SFr 30
Senior Notes Maturing April 2021 [Member] \| Subsequent Event [Member]
Debt Instrument, Amount Redeemed	$ 541	€ 445
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%	100.00%
Icynene-Lapolla [Member]
Business Acquisition, Number of Manufacturing Facilities Operated														2
Payments to Acquire Businesses, Gross					$ 353
Acquisition of Gabriel [Member] \| Subsequent Event [Member]
Payments to Acquire Businesses, Gross	$ 250