Note 23 - Stock-based Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

	Year ended December 31,
	2023		2022		2021
Huntsman Corporation compensation cost	$	28	$	29	$	30
Huntsman International compensation cost		27		27		29

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year ended December 31,
	2021
Dividend yield		2.3	%
Expected volatility		53.3	%
Risk-free interest rate		0.7	%
Expected life of stock options granted during the period (in years)		5.9

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

						Weighted
				Weighted		average
				average		remaining		Aggregate
				exercise		contractual		intrinsic
Option awards	Shares			price		term		value
	(in thousands)					(years)		(in millions)
Outstanding at January 1, 2023		3,413		$	21.93
Exercised		(467	)		20.09
Forfeited		(56	)		30.44
Outstanding at December 31, 2023		2,890			22.06		3.7	$	12
Exercisable at December 31, 2023		2,818			21.90		3.6		12

Schedule of Nonvested Share Activity [Table Text Block]

	Equity awards						Liability awards
					Weighted					Weighted
					average					average
					grant-date					grant-date
	Shares				fair value		Shares			fair value
	(in thousands)						(in thousands)
Nonvested at January 1, 2023		1,802			$	35.15		257		$	31.61
Granted		945				36.54		114			30.83
Vested		(724	)	(1)(2)		27.23		(165	)		29.51
Forfeited		(100	)			37.08		(25	)		33.58
Nonvested at December 31, 2023		1,923				38.71		181			32.75