Huntsman (HUN) 10-K 12 Feb 21 2020 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 01, 2021	Jun. 30, 2020
Document Information [Line Items]
Entity Central Index Key	0001307954
Entity Registrant Name	Huntsman Corporation
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-32427
Entity Address, Address Line One	10003 Woodloch Forest Drive
Entity Address, City or Town	The Woodlands
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77380
City Area Code	281
Local Phone Number	719-6000
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	42-1648585
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	HUN
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 3,796,763,992
Entity Common Stock, Shares Outstanding		221,000,456
Huntsman International LLC [Member]
Document Information [Line Items]
Entity Central Index Key	0001089748
Entity Registrant Name	Huntsman International LLC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Entity File Number	333-85141
Entity Address, Address Line One	10003 Woodloch Forest Drive
Entity Address, City or Town	The Woodlands
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77380
City Area Code	281
Local Phone Number	719-6000
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-0630358
Title of 12(b) Security	NONE
Trading Symbol	NONE
Security Exchange Name	NONE
Entity Well-known Seasoned Issuer	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	[1]	$ 1,593	$ 525
Accounts and notes receivable	[1]	902	940
Accounts receivable from affiliates		8	13
Inventories	[1]	848	914
Other current assets		217	155
Current assets held for sale		0	1,208
Total current assets		3,568	3,755
Property, plant and equipment, net	[1],[2]	2,505	2,383
Investment in unconsolidated affiliates		373	535
Intangible assets, net		453	197
Goodwill		533	276
Deferred income taxes		288	292
Notes receivable from affiliate		0	34
Operating lease right-of-use assets		445	396
Other noncurrent assets	[1]	548	452
Total assets		8,713	8,320
Current liabilities:
Accounts payable	[1]	842	765
Accounts payable to affiliates		34	57
Accrued liabilities	[1]	458	420
Current portion of debt	[1]	593	212
Current operating lease liabilities	[1]	52	42
Current liabilities held for sale		0	512
Total current liabilities		1,979	2,008
Long-term debt	[1]	1,528	2,177
Deferred income taxes		212	29
Noncurrent operating lease liabilities	[1]	411	384
Other noncurrent liabilities	[1]	910	898
Total liabilities		5,040	5,496
Commitments and contingencies (Notes 21 and 22)
Common stock $0.01 par value, 1,200,000,000 shares authorized, 258,520,411 and 257,405,496 shares issued and 220,046,262 and 224,295,868 shares outstanding, respectively		3	3
Additional paid-in capital		4,048	4,008
Treasury stock, 38,477,091 and 33,112,572 shares, respectively		(731)	(635)
Unearned stock-based compensation		(19)	(17)
Retained earnings		1,564	690
Accumulated other comprehensive loss		(1,346)	(1,362)
Total Huntsman Corporation stockholders’ equity		3,519	2,687
Noncontrolling interests in subsidiaries		154	137
Total equity		3,673	2,824
Total liabilities and equity		8,713	8,320
Huntsman International LLC [Member]
Current assets:
Cash and cash equivalents	[3]	1,591	525
Accounts and notes receivable	[3]	902	940
Accounts receivable from affiliates		47	410
Inventories	[3]	848	914
Other current assets		223	161
Current assets held for sale		0	1,208
Total current assets		3,611	4,158
Property, plant and equipment, net	[3]	2,505	2,383
Investment in unconsolidated affiliates		373	535
Intangible assets, net		453	197
Goodwill		533	276
Deferred income taxes		288	292
Notes receivable from affiliate		0	34
Operating lease right-of-use assets		445	396
Other noncurrent assets	[3]	548	452
Total assets		8,756	8,723
Current liabilities:
Accounts payable	[3]	842	765
Accounts payable to affiliates		36	143
Accrued liabilities	[3]	455	417
Current portion of debt	[3]	593	212
Current operating lease liabilities	[3]	52	42
Current liabilities held for sale		0	512
Total current liabilities		1,978	2,191
Long-term debt	[3]	1,528	2,177
Deferred income taxes		214	29
Noncurrent operating lease liabilities	[3]	411	384
Other noncurrent liabilities	[3]	900	890
Total liabilities		5,031	5,951
Retained earnings		1,203	312
Accumulated other comprehensive loss		(1,333)	(1,352)
Total equity		3,725	2,772
Total liabilities and equity		8,756	8,723
Notes payable to affiliates		0	100
Notes payable to affiliates		0	280
Members’ equity, 2,728 units issued and outstanding		3,701	3,675
Total Huntsman International LLC members’ equity		3,571	2,635
Noncontrolling interests in subsidiaries		154	137
Total equity		$ 3,725	$ 2,772
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	Long-lived assets consist of property, plant and equipment, net.
[3]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents	[1]	$ 1,593,000	$ 525,000
Accounts and notes receivable, allowance for doubtful accounts		26,000	19,000
Accounts and notes receivable, pledged as collateral		198,000	221,000
Accounts and notes receivable	[1]	902,000	940,000
Inventories	[1]	848,000	914,000
Property, plant and equipment, net	[1],[2]	2,505,000	2,383,000
Other noncurrent assets	[1]	548,000	452,000
Accounts payable	[1]	842,000	765,000
Accrued liabilities	[1]	458,000	420,000
Current portion of debt	[1]	593,000	212,000
Current operating lease liabilities	[1]	52,000	42,000
Long-term debt	[1]	1,528,000	2,177,000
Noncurrent operating lease liabilities	[1]	411,000	384,000
Other noncurrent liabilities	[1]	$ 910,000	$ 898,000
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)		1,200,000,000	1,200,000,000
Common stock, shares issued (in shares)		258,520,411	257,405,496
Common stock, shares outstanding (in shares)		220,046,262	224,295,868
Treasury stock, shares (in shares)		38,477,091	33,112,572
Huntsman International LLC [Member]
Cash and cash equivalents	[3]	$ 1,591,000	$ 525,000
Accounts and notes receivable, allowance for doubtful accounts		26,000	19,000
Accounts and notes receivable, pledged as collateral		198,000	221,000
Accounts and notes receivable	[3]	902,000	940,000
Inventories	[3]	848,000	914,000
Property, plant and equipment, net	[3]	2,505,000	2,383,000
Other noncurrent assets	[3]	548,000	452,000
Accounts payable	[3]	842,000	765,000
Accrued liabilities	[3]	455,000	417,000
Current portion of debt	[3]	593,000	212,000
Current operating lease liabilities	[3]	52,000	42,000
Long-term debt	[3]	1,528,000	2,177,000
Noncurrent operating lease liabilities	[3]	411,000	384,000
Other noncurrent liabilities	[3]	$ 900,000	$ 890,000
Members' equity, units issued (in shares)		2,728	2,728
Members' equity, units outstanding (in shares)		2,728	2,728
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		$ 2,000	$ 0
Accounts and notes receivable		6,000	13,000
Inventories		38,000	35,000
Property, plant and equipment, net		167,000	180,000
Other noncurrent assets		23,000	20,000
Accounts payable		119,000	100,000
Accrued liabilities		13,000	10,000
Current portion of debt		47,000	36,000
Current operating lease liabilities		5,000	4,000
Long-term debt		3,000	29,000
Noncurrent operating lease liabilities		17,000	11,000
Other noncurrent liabilities		82,000	87,000
Variable Interest Entity, Primary Beneficiary [Member] | Huntsman International LLC [Member]
Cash and cash equivalents		2,000	0
Accounts and notes receivable		6,000	13,000
Inventories		38,000	35,000
Property, plant and equipment, net		167,000	180,000
Other noncurrent assets		23,000	20,000
Accounts payable		119,000	100,000
Accrued liabilities		13,000	10,000
Current portion of debt		47,000	36,000
Current operating lease liabilities		5,000	4,000
Long-term debt		3,000	29,000
Noncurrent operating lease liabilities		17,000	11,000
Other noncurrent liabilities		$ 82,000	$ 87,000
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	Long-lived assets consist of property, plant and equipment, net.
[3]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Total revenues	[1]	$ 6,018	$ 6,797	$ 7,604
Cost of goods sold		4,918	5,415	5,840
Gross profit		1,100	1,382	1,764
Operating expenses:
Selling, general and administrative		775	786	789
Research and development		135	137	145
Restructuring, impairment and plant closing costs (credits)		49	(41)	(7)
Merger costs		0	0	2
Gain on sale of India-based DIY business		(247)	0	0
Other operating (income) expense, net		(45)	31	8
Total operating expenses		667	913	937
Operating income		433	469	827
Interest expense, net		(86)	(111)	(115)
Equity in income of investment in unconsolidated affiliates		42	54	55
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Loss on early extinguishment of debt		0	(23)	(3)
Other income, net		36	20	32
Income from continuing operations before income taxes		337	391	734
Income tax (expense) benefit		(46)	38	(45)
Income from continuing operations		291	429	689
Income (loss) from discontinued operations, net of tax		775	169	(39)
Net income		1,066	598	650
Net income attributable to noncontrolling interests		(32)	(36)	(313)
Net (loss) income		$ 1,034	$ 562	$ 337
Basic income (loss) per share:
Income from continuing operations attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 1.18	$ 1.72	$ 2.55
Income (loss) from discontinued operations attributable to Huntsman Corporation common stockholders, net of tax (in dollars per share)		3.51	0.74	(1.13)
Net income attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 4.69	$ 2.46	$ 1.42
Weighted average shares (in shares)		220.6	228.9	238.1
Diluted income (loss) per share:
Income from continuing operations attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 1.17	$ 1.70	$ 2.52
Income (loss) from discontinued operations attributable to Huntsman Corporation common stockholders, net of tax (in dollars per share)		3.49	0.74	(1.13)
Net income attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 4.66	$ 2.44	$ 1.39
Weighted average shares (in shares)		221.9	230.6	241.6
Amounts attributable to Huntsman Corporation common stockholders:
Income from continuing operations		$ 259	$ 393	$ 608
Income (loss) from discontinued operations, net of tax		775	169	(271)
Net income		1,034	562	337
Third Party Customers [Member]
Total revenues		5,903	6,664	7,451
Related Party Customers [Member]
Total revenues		$ 115	$ 133	$ 153
[1]	Geographic information for revenues is based upon countries into which product is sold.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 1,066	$ 598	$ 650
Other comprehensive loss, net of tax:
Foreign currency translations adjustments	41	2	(192)
Pension and other postretirement benefits adjustments	(19)	(37)	(39)
Other, net	0	(1)	(9)
Other comprehensive loss, net of tax	22	(36)	(240)
Comprehensive income	1,088	562	410
Comprehensive income attributable to noncontrolling interests	(38)	(31)	(266)
Comprehensive income	1,050	531	144
Net income	1,066	598	650
Huntsman International LLC [Member]
Net income	1,067	587	636
Other comprehensive loss, net of tax:
Foreign currency translations adjustments	41	2	(194)
Pension and other postretirement benefits adjustments	(16)	(35)	(37)
Other, net	0	(1)	(6)
Other comprehensive loss, net of tax	25	(34)	(237)
Comprehensive income	1,092	553	399
Comprehensive income attributable to noncontrolling interests	(38)	(31)	(266)
Comprehensive income	1,054	522	133
Net income	$ 1,067	$ 587	$ 636

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Millions	Huntsman International LLC [Member]Common Stock Outstanding [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Huntsman International LLC [Member]Common Stock Outstanding [Member]	Huntsman International LLC [Member]Common Stock [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Huntsman International LLC [Member]Common Stock [Member]	Huntsman International LLC [Member]Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Huntsman International LLC [Member]Retained Earnings [Member]	Huntsman International LLC [Member]AOCI Attributable to Parent [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Huntsman International LLC [Member]AOCI Attributable to Parent [Member]	Huntsman International LLC [Member]Noncontrolling Interest [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Huntsman International LLC [Member]Noncontrolling Interest [Member]	Huntsman International LLC [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Huntsman International LLC [Member]	Common Stock Outstanding [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock Outstanding [Member]	Common Stock [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Noncontrolling Interest [Member]	Additional Paid-in Capital [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Treasury Stock [Member]	Deferred Compensation, Share-based Payments [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Deferred Compensation, Share-based Payments [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Balance (in shares) at Dec. 31, 2017	0	2,728											0	240,213,606
Balance at Dec. 31, 2017			$ 0	$ 3,616	$ 10	$ (270)	$ (10)	$ (1,263)	$ 0	$ 751	$ 0	$ 2,834			$ 0	$ 3	$ 10	$ 161	$ (10)	$ (1,268)	$ 0	$ 751	$ 0	$ 3,889	$ 0	$ (150)	$ 0	$ (15)	$ 0	$ 3,371
Net income				0		323		0		313		636				0		337		0		313		0		0		0		650
Other comprehensive loss				0		0		(195)		(42)		(237)				0		0		(198)		(42)		0		0		0		(240)
Issuance of nonvested stock awards																0		0		0		0		14		0		(14)		0
Vesting of stock awards (in shares)														1,135,003
Vesting of stock awards																0		0		0		0		11		0		0		11
Recognition of stock-based compensation																0		0		0		0		8		0		13		21
Repurchase and cancellation of stock awards (in shares)		0												(259,643)
Repurchase and cancellation of stock awards																0		(30)		0		0		0		0		0		(30)
Stock options exercised (in shares)		0												2,310,663
Stock options exercised																0		(29)		0		0		46		0		0		17
Treasury stock repurchased (in shares)		0												(10,405,457)
Treasury stock repurchased																0		0		0		0		0		(277)		0		(277)
Disposition of a portion of Venator				18		0		0		0		18				0		0		0		0		18		0		0		18
Costs of the secondary offering of Venator				(2)		0		0		0		(2)				0		0		0		0		(2)		0		0		(2)
Noncontrolling interest from partial disposal of Venator				0		0		0		27		27				0		0		0		27		0		0		0		27
Deconsolidation of Venator				0		0		160		(751)		(591)				0		0		160		(751)		0		0		0		(591)
Accrued and unpaid dividends																0		(1)		0		0		0		0		0		(1)
Dividends paid to noncontrolling interests				0		0		0		(69)		(69)				0		0		0		(69)		0		0		0		(69)
Dividends declared on common stock ($0.65 per share)																0		(156)		0		0		0		0		0		(156)
Balance (in shares) at Dec. 31, 2018		2,728												232,994,172
Balance at Dec. 31, 2018				3,658		(91)		(1,308)		229		2,488				3		292		(1,316)		229		3,984		(427)		(16)		2,749
Dividends paid to parent				0		(154)		0		0		(154)
Contribution from parent				26		0		0		0		26
Net income				0		551		0		36		587				0		562		0		36		0		0		0		598
Other comprehensive loss				0		0		(44)		10		(34)				0		0		(46)		10		0		0		0		(36)
Issuance of nonvested stock awards																0		0		0		0		17		0		(17)		0
Vesting of stock awards (in shares)														1,643,368
Vesting of stock awards				28		0		0		0		28				0		0		0		0		7		0		0		7
Recognition of stock-based compensation																0		0		0		0		7		0		16		23
Repurchase and cancellation of stock awards (in shares)														(488,441)
Repurchase and cancellation of stock awards																0		(12)		0		0		0		0		0		(12)
Stock options exercised (in shares)														246,661
Stock options exercised																0		(2)		0		0		4		0		0		2
Treasury stock repurchased (in shares)														(10,099,892)
Treasury stock repurchased																0		0		0		0		0		(208)		0		(208)
Dividends paid to noncontrolling interests				0		0		0		(65)		(65)				0		0		0		(65)		0		0		0		(65)
Dividends declared on common stock ($0.65 per share)																0		(150)		0		0		0		0		0		(150)
Acquisition of noncontrolling interests, net of tax				(11)		0		0		(73)		(84)				0		0		0		(73)		(11)		0		0		$ (84)
Balance (in shares) at Dec. 31, 2019		2,728												224,295,868																224,295,868
Balance at Dec. 31, 2019				3,675		312		(1,352)		137		2,772				3		690		(1,362)		137		4,008		(635)		(17)		$ 2,824
Dividends paid to parent				0		(148)		0		0		(148)
Net income				0		1,035		0		32		1,067				0		1,034		0		32		0		0		0		1,066
Other comprehensive loss				0		0		19		6		25				0		0		16		6		0		0		0		22
Issuance of nonvested stock awards																0		0		0		0		18		0		(18)		0
Vesting of stock awards				26		0		0		0		26				0		0		0		0		5		0		0		5
Recognition of stock-based compensation																0		0		0		0		7		0		16		23
Repurchase and cancellation of stock awards (in shares)														(287,247)
Repurchase and cancellation of stock awards																0		(8)		0		0		0		0		0		$ (8)
Stock options exercised (in shares)														441,754																829,000
Stock options exercised																0		(7)		0		0		10		0		0		$ 3
Treasury stock repurchased																0		0		0		0		0		(96)		0		(96)
Dividends paid to noncontrolling interests				0		0		0		(21)		(21)				0		0		0		(21)		0		0		0		(21)
Dividends declared on common stock ($0.65 per share)																0		(145)		0		0		0		0		0		$ (145)
Balance (in shares) at Dec. 31, 2020		2,728												220,046,262																220,046,262
Balance at Dec. 31, 2020				3,701		1,203		(1,333)		154		3,725				$ 3		$ 1,564		$ (1,346)		$ 154		$ 4,048		$ (731)		$ (19)		$ 3,673
Dividends paid to parent				$ 0		$ (144)		$ 0		$ 0		$ (144)

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends declared on common stock, per share (in dollars per share)	$ 0.65	$ 0.65	$ 0.65

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net income		$ 1,066	$ 598	$ 650
Less: (Income) loss from discontinued operations, net of tax		(775)	(169)	39
Income from continuing operations		291	429	689
Adjustments to reconcile income from continuing operations to net cash provided by operating activities from continuing operations:
Equity in income of investment in unconsolidated affiliates		(42)	(54)	(55)
Unrealized losses on fair value adjustments to Venator investment and related loss on disposal		88	19	62
Cash received from return on investment in unconsolidated subsidiary		19	24	0
Depreciation and amortization		283	270	255
Noncash lease expense		63	55	0
(Gain) loss on disposal of businesses/assets		(281)	(49)	3
Loss on early extinguishment of debt		0	23	3
Noncash restructuring and impairment charges (credits)		7	3	(22)
Deferred income taxes		172	(93)	(167)
Stock-based compensation		27	29	27
Other, net		8	20	3
Changes in operating assets and liabilities:
Accounts and notes receivable		100	138	(22)
Inventories		145	77	(80)
Prepaid expenses		(10)	(27)	(9)
Other current assets		(55)	53	59
Other noncurrent assets		(55)	(90)	(41)
Accounts payable		32	21	12
Accrued liabilities		(126)	(50)	44
Taxes paid on Chemical Intermediates Businesses		(231)	0	0
Other noncurrent liabilities		(158)	(142)	(57)
Net cash provided by operating activities from continuing operations		277	656	704
Net cash (used in) provided by operating activities from discontinued operations		(24)	241	503
Net cash provided by operating activities		253	897	1,207
Investing Activities:
Capital expenditures		(249)	(274)	(251)
Cash received from sale of businesses		2,181	0	0
Cash received from the sale of Venator shares		99	0	0
Acquisition of businesses, net of cash acquired		(650)	0	(366)
Proceeds from sale of assets		75	50	0
Cash received from forward swap contract related to the sale of investment in Venator		0	16	3
Other		6	7	(1)
Net cash provided by (used in) investing activities from continuing operations		1,462	(201)	(615)
Net cash provided by (used in) investing activities from discontinued operations		1	(59)	(358)
Net cash provided by (used in) investing activities		1,463	(260)	(973)
Financing Activities:
Net (repayments) borrowings on revolving loan facilities		(203)	(89)	125
Repayments of long-term debt		(21)	(676)	(68)
Proceeds from issuance of long-term debt		0	742	0
Repayments of short-term debt		(109)	0	(8)
Borrowings on short-term debt		0	102	6
Repayments of notes payable		(32)	(27)	(29)
Borrowings on note payable		0	37	27
Debt issuance costs paid		0	(8)	(4)
Costs of early extinguishment of debt		0	(21)	0
Dividends paid to common stockholders		(144)	(150)	(156)
Dividends paid to noncontrolling interests		(44)	(41)	(69)
Cash paid for noncontrolling interest		0	(101)	0
Repurchase of common stock		(96)	(208)	(277)
Repurchase and cancellation of stock awards		(8)	(12)	(30)
Proceeds from issuance of common stock		3	2	17
Proceeds from the secondary offering of Venator		0	0	44
Other		(1)	0	(2)
Net cash used in financing activities		(655)	(450)	(424)
Effect of exchange rate changes on cash		7	(2)	(35)
Increase (decrease) in cash, cash equivalents and restricted cash		1,068	185	(225)
Cash, cash equivalents and restricted cash from continuing operations at beginning of period		525	340	481
Cash, cash equivalents and restricted cash from discontinued operations at beginning of period		0	0	238
Deconsolidation of cash, cash equivalents and restricted cash from Venator		0	0	(154)
Cash, cash equivalents and restricted cash at end of period		1,593	525	340
Supplemental cash flow information:
Cash paid for interest		90	111	163
Cash paid for income taxes		316	100	179
Revenues:
Total revenues	[1]	6,018	6,797	7,604
Cost of goods sold		4,918	5,415	5,840
Gross profit		1,100	1,382	1,764
Operating expenses:
Selling, general and administrative		775	786	789
Research and development		135	137	145
Restructuring, impairment and plant closing costs (credits)		49	(41)	(7)
Merger costs		0	0	2
Gain on sale of India-based DIY business		(247)	0	0
Other operating (income) expense, net		(45)	31	8
Total operating expenses		667	913	937
Operating income		433	469	827
Interest expense, net		(86)	(111)	(115)
Equity in income of investment in unconsolidated affiliates		42	54	55
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Loss on early extinguishment of debt		0	(23)	(3)
Other income, net		36	20	32
Income from continuing operations before income taxes		337	391	734
Income tax (expense) benefit		(46)	38	(45)
Income from continuing operations		291	429	689
Income (loss) from discontinued operations, net of tax		775	169	(39)
Net income		1,066	598	650
Net income attributable to noncontrolling interests		(32)	(36)	(313)
Net (loss) income		1,034	562	337
Huntsman International LLC [Member]
Operating Activities:
Net income		1,067	587	636
Less: (Income) loss from discontinued operations, net of tax		(775)	(169)	39
Income from continuing operations		292	418	675
Adjustments to reconcile income from continuing operations to net cash provided by operating activities from continuing operations:
Equity in income of investment in unconsolidated affiliates		(42)	(54)	(55)
Unrealized losses on fair value adjustments to Venator investment and related loss on disposal		88	19	62
Cash received from return on investment in unconsolidated subsidiary		19	24	0
Depreciation and amortization		283	270	252
Noncash lease expense		63	55	0
(Gain) loss on disposal of businesses/assets		(281)	(49)	3
Loss on early extinguishment of debt		0	23	3
Noncash restructuring and impairment charges (credits)		7	3	(22)
Deferred income taxes		172	(91)	(172)
Other, net		8	36	26
Noncash compensation		26	28	26
Changes in operating assets and liabilities:
Accounts and notes receivable		100	138	(23)
Inventories		145	77	(80)
Prepaid expenses		(9)	(27)	(8)
Other current assets		(56)	48	59
Other noncurrent assets		(55)	(90)	(41)
Accounts payable		30	7	(9)
Accrued liabilities		(126)	(51)	44
Taxes paid on Chemical Intermediates Businesses		(231)	0	0
Other noncurrent liabilities		(154)	(139)	(53)
Net cash provided by operating activities from continuing operations		279	645	687
Net cash (used in) provided by operating activities from discontinued operations		(24)	241	503
Net cash provided by operating activities		255	886	1,190
Investing Activities:
Capital expenditures		(249)	(274)	(251)
Cash received from sale of businesses		2,181	0	0
Cash received from the sale of Venator shares		99	0	0
Acquisition of businesses, net of cash acquired		(650)	0	(366)
Proceeds from sale of assets		75	50	0
Cash received from forward swap contract related to the sale of investment in Venator		0	16	3
Other		7	7	0
Net cash provided by (used in) investing activities from continuing operations		1,736	(202)	(630)
Net cash provided by (used in) investing activities from discontinued operations		1	(59)	(358)
Net cash provided by (used in) investing activities		1,737	(261)	(988)
Increase in receivable from affiliate		273	(1)	(16)
Financing Activities:
Net (repayments) borrowings on revolving loan facilities		(203)	(89)	125
Repayments of long-term debt		(21)	(676)	(68)
Proceeds from issuance of long-term debt		0	742	0
Repayments of short-term debt		(109)	0	(8)
Borrowings on short-term debt		0	102	6
Repayments of notes payable		(32)	(27)	(29)
Borrowings on note payable		0	37	27
Debt issuance costs paid		0	(8)	(4)
Costs of early extinguishment of debt		0	(21)	0
Dividends paid to noncontrolling interests		(44)	(41)	(69)
Cash paid for noncontrolling interest		0	(101)	0
Proceeds from the secondary offering of Venator		0	0	44
Other		0	(1)	(5)
Net cash used in financing activities		(933)	(438)	(390)
Effect of exchange rate changes on cash		7	(2)	(35)
Increase (decrease) in cash, cash equivalents and restricted cash		1,066	185	(223)
Cash, cash equivalents and restricted cash from continuing operations at beginning of period		525	340	479
Cash, cash equivalents and restricted cash from discontinued operations at beginning of period		0	0	238
Deconsolidation of cash, cash equivalents and restricted cash from Venator		0	0	(154)
Cash, cash equivalents and restricted cash at end of period		1,591	525	340
Repayments of notes payable to affiliate		(380)	(207)	(255)
Dividends paid to parent		(144)	(148)	(154)
Supplemental cash flow information:
Cash paid for interest		90	111	163
Cash paid for income taxes		316	100	179
Revenues:
Total revenues		6,018	6,797	7,604
Cost of goods sold		4,918	5,415	5,837
Gross profit		1,100	1,382	1,767
Operating expenses:
Selling, general and administrative		769	781	784
Research and development		135	137	145
Restructuring, impairment and plant closing costs (credits)		49	(41)	(7)
Merger costs		0	0	2
Gain on sale of India-based DIY business		(247)	0	0
Other operating (income) expense, net		(45)	31	8
Total operating expenses		661	908	932
Operating income		439	474	835
Interest expense, net		(88)	(126)	(136)
Equity in income of investment in unconsolidated affiliates		42	54	55
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Loss on early extinguishment of debt		0	(23)	(3)
Other income, net		33	16	27
Income from continuing operations before income taxes		338	377	716
Income tax (expense) benefit		(46)	41	(41)
Income from continuing operations		292	418	675
Income (loss) from discontinued operations, net of tax		775	169	(39)
Net income		1,067	587	636
Net income attributable to noncontrolling interests		(32)	(36)	(313)
Net (loss) income		1,035	551	323
Third Party Customers [Member]
Revenues:
Total revenues		5,903	6,664	7,451
Third Party Customers [Member] | Huntsman International LLC [Member]
Revenues:
Total revenues		5,903	6,664	7,451
Related Party Customers [Member]
Revenues:
Total revenues		115	133	153
Related Party Customers [Member] | Huntsman International LLC [Member]
Revenues:
Total revenues		$ 115	$ 133	$ 153
[1]	Geographic information for revenues is based upon countries into which product is sold.

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parentheticals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Capital Expenditures Incurred but Not yet Paid	$ 76	$ 64	$ 66
Venator Materials PLC [Member]
Interest Paid, Net By Separated Business After Initial Public Offering Date		46
Income Taxes Paid, Net By Separated Business After Initial Public Offering Date		38
Chemical Intermediates Businesses [Member]
Income Taxes Paid Related to the Sale of a Business	231
India-Based Do It Yourself Consumer Adhesives Business [Member]
Income Taxes Paid Related to the Sale of a Business	26
Huntsman International LLC [Member]
Capital Expenditures Incurred but Not yet Paid	74	64	$ 66
Huntsman International LLC [Member] | Venator Materials PLC [Member]
Interest Paid, Net By Separated Business After Initial Public Offering Date		46
Income Taxes Paid, Net By Separated Business After Initial Public Offering Date		$ 38
Huntsman International LLC [Member] | Chemical Intermediates Businesses [Member]
Income Taxes Paid Related to the Sale of a Business	231
Huntsman International LLC [Member] | India-Based Do It Yourself Consumer Adhesives Business [Member]
Income Taxes Paid Related to the Sale of a Business	$ 26

Note 1 - General

Note 1 - General	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Nature of Operations [Text Block]	1. GENERAL D efinitions For convenience in this report, the terms “Company,” “our” or “we” may three In this report, we may may D escription of usiness We are a global manufacturer of differentiated organic chemical products. We operate in four C ompany Our Company, a Delaware corporation, was formed in 2004 1970 Currently, we operate all of our businesses through Huntsman International, our wholly-owned subsidiary. Huntsman International is a Delaware limited liability company and was formed in 1999. R ecent evelopments COVID- 19 The outbreak of the COVID- 19 March 2020, 19 December 31, 2020, not 19 second 2020, second 2020, 19 19 may In response to the impact of COVID- 19, may ● suspended merit and general wage increases that customarily would have occurred at the end of the first 2020; ● implemented a temporary hiring freeze for all non-business critical positions; ● accelerated integration efforts related to the Icynene-Lapolla and CVC Thermoset Specialties acquisitions in order to more expeditiously capture related synergies; ● implemented restructuring programs in our Polyurethanes segment to reorganize our spray polyurethane foam business to better position this business for efficiencies and growth in coming years and to optimize our downstream footprint; ● implemented a restructuring program in our Performance Products segment, primarily related to workforce reductions, in response to the sale of our Chemical Intermediates Businesses to Indorama; ● implemented restructuring programs in our Advanced Materials segment, primarily related to workforce reductions in connection with the CVC Thermoset Specialties Acquisition and the alignment of the segment’s commercial organization and optimization of the segment’s manufacturing processes; and ● implemented restructuring programs in our Textile Effects segment to rationalize and realign structurally across various functions and certain locations within the segment. For more information regarding our 2020 13. Redemption of the 2021 On January 15, 2021, € 445 2021 not Acquisition of Gabriel Performance Products On January 15, 2021, Sale of Assets at our Basel, Switzerland Site In November 2020, five Sale of India-Based Do-It-Yourself Consumer Adhesives Business On November 3, 2020, may 2019 fourth 2020, Sale of Venator Interest On December 23, 2020, 4. Concurrently with the sale of Venator ordinary shares, we entered into an option agreement, pursuant to which we granted an option to funds advised by SK Capital Partners, LP to purchase the remaining approximate 9.7 million ordinary shares we hold in Venator at $2.15 per share. The option will expire on June 23, 2023 not In connection with the 2017 December 2020. Other Significant Developments During 2020 Other significant developments that occurred during 2020 ● In May 2020, 3. ● In February 2020, 3. ● In January 2020, 4. H untsman orporation and untsman nternational inancial tatements Except where otherwise indicated, these notes relate to the consolidated financial statements for both our Company and Huntsman International. The differences between our consolidated financial statements and Huntsman International’s consolidated financial statements relate primarily to the following: ● purchase accounting recorded at our Company for the 2003 2005; ● the different capital structures; and ● a note payable from Huntsman International to us, which was repaid in full during the first 2020.

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2. C arrying alue of ong ived ssets We review long-lived assets and all amortizable intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of these assets may not C ash and ash quivalents We consider cash in checking accounts and cash in short-term highly liquid investments with original maturities of three C ost of oods old We classify the costs of manufacturing and distributing our products as cost of goods sold. Manufacturing costs include variable costs, primarily raw materials and energy, and fixed expenses directly associated with production. Manufacturing costs also include, among other things, plant site operating costs and overhead (including depreciation), production planning and logistics costs, repair and maintenance costs, plant site purchasing costs, and engineering and technical support costs. Distribution, freight and warehousing costs are also included in cost of goods sold. D erivatives and edging ctivities All derivatives, whether designated in hedging relationships or not, three not not E nvironmental xpenditures Environmental related restoration and remediation costs are recorded as liabilities when site restoration and environmental remediation and clean-up obligations are either known or considered probable and the related costs can be reasonably estimated. Other environmental expenditures that are principally maintenance or preventative in nature are recorded when expended and incurred and are expensed or capitalized as appropriate. See “Note 22. E quity ethod nvestments We account for our equity investments where we own a non-controlling interest, but exercise significant influence, under the equity method of accounting. Under the equity method of accounting, our original cost of the investment is adjusted for our share of equity in the earnings of the equity investee and reduced by dividends and distributions of capital received, unless the fair value option is elected, in which case the investment balance is marked to fair value each reporting period and the impact of changes in fair value of the equity investment are reported in earnings. F oreign urrency ranslation The accounts of our operating subsidiaries outside of the U.S., unless they are operating in highly inflationary economic environments, consider the functional currency to be the currency of the economic environment in which they operate. Accordingly, assets and liabilities are translated at rates prevailing at the balance sheet date. Revenues, expenses, gains and losses are translated at a weighted average rate for the period. Cumulative translation adjustments are recorded to equity as a component of accumulated other comprehensive loss. If a subsidiary operates in an economic environment that is considered to be highly inflationary (100% cumulative inflation over a three Foreign currency transaction gains and losses are recorded in other operating (income) expense, net in our consolidated statements of operations and were (losses) gains of $2 million, $(8) million and $3 million for the years ended December 31, 2020, 2019 2018 I ncome axes We use the asset and liability method of accounting for income taxes. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial and tax reporting purposes. We evaluate deferred tax assets to determine whether it is more likely than not On December 22, 2017, January 1, 2018), January 1, 2018) In 2017, 2018, not Accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The application of income tax law is inherently complex. We are required to determine if an income tax position meets the criteria of more-likely-than- not not 20. I ntangible ssets and oodwill Intangible assets are stated at cost (fair value at the time of acquisition) and are amortized using the straight-line method over the estimated useful lives or the life of the related agreement as follows: In Years Patents and technology 5 - 30 Trademarks 9 - 30 Licenses and other agreements 5 - 15 Other intangibles 5 - 20 Goodwill represents costs in excess of fair values assigned to the underlying net assets of acquired businesses. Goodwill is not third not During 2020 3. 2019, I nventories Inventories are stated at the lower of cost or market, with cost determined using LIFO, first first L eases On January 1, 2019, No. 2018 11, three The determination of whether a contract is or contains a lease is performed at the lease inception date. Lease right-of-use assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term, using incremental borrowing rates as the implicit rates are not 9. L egal osts We expense legal costs, including those legal costs incurred in connection with a loss contingency, as incurred. N et ncome er hare ttributable to untsman orporation Basic income per share excludes dilution and is computed by dividing net income attributable to Huntsman Corporation common stockholders by the weighted average number of shares outstanding during the period. Diluted income per share reflects all potential dilutive common shares outstanding during the period and is computed by dividing net income available to Huntsman Corporation common stockholders by the weighted average number of shares outstanding during the period increased by the number of additional shares that would have been outstanding as dilutive securities. Basic and diluted income per share is determined using the following information (in millions): Year ended December 31, 2020 2019 2018 Numerator: Basic and diluted income from continuing operations: Income from continuing operations attributable to Huntsman Corporation $ 259 $ 393 $ 608 Basic and diluted net income: Net income attributable to Huntsman Corporation $ 1,034 $ 562 $ 337 Denominator: Weighted average shares outstanding 220.6 228.9 238.1 Dilutive shares: Stock-based awards 1.3 1.7 3.5 Total weighted average shares outstanding, including dilutive shares 221.9 230.6 241.6 Additional stock-based awards of 4.3 million, 3.0 million and 0.8 million weighted average equivalent shares of stock were outstanding during the years ended December 31, 2020, 2019 2018 not O ther oncurrent ssets Periodic maintenance and repairs applicable to major units of manufacturing facilities (a “turnaround”) are accounted for on the deferral basis by capitalizing the costs of the turnaround and amortizing the costs over the estimated period until the next turnaround. P rinciples of onsolidation Our consolidated financial statements include the accounts of our wholly owned and majority owned subsidiaries and any variable interest entities for which we are the primary beneficiary. All intercompany accounts and transactions have been eliminated. P roperty, lant and quipment Property, plant and equipment is stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives or lease term as follows: In Years Buildings and equipment 5 - 50 Plant and equipment 3 - 30 Furniture, fixtures and leasehold improvements 5 - 20 Interest expense capitalized as part of plant and equipment was $7 million, $4 million and $4 million for the years ended December 31, 2020, 2019 2018 Normal maintenance and repairs of plant and equipment are charged to expense as incurred. Renewals, betterments and major repairs that materially extend the useful life of the assets are capitalized, and the assets replaced, if any, are retired. R evenue ecognition We generate substantially all of our revenue through product sales in which revenue is recognized at a point in time. We recognize revenue when control of the promised goods is transferred to our customers. Control of goods usually passes to the customer at the time shipment is made. Revenue is measured as the amount that reflects the consideration that we expect to be entitled to in exchange for those goods. We generate substantially all of our revenues through sales in the open market and long-term supply agreements. We recognize revenue when control of the promised goods is transferred to our customers. Control of goods usually passes to the customer at the time shipment is made. Revenue is measured as the amount that reflects the consideration that we expect to be entitled to in exchange for those goods. Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. Incidental items that are immaterial in the context of the contract are recognized as expense. We have elected to account for all shipping and handling activities as fulfillment costs. We have also elected to expense commissions when incurred as the amortization period of the commission asset that we would have otherwise recognized is less than one Substantially all of our revenue is generated through product sales in which revenue is recognized at a point in time. At contract inception, we assess the goods and services, if any, promised in our contracts and identify a performance obligation for each promise to transfer to the customer a good or service that is distinct. In substantially all cases, a contract has a single performance obligation to deliver a promised good to the customer. Revenue is recognized when control of the product is transferred to the customer (i.e., when our performance obligation is satisfied), which typically occurs at shipment. Further, in determining whether control has transferred, we consider if there is a present right to payment and legal title, along with risks and rewards of ownership having transferred to the customer. The amount of consideration we receive and revenue we recognize is based upon the terms stated in the sales contract, which may not one one not not 18. S ecuritization of ccounts eceivable Under our A/R Programs, we grant an undivided interest in certain of our trade receivables to the special purpose entities (“SPE”) in the U.S. and EU. This undivided interest serves as security for the issuance of debt. The A/R Programs provide for financing in both U.S. dollars and euros. The amounts outstanding under our A/R Programs are accounted for as secured borrowings. See “Note 15. S tock ased ompensation We measure the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. That cost, net of estimated forfeitures, will be recognized over the period during which the employee is required to provide services in exchange for the award. See “Note 24. U E The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. A P A D 2020 We adopted the following accounting pronouncements during 2020, not ● Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2016 13, Financial Instruments—Credit Losses (Topic 326 ● FASB ASU No. 2018 14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715 20 ● FASB ASU No. 2018 15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350 40 ● FASB ASU No. 2020 04, Reference Rate Reform (Topic 848 A P P A F uture P Eriods The following accounting pronouncement becomes effective subsequent to fiscal year 2020, not ● FASB ASU No. 2021 01, Reference Rate Reform (Topic 848

Note 3 - Business Combinations

Note 3 - Business Combinations and Acquisitions	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Business Combination Disclosure [Text Block]	3 BUSINESS COMBINATIONS AND ACQUISITIONS A cquisition of hermoset pecialties On May 18, 2020, December 31, 2020, We have accounted for the CVC Thermoset Specialties Acquisition using the acquisition method. As such, we analyzed the fair value of tangible and intangible assets acquired and liabilities assumed. The preliminary allocation of acquisition cost to the assets acquired and liabilities assumed is summarized as follows (dollars in millions): Fair value of assets acquired and liabilities assumed: Cash paid for the CVC Thermoset Specialties Acquisition $ 304 Accounts receivable $ 12 Inventories 37 Property, plant and equipment 67 Intangible assets 117 Goodwill 120 Accounts payable (7 ) Accrued liabilities (1 ) Deferred income taxes (41 ) Total fair value of net assets acquired $ 304 The acquisition cost allocation is preliminary pending final determination of the fair value of assets acquired and liabilities assumed, primarily relating to the final valuation of intangible assets and deferred taxes. As a result of this preliminary valuation of the assets and liabilities, reallocations were made in certain inventory, property, plant and equipment, intangible asset, goodwill and deferred tax balances during the fourth 2020. none The acquired business had revenues and net loss of $43 million and $6 million, respectively, for the period from the date of acquisition to December 31, 2020. A cquisition of cynene apolla On February 20, 2020, December 31, 2020, We have accounted for the Icynene-Lapolla Acquisition using the acquisition method. As such, we analyzed the fair value of tangible and intangible assets acquired and liabilities assumed. The preliminary allocation of acquisition cost to the assets acquired and liabilities assumed is summarized as follows (dollars in millions): Fair value of assets acquired and liabilities assumed: Cash paid for the Icynene-Lapolla Acquisition $ 353 Cash $ 7 Accounts receivable 36 Inventories 32 Prepaid expenses and other current assets 1 Property, plant and equipment 7 Intangible assets 165 Goodwill 139 Other noncurrent assets 3 Accounts payable (13 ) Accrued liabilities (10 ) Deferred income taxes (14 ) Total fair value of net assets acquired $ 353 The acquisition cost allocation is preliminary pending final determination of the fair value of assets acquired and liabilities assumed, including final valuation of certain liabilities, property, plant and equipment, intangible assets, leases and deferred taxes. Intangible assets acquired included in this preliminary allocation consist primarily of trademarks, trade secrets and customer relationships. The applicable amortization periods are still being assessed. For purposes of this preliminary allocation of fair value, we have assigned any excess of the acquisition cost over the estimated preliminary fair value to goodwill. The estimated goodwill recognized is attributable primarily to projected future profitable growth, penetration into downstream markets and synergies. We expect that none The acquired business had revenues and net income of $199 million and $12 million, respectively, for the period from the date of acquisition to December 31, 2020. P RO F ORMA I NFORMATION FOR A CQUISITIONS O CCURRING IN 2020 If the CVC Thermoset Specialties Acquisition and the Icynene-Lapolla Acquisition were to have occurred on January 1, 2019, Pro Forma (Unaudited) Year ended December 31, 2020 2019 Revenues $ 6,080 $ 7,140 Net income 1,063 616 Net income attributable to Huntsman Corporation 1,031 580 Pro Forma (Unaudited) Year ended December 31, 2020 2019 Revenues $ 6,080 $ 7,140 Net income 1,064 605 Net income attributable to Huntsman International 1,032 569 A cquisition of emaining nterest in asol untsman oint enture On September 30, 2019, not 2019 15. not 8. The effects of changes in our ownership interest in Sasol-Huntsman on the equity attributable to Huntsman Corporation and Huntsman International are as follows (dollars in millions): Year ended December 31, 2019 2018 Net income attributable to Huntsman Corporation shareholders $ 562 $ 337 Decrease in Huntsman Corporation’s paid-in capital for purchase of 50% interest in Sasol-Huntsman (11 ) — Net transfers to noncontrolling interest (11 ) — Change from net income attributable to Huntsman Corporation shareholders and transfers to noncontrolling interest $ 551 $ 337 Year ended December 31, 2019 2018 Net income attributable to Huntsman International shareholders $ 551 $ 323 Decrease in Huntsman International’s paid-in capital for purchase of 50% interest in Sasol-Huntsman (11 ) — Net transfers to noncontrolling interest (11 ) — Change from net income attributable to Huntsman International shareholders and transfers to noncontrolling interest $ 540 $ 323 A cquisition of emilec On April 23, 2018, 2018 We have accounted for the Demilec Acquisition using the acquisition method. As such, we determined the fair value of tangible and intangible assets acquired and liabilities assumed. The allocation of acquisition cost to the assets acquired and liabilities assumed is summarized as follows (dollars in millions): Fair value of assets acquired and liabilities assumed: Cash paid for the Demilec Acquisition $ 353 Cash $ 1 Accounts receivable 31 Inventories 23 Prepaid expenses and other current assets 1 Property, plant and equipment 21 Intangible assets 177 Goodwill 140 Accounts payable (16 ) Accrued liabilities (3 ) Deferred income taxes (22 ) Total fair value of net assets acquired $ 353 Intangible assets acquired consist primarily of trademarks, trade secrets and customer relationships, all of which are being amortized over 15 years. We have assigned any excess of the acquisition cost of the fair values to goodwill. During the third 2018, The acquired business had revenues and net income of $142 million and $5 million, respectively, for the period from the date of acquisition to December 31, 2018. If this acquisition were to have occurred on January 1, 2018, Pro Forma (Unaudited) Year ended December 31, 2018 Revenues $ 7,662 Net income 639 Net income attributable to Huntsman Corporation 326 Pro Forma (Unaudited) Year ended December 31, 2018 Revenues $ 7,662 Net income 625 Net income attributable to Huntsman International 312

Note 4 - Discontinued Operation

Note 4 - Discontinued Operations and Business Dispositions	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	4. Sale of Chemical Intermediates Businesses On January 3, 2020, 2020. During the year ended December 31, 2020, December 23, 2020, 1. The following table reconciles the carrying amounts of major classes of assets and liabilities of discontinued operations to total assets and liabilities of discontinued operations that were classified as held for sale in our consolidated balance sheets (dollars in millions): December 31, 2019 Carrying amounts of major classes of assets held for sale: Accounts receivable $ 145 Inventories 105 Property, plant and equipment, net 720 Operating lease right-of-use assets 69 Deferred income taxes 4 Other noncurrent assets 165 Total assets held for sale (1) $ 1,208 Carrying amounts of major classes of liabilities held for sale: Accounts payable $ 152 Accrued liabilities 26 Current operating lease liabilities 20 Deferred income taxes 135 Noncurrent operating lease liabilities 51 Other noncurrent liabilities 128 Total liabilities held for sale (1) $ 512 ( 1 The assets and liabilities held for sale are classified as current as of December 31, 2019 January 3, 2020. The following table reconciles major line items constituting pretax income of discontinued operations to after-tax income (loss) of discontinued operations as presented in our consolidated statements of operations (dollars in millions): Year ended December 31, 2020 2019 2018 Major line items constituting pretax income of discontinued operations (1) Trade sales, services and fees, net (2) $ 7 $ 1,545 $ 3,923 Cost of goods sold (2) (37 ) 1,287 2,847 Gain on sale of the Chemical Intermediates Businesses 978 — — Other expense items, net that are not major 5 54 332 Income from discontinued operations before income taxes 1,017 204 744 Income tax expense (242 ) (35 ) (86 ) Loss on disposal — — (427 ) Valuation allowance — — (270 ) Income (loss) from discontinued operations, net of tax 775 169 (39 ) Net income attributable to noncontrolling interests — — (6 ) Net income (loss) attributable to discontinued operations $ 775 $ 169 $ (45 ) ( 1 Discontinued operations primarily include our Chemical Intermediates Businesses for all periods presented. We began accounting for our investment in Venator as an equity method investment on December 3, 2018. January 1, 2017 December 2, 2018. ( 2 Includes eliminations of trade sales, services and fees, net and cost of sales between continuing operations and discontinued operations. Separation and Deconsolidation of Venator In August 2017, December 2018, December 23, 2020, 1. no December, 2020, 2019 2018, December 31, 2020 Sale of India-Based Do-It-Yourself Consumer Adhesives Business On November 3, 2020, may 2019 fourth 2020,

Note 5 - Inventories

Note 5 - Inventories	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	5. Inventories consisted of the following (dollars in millions): December 31, 2020 2019 Raw materials and supplies $ 180 $ 175 Work in progress 44 49 Finished goods 651 718 Total 875 942 LIFO reserves (27 ) (28 ) Net inventories $ 848 $ 914 For December 31, 2020 2019

Note 6 - Property, Plant and Eq

Note 6 - Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	6. The cost and accumulated depreciation of property, plant and equipment were as follows (dollars in millions): Huntsman Corporation December 31, 2020 2019 Land $ 97 $ 103 Buildings 540 605 Plant and equipment 5,039 4,695 Construction in progress 357 285 Total 6,033 5,688 Less accumulated depreciation (3,528 ) (3,305 ) Net $ 2,505 $ 2,383 Depreciation expense for Huntsman Corporation for 2020 2019 2018 Huntsman International December 31, 2020 2019 Land $ 97 $ 103 Buildings 540 605 Plant and equipment 5,127 4,749 Construction in progress 357 285 Total 6,121 5,742 Less accumulated depreciation (3,616 ) (3,359 ) Net $ 2,505 $ 2,383 Depreciation expense for Huntsman International for 2020 2019 2018

Note 7 - Investment in Unconsol

Note 7 - Investment in Unconsolidated Affiliates	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Investment in Unconsolidated Affiliates Disclosure [Text Block]	7. Our ownership percentage and investment in unconsolidated affiliates were as follows (dollars in millions): December 31, 2020 2019 Equity Method: Venator Materials PLC(1) $ — $ 200 BASF Huntsman Shanghai Isocyanate Investment BV ( 50% 111 112 Nanjing Jinling Huntsman New Material Co., Ltd. ( 49% 229 196 Jurong Ningwu New Material Development Co., Ltd. ( 30% 33 27 Total investments $ 373 $ 535 ( 1 On December 23, 2020, no December 31, 2020, ( 2 We own 50% of BASF Huntsman Shanghai Isocyanate Investment BV. BASF Huntsman Shanghai Isocyanate Investment BV owns a 70% interest in SLIC, thus giving us an indirect 35% interest in SLIC. S F I U A Summarized financial information of our unconsolidated affiliates as of December 31, 2020 2019 December 31, 2020, 2019 2018 December 31, 2020 2019 Current assets $ 1,544 $ 1,439 Non-current assets 2,317 2,436 Current liabilities 574 688 Non-current liabilities 1,804 1,614 Noncontrolling interests 6 7 Year ended December 31, 2020 2019 2018(1) Revenues $ 3,544 $ 4,025 $ 2,181 Gross profit 338 454 221 (Loss) income from continuing operations (2 ) 99 124 Net (loss) income (2 ) 99 124 ( 1 We began accounting for our investment in Venator as an equity method investment on December 3, 2018 December 23, 2020 December 31, 2020 2019 December 3, 2018 December 31, 2018.

Note 8 - Variable Interest Enti

Note 8 - Variable Interest Entities	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Variable Interest Entity Disclosure [Text Block]	8. We evaluate our investments and transactions to identify variable interest entities for which we are the primary beneficiary. We hold a variable interest in the following joint ventures for which we are the primary beneficiary: ● Rubicon LLC is our 50%-owned joint venture with Lanxess that manufactures products for our Polyurethanes and Performance Products segments. The structure of the joint venture is such that the total equity investment at risk is not ● AAC is our 50%-owned joint venture with Zamil group that manufactures products for our Performance Products segment. As required in the operating agreement governing this joint venture, we purchase all of AAC’s production and sell it to our customers. Substantially all of the joint venture’s activities are conducted on our behalf. Sasol-Huntsman was our 50%-owned joint venture with Sasol that owned and operated a maleic anhydride facility in Moers, Germany. On September 30, 2019, not September 30, 2019, no During the year ended December 31, 2020, no Creditors of our variable interest entities have no 15. December 31, 2020 The following table summarizes the carrying amount of our variable interest entities’ assets and liabilities included in our consolidated balance sheets as of December 31, 2020 2019 December 31, 2020 2019 Current assets $ 49 $ 50 Property, plant and equipment, net 167 180 Operating lease right-of-use assets 22 16 Other noncurrent assets 138 132 Deferred income taxes 30 30 Total assets $ 406 $ 408 Current liabilities $ 183 $ 151 Long-term debt 3 29 Noncurrent operating lease liabilities 17 11 Other noncurrent liabilities 82 87 Deferred income taxes 1 — Total liabilities $ 286 $ 278 The revenues, income from continuing operations before income taxes and net cash provided by operating activities for our variable interest entities are as follows (dollars in millions): Year ended December 31, 2020 2019 (1) 2018 Revenues $ — $ 95 $ 154 Income from continuing operations before income taxes 4 17 40 Net cash provided by operating activities 10 81 65 ( 1 As of September 30, 2019, no January 1, 2019 September 30, 2019.

Note 9 - Leases

Note 9 - Leases	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Lease Disclosure [Text Block]	9 . LEASES We primarily lease manufacturing and research facilities, administrative offices, land, tanks, railcars and equipment. Leases with an initial term of 12 not nil December 31, 2020 2019, one one one None The components of operating lease expense, cash flows and supplemental noncash information from continuing operations are as follows (dollars in millions): Years Ended December 31, 2020 2019 Operating lease expense: Cost of goods sold $ 34 $ 35 Selling, general and administrative 26 15 Research and development 6 6 Total operating lease expense (1)(2) $ 66 $ 56 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 74 $ 53 Supplemental noncash information: Leased assets obtained in exchange for new operating lease liabilities $ 91 $ 416 ( 1 Total operating lease expense includes short-term lease expense of approximately $3 million and $1 million for the years ended December 31, 2020 2019, ( 2 Total operating lease expense for the year ended December 31, 2018 The weighted-average lease term and discount rate for our operating leases from continuing operations are as follows: Years Ended December 31, 2020 2019 Weighted-average remaining lease term (in years) 11 11 Weighted-average discount rate 4.0 % 4.1 % The undiscounted future cash flows of operating lease liabilities from continuing operations as of December 31, 2020 Year ending December 31, 2021 $ 68 2022 62 2023 58 2024 55 2025 51 Thereafter 276 Total lease payments 570 Less imputed interest (107 ) Total $ 463 As of December 31, 2020 not 2021 seven During November 2020, five

Note 10 - Intangible Assets

Note 10 - Intangible Assets	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	10 . INTANGIBLE ASSETS The gross carrying amount and accumulated amortization of intangible assets were as follows (dollars in millions): Huntsman Corporation December 31, 2020 December 31, 2019 Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Patents, trademarks and technology $ 316 $ 237 $ 79 $ 314 $ 230 $ 84 Licenses and other agreements 140 61 79 140 48 92 Non-compete agreements 3 2 1 3 2 1 Other intangibles(1) 349 55 294 61 41 20 Total $ 808 $ 355 $ 453 $ 518 $ 321 $ 197 Amortization expense was $33 million, $16 million and $6 million for the years ended December 31, 2020, 2019 2018 Huntsman International December 31, 2020 December 31, 2019 Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Patents, trademarks and technology $ 316 $ 237 $ 79 $ 314 $ 230 $ 84 Licenses and other agreements 140 61 79 140 48 92 Non-compete agreements 3 2 1 3 2 1 Other intangibles(1) 357 63 294 70 50 20 Total $ 816 $ 363 $ 453 $ 527 $ 330 $ 197 Amortization expense was $33 million, $16 million and $6 million for the years ended December 31, 2020, 2019 2018 ( 1 Includes provisional intangible asset fair values related to the CVC Thermoset Specialties Acquisition and the Icynene-Lapolla Acquisition. For more information, see “Note 3. Our and Huntsman International’s estimated future amortization expense for intangible assets over the next five Year ending December 31, 2021 $ 30 2022 34 2023 34 2024 34 2025 34

Note 11 - Other Noncurrent Asse

Note 11 - Other Noncurrent Assets	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Investments and Other Noncurrent Assets [Text Block]	1 1 . OTHER NONCURRENT ASSETS Other noncurrent assets consisted of the following (dollars in millions): December 31, 2020 2019 Capitalized turnaround costs, net $ 250 $ 223 Investment in Venator 32 — Catalyst assets, net 27 24 Other 239 205 Total $ 548 $ 452 Amortization expense of catalyst assets for the years ended December 31, 2020, 2019 2018

Note 12 - Accrued Liabilities

Note 12 - Accrued Liabilities	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	1 2 . ACCRUED LIABILITIES Accrued liabilities consisted of the following (dollars in millions): Huntsman Corporation December 31, 2020 2019 Payroll and related accruals $ 97 $ 100 Income taxes 73 59 Taxes other than income taxes 56 64 Volume and rebate accruals 55 53 Other miscellaneous accruals 177 144 Total $ 458 $ 420 Huntsman International December 31, 2020 2019 Payroll and related accruals $ 97 $ 100 Income taxes 73 59 Taxes other than income taxes 56 64 Volume and rebate accruals 55 53 Other miscellaneous accruals 174 141 Total $ 455 $ 417

Note 13 - Restructuring, Impair

Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits)	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	13. As of December 31, 2020, 2019 2018, Non-cancelable Other Workforce Demolition and lease and contract restructuring reductions decommissioning termination costs costs Total Accrued liabilities as of January 1, 2018 $ 5 $ 2 $ 41 $ 5 $ 53 2018 charges for 2017 and prior initiatives — — 2 — 2 2018 charges for 2018 initiatives 5 — — 10 15 2018 payments for 2017 and prior initiatives (2 ) (1 ) (2 ) — (5 ) 2018 payments for 2018 initiatives (1 ) — — (5 ) (6 ) Reversal of reserves no longer required (2 ) — (29 ) — (31 ) Accrued liabilities as of December 31, 2018 5 1 12 10 28 2019 (credits) charges for 2018 and prior initiatives 2 (1 ) 2 3 6 2019 charges for 2019 initiatives 7 — — 1 8 2019 payments for 2018 and prior initiatives (4 ) — (7 ) (9 ) (20 ) 2019 payments for 2019 initiatives — — — (1 ) (1 ) Reversal of reserves no longer required (2 ) — — (2 ) (4 ) Accrued liabilities as of December 31, 2019 8 — 7 2 17 2020 charges for 2019 and prior initiatives — — 2 3 5 2020 charges for 2020 initiatives 35 — — 3 38 2020 payments for 2019 and prior initiatives (5 ) — (7 ) (4 ) (16 ) 2020 payments for 2020 initiatives (10 ) — — (3 ) (13 ) Reversal of reserves no longer required — — — (1 ) (1 ) Foreign currency effect on liability balance 1 — — — 1 Accrued liabilities as of December 31, 2020 $ 29 $ — $ 2 $ — $ 31 Details with respect to our reserves for restructuring, impairment and plant closing costs are provided below by segment and initiative (dollars in millions): Performance Advanced Textile Corporate Polyurethanes Products Materials Effects and other Total Accrued liabilities as of January 1, 2018 $ 1 $ 1 $ 3 $ 47 $ 1 $ 53 2018 charges (credits) for 2017 and prior initiatives — 1 — (4 ) 5 2 2018 charges for 2018 initiatives — 2 3 — 10 15 2018 payments for 2017 and prior initiatives (1 ) (1 ) — — (3 ) (5 ) 2018 payments for 2018 initiatives — (1 ) — — (5 ) (6 ) Reversal of reserves no longer required — (1 ) — (29 ) (1 ) (31 ) Accrued liabilities as of December 31, 2018 — 1 6 14 7 28 2019 charges for 2018 and prior initiatives — — — 2 4 6 2019 charges for 2019 initiatives — — 7 — 1 8 2019 payments for 2018 and prior initiatives — (1 ) (2 ) (9 ) (8 ) (20 ) 2019 payments for 2019 initiatives — — (1 ) — — (1 ) Reversal of reserves no longer required — — — (4 ) — (4 ) Accrued liabilities as of December 31, 2019 — — 10 3 4 17 2020 charges (credits) for 2019 and prior initiatives — 1 (1 ) 1 4 5 2020 charges for 2020 initiatives 16 4 9 7 2 38 2020 payments for 2019 and prior initiatives (1 ) — (5 ) (2 ) (8 ) (16 ) 2020 payments for 2020 initiatives (3 ) (3 ) (3 ) (2 ) (2 ) (13 ) Reversal of reserves no longer required — — (1 ) — — (1 ) Foreign currency effect on liability balance — — — 1 — 1 Accrued liabilities as of December 31, 2020 $ 12 $ 2 $ 9 $ 8 $ — $ 31 Current portion of restructuring reserves $ 12 $ 2 $ 6 $ 6 $ — $ 26 Long-term portion of restructuring reserves — — 3 2 — 5 Details with respect to cash and noncash restructuring charges for the years ended December 31, 2020, 2019 2018 Cash charges: 2020 charges for 2019 and prior initiatives $ 5 2020 charges for 2020 initiatives 38 Reversal of reserves no longer required (1 ) Noncash charges: Accelerated depreciation 7 Total 2020 restructuring, impairment and plant closing costs $ 49 Cash charges: 2019 charges for 2018 and prior initiatives $ 6 2019 charges for 2019 initiatives 8 Reversal of reserves no longer required (4 ) Noncash charges: Gain on sale of assets (49 ) Other noncash credits (2 ) Total 2019 restructuring, impairment and plant closing costs $ (41 ) Cash charges: 2018 charges for 2017 and prior initiatives $ 2 2018 charges for 2018 initiatives 15 Noncash charges: Reversal of reserves no longer required (31 ) Other noncash charges 7 Total 2018 restructuring, impairment and plant closing costs $ (7 ) 2020 R A Beginning in the second 2020, December 31, 2020, 2021. Beginning in the third 2020, December 31, 2020, 2021. Beginning in the second 2020, December 21, 2020. Beginning in the second 2020, December 31, 2020. During 2020, December 31, 2020 2019 R A In September 2011, July 2019, third 2019, third 2019. 2018 R A In 2011, fourth 2018, 2019 2023. fourth 2018. 2018, Our Corporate and other segment recorded restructuring expense of $15 million in 2018

Note 14 - Other Noncurrent Liab

Note 14 - Other Noncurrent Liabilities	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Other Liabilities, Noncurrent Disclosure [Text Block]	1 4 . OTHER NONCURRENT LIABILITIES Other noncurrent liabilities consisted of the following (dollars in millions): Huntsman Corporation December 31, 2020 2019 Pension liabilities $ 680 $ 650 Other postretirement benefits 59 55 Employee benefit accrual 44 38 Other 127 155 Total $ 910 $ 898 Huntsman International December 31, 2020 2019 Pension liabilities $ 680 $ 650 Other postretirement benefits 59 55 Employee benefit accrual 44 38 Other 117 147 Total $ 900 $ 890

Note 15 - Debt

Note 15 - Debt	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Debt Disclosure [Text Block]	1 5 . DEBT Outstanding debt, net of debt issuance costs, of consolidated entities consisted of the following (dollars in millions): Huntsman Corporation December 31, December 31, 2020 2019 Senior Credit Facilities: Revolving facility $ — $ 40 Amounts outstanding under A/R programs — 167 Term loan — 103 Senior notes 2,047 1,963 Variable interest entities 50 65 Other 24 51 Total debt $ 2,121 $ 2,389 Total current portion of debt $ 593 $ 212 Long-term portion of debt 1,528 2,177 Total debt $ 2,121 $ 2,389 Huntsman International December 31, December 31, 2020 2019 Senior Credit Facilities: Revolving facility $ — $ 40 Amounts outstanding under A/R programs — 167 Term loan — 103 Senior notes 2,047 1,963 Variable interest entities 50 65 Other 24 51 Total debt, excluding debt to affiliates $ 2,121 $ 2,389 Total current portion of debt $ 593 $ 212 Long-term portion of debt 1,528 2,177 Total debt, excluding debt to affiliates $ 2,121 $ 2,389 Notes payable to affiliates-current — 100 Notes payable to affiliates-noncurrent — 280 Total debt $ 2,121 $ 2,769 D S D Substantially all of our debt, including the facilities described below, has been incurred by our subsidiaries (primarily Huntsman International); Huntsman Corporation is not Certain of our subsidiaries have third third Debt Issuance Costs We record debt issuance costs related to a debt liability on the balance sheets as a reduction in the face amount of that debt liability. As of December 31, 2020 2019 Revolving Credit Facility On May 21, 2018, May 2023. may In connection with entering into the Revolving Credit Facility, Huntsman International terminated all commitments and repaid all obligations under our previous $650 million senior secured revolving credit facility. In addition, we recognized a loss of early extinguishment of debt of $3 million. As of December 31, 2020 Unamortized Discounts and Committed Principal Debt Issuance Carrying Facility Amount Outstanding Costs Value Interest Rate (2) Maturity Revolving Credit Facility $ 1,200 $ — (1) $ — (1) $ — (1) USD LIBOR plus 1.50% 2023 ( 1 On December 31, 2020 ( 2 Interest rates on borrowings under the Revolving Credit Facility vary based on the type of loan and Huntsman International’s debt ratings. The then applicable interest rate as of December 31, 2020 Term Loan Credit Facility On September 24, 2019, 2019 €92 2019 not September 22, 2020 2019 A/R Programs Our A/R Programs are structured so that we transfer certain of our trade receivables to the U.S. special purpose entity (“U.S. SPE”) and the European special purpose entity (“EU SPE”) in transactions intended to be true sales or true contributions. The receivables collateralize debt incurred by the U.S. SPE and the EU SPE. In April 2019, April 2022, €150 €100 April 2022 In December 2019, January 3, 2020. In October 2020, Information regarding our A/R Programs as of December 31, 2020 Maximum Funding Amount Facility Maturity Availability (1) Outstanding Interest Rate (2) U.S. A/R Program April 2022 $ 150 $ — (3) Applicable rate plus 0.90% EU A/R Program April 2022 € 100 € — Applicable rate plus 1.30% (or approximately $123) (or approximately $0) ( 1 The amount of actual availability under our A/R Programs may ( 2 The applicable rate for our U.S. A/R Program is defined by the lender as USD LIBOR. The applicable rate for our EU A/R Program is either GBP LIBOR, USD LIBOR or EURIBOR. ( 3 As of December 31, 2020 As of December 31, 2020 December 31, 2019 Notes As of December 31, 2020 Unamortized Premiums, Discounts and Debt Notes Maturity Interest Rate Amount Outstanding Issuance Costs 2021 Senior Notes April 2021 5.125 % €445 (€445 carrying value $(545)) $ — 2022 Senior Notes November 2022 5.125 % $400 ($399 carrying value) 1 2025 Senior Notes April 2025 4.250 % €300 (€298 carrying value $(366)) 2 2029 Senior Notes February 2029 4.500 % $750 ($737 carrying value) 13 The 2021, 2022, 2025 2029 2021, 2022, 2025 2029 On March 13, 2019, 2029 “2029 March 27, 2019, 2029 2020 “2020 The 2029 May 1 November 1, May 1, 2029. may 2029 February 1, 2029 may 2029 February 1, 2029 Redemption of the 2021 On January 15, 2021, € 445 2021 not Variable Interest Entity Debt As of December 31, 2020 December 31, 2020 not not Note Payable from Huntsman International to Huntsman Corporation During the first 2020, C ompliance ith ovenants Our Revolving Credit Facility contains a financial covenant regarding the leverage ratio of Huntsman International and its subsidiaries. The Revolving Credit Facility also contains other customary covenants and events of default for credit facilities of this type. Upon an event of default that is not may may The agreements governing our A/R Programs also contain certain receivable performance metrics. Any material failure to meet the applicable A/R Programs’ metrics could lead to an early termination event under the A/R Programs, which could require us to cease our use of such facilities, prohibiting us from additional borrowings against our receivables or, at the discretion of the lenders, requiring that we repay the A/R Programs in full. An early termination event under the A/R Programs would also constitute an event of default under our Revolving Credit Facility, which could require us to pay off the balance of the Revolving Credit Facility in full and could result in the loss of our Revolving Credit Facility. We believe that we are in compliance with the covenants governing our material debt instruments, including our Revolving Credit Facility, our A/R Programs and our notes. M aturities The scheduled maturities of our debt (excluding debt to affiliates) by year as of December 31, 2020 Year ending December 31, 2021 $ 593 2022 403 2023 1 2024 2 2025 369 Thereafter 753 $ 2,121

Note 16 - Derivative Instrument

Note 16 - Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	1 6 . DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES We are exposed to market risks, such as changes in interest rates, foreign exchange rates and commodity prices. From time to time, we enter into transactions, including transactions involving derivative instruments, to manage certain of these exposures. We also hedge our net investment in certain European operations. Changes in the fair value of the hedge in the net investment of certain European operations are recorded in accumulated other comprehensive loss. I nterest ate isks Through our borrowing activities, we are exposed to interest rate risk. Such risk arises due to the structure of our debt portfolio, including the mix of fixed and floating interest rates. Actions taken to reduce interest rate risk include managing the mix and rate characteristics of various interest-bearing liabilities, as well as entering into interest rate derivative instruments. From time to time, we may January 9, 2019, six November 2019, During 2020 no twelve may F oreign xchange ate isk Our cash flows and earnings are subject to fluctuations due to exchange rate variation. Our revenues and expenses are denominated in various currencies. We enter into foreign currency derivative instruments to minimize the short-term impact of movements in foreign currency rates. Where practicable, we generally net multicurrency cash balances among our subsidiaries to help reduce exposure to foreign currency exchange rates. Certain other exposures may three not December 31, 2020 2019 one A portion of our debt is denominated in euros. We also finance certain of our non-U.S. subsidiaries with intercompany loans that are, in many cases, denominated in currencies other than the entities’ functional currency. We manage the net foreign currency exposure created by this debt through various means, including cross-currency swaps, the designation of certain intercompany loans as permanent loans because they are not Foreign currency transaction gains and losses on intercompany loans that are not We review our non-U.S. dollar denominated debt and derivative instruments to determine the appropriate amounts designated as hedges. As of December 31, 2020 €523 December 31, 2020, 2019 2018 C ommodity rices isk Inherent in our business is exposure to price changes for several commodities. However, our exposure to changing commodity prices is somewhat limited since the majority of our raw materials are acquired at posted or market related prices, and sales prices for many of our finished products are at market related prices which are largely set on a monthly or quarterly basis in line with industry practice. Consequently, we do not

Note 17 - Fair Value

Note 17 - Fair Value	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Fair Value Disclosures [Text Block]	1 7 . FAIR VALUE The fair values of our financial instruments were as follows (dollars in millions): December 31, 2020 December 31, 2019 Carrying Estimated Carrying Estimated Value Fair Value Value Fair Value Non-qualified employee benefit plan investments $ 26 $ 26 $ 28 $ 28 Option agreement for remaining Venator shares 11 11 — — Long-term debt (including current portion) (2,121 ) (2,334 ) (2,389 ) (2,544 ) The carrying amounts reported in the balance sheets of cash and cash equivalents, accounts receivable and accounts payable approximate fair value because of the immediate or short-term maturity of these financial instruments. Our investment in Venator is marked to fair value, which is obtained through market observable pricing using prevailing market prices (Level 1 2 4. 1 1 December 31, 2020 2019 not not December 31, 2020 may During the years ended December 31, 2020 2019 3 3

Note 18 - Revenue Recognition

Note 18 - Revenue Recognition	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	18. The following table disaggregates our revenue by major source for the years ended December 31, 2020, 2019 2018 2020 Polyurethanes Performance Products Advanced Materials Textile Effects Corporate and Eliminations Total Primary Geographic Markets (1) U.S. and Canada $ 1,362 $ 447 $ 217 $ 48 $ (23 ) $ 2,051 Europe 961 252 319 98 (1 ) 1,629 Asia Pacific 997 260 224 360 — 1,841 Rest of world 264 64 79 91 (1 ) 497 $ 3,584 $ 1,023 $ 839 $ 597 $ (25 ) $ 6,018 Major Product Groupings MDI urethanes $ 3,584 $ 3,584 Differentiated $ 1,023 1,023 Specialty $ 746 746 Non-specialty 93 93 Textile chemicals and dyes $ 597 597 Eliminations $ (25 ) (25 ) $ 3,584 $ 1,023 $ 839 $ 597 $ (25 ) $ 6,018 2019 Polyurethanes Performance Products Advanced Materials Textile Effects Corporate and Eliminations Total Primary Geographic Markets (1) U.S. and Canada $ 1,475 $ 531 $ 289 $ 62 $ (64 ) $ 2,293 Europe 1,051 316 410 128 (9 ) 1,896 Asia Pacific 1,078 248 269 446 (2 ) 2,039 Rest of world 307 63 76 127 (4 ) 569 $ 3,911 $ 1,158 $ 1,044 $ 763 $ (79 ) $ 6,797 Major Product Groupings MDI urethanes $ 3,911 $ 3,911 Differentiated $ 1,158 1,158 Specialty $ 891 891 Non-specialty 153 153 Textile chemicals and dyes $ 763 763 Eliminations $ (79 ) (79 ) $ 3,911 $ 1,158 $ 1,044 $ 763 $ (79 ) $ 6,797 2018 Polyurethanes Performance Products Advanced Materials Textile Effects Corporate and Eliminations Total Primary Geographic Markets(1) U.S. and Canada $ 1,426 $ 586 $ 285 $ 68 $ 122 $ 2,487 Europe 1,277 368 445 135 (16 ) 2,209 Asia Pacific 1,236 278 301 485 (24 ) 2,276 Rest of world 343 69 85 136 (1 ) 632 $ 4,282 $ 1,301 $ 1,116 $ 824 $ 81 $ 7,604 Major Product Groupings MDI urethanes $ 4,282 $ 4,282 Differentiated $ 1,301 1,301 Specialty $ 932 932 Non-specialty 184 184 Textile chemicals and dyes $ 824 824 Eliminations $ 81 81 $ 4,282 $ 1,301 $ 1,116 $ 824 $ 81 $ 7,604 ( 1 Geographic information for revenues is based upon countries into which product is sold.

Note 19 - Employee Benefit Plan

Note 19 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Retirement Benefits [Text Block]	1 9 . EMPLOYEE BENEFIT PLANS D B O P B We provide a trusteed, non contributory defined benefit pension plan (the “Plan”) that covers the majority of our U.S. employees. Effective July 1, 2004, not not Beginning July 1, 2014, April 1, 2015, January 1, 2015, August 1, 2015, Our postretirement benefit plans provide access to two 2003 not not not We sponsor defined benefit plans in a number of countries outside of the U.S. The availability of these plans, and their specific design provisions, are consistent with local competitive practices and regulations. The following table sets forth the funded status of the plans for us and Huntsman International and the amounts recognized in our consolidated balance sheets at December 31, 2020 2019 Defined Benefit Plans Other Postretirement Benefit Plans 2020 2019 2020 2019 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Plans Plans Plans Plans Plans Plans Plans Plans Change in benefit obligation Benefit obligation at beginning of year $ 1,024 $ 2,377 $ 956 $ 2,157 $ 60 $ — $ 59 $ — Service cost 21 31 20 30 1 — 1 — Interest cost 37 25 41 37 2 — 3 — Participant contributions — 6 — 6 2 — 2 — Plan amendments — — — (9 ) — — — — Foreign currency exchange rate changes — 200 — 7 — — — — Settlements/curtailments/divestitures (2 ) (10 ) 20 (2 ) — — 1 — Actuarial (gain) loss 87 116 65 224 9 — — — Benefits paid (76 ) (74 ) (78 ) (73 ) (9 ) — (6 ) — Benefit obligation at end of year $ 1,091 $ 2,671 $ 1,024 $ 2,377 $ 65 $ — $ 60 $ — Change in plan assets Fair value of plan assets at beginning of year $ 790 $ 1,960 $ 697 $ 1,751 $ — $ — $ — $ — Actual return on plan assets 99 143 107 224 — — — — Foreign currency exchange rate changes — 161 — 11 — — — — Participant contributions — 6 — 6 2 — 2 — Settlement/transfers/divestitures (1 ) (11 ) 19 (2 ) — — — — Company contributions 54 40 45 43 7 — 4 — Benefits paid (76 ) (74 ) (78 ) (73 ) (9 ) — (6 ) — Fair value of plan assets at end of year $ 866 $ 2,225 $ 790 $ 1,960 $ — $ — $ — $ — Funded status Fair value of plan assets $ 866 $ 2,225 $ 790 $ 1,960 $ — $ — $ — $ — Benefit obligation 1,091 2,671 1,024 2,377 65 — 60 — Accrued benefit cost $ (225 ) $ (446 ) $ (234 ) $ (417 ) $ (65 ) $ — $ (60 ) $ — Amounts recognized in balance sheet: Noncurrent asset $ — $ 20 $ — $ 10 $ — $ — $ — $ — Current liability (5 ) (6 ) (5 ) (6 ) (6 ) — (5 ) — Noncurrent liability (220 ) (460 ) (229 ) (421 ) (59 ) — (55 ) — Total $ (225 ) $ (446 ) $ (234 ) $ (417 ) $ (65 ) $ — $ (60 ) $ — Huntsman Corporation Defined Benefit Plans Other Postretirement Benefit Plans 2020 2019 2020 2019 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Plans Plans Plans Plans Plans Plans Plans Plans Amounts recognized in accumulated other comprehensive loss: Net actuarial loss $ 363 $ 874 $ 394 $ 840 $ 26 $ — $ 20 $ — Prior service credit (9 ) (27 ) (11 ) (32 ) (25 ) — (33 ) — Total $ 354 $ 847 $ 383 $ 808 $ 1 $ — $ (13 ) $ — Huntsman International Defined Benefit Plans Other Postretirement Benefit Plans 2020 2019 2020 2019 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Plans Plans Plans Plans Plans Plans Plans Plans Amounts recognized in accumulated other comprehensive loss: Net actuarial loss $ 363 $ 877 $ 395 $ 846 $ 26 $ — $ 20 $ — Prior service credit (9 ) (27 ) (11 ) (31 ) (25 ) — (33 ) — Total $ 354 $ 850 $ 384 $ 815 $ 1 $ — $ (13 ) $ — During 2020, During 2019, Components of net periodic benefit costs of continuing operations for the years ended December 31, 2020, 2019 2018 Huntsman Corporation Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 21 $ 20 $ 23 $ 31 $ 30 $ 32 Interest cost 37 41 39 25 37 37 Expected return on plan assets (59 ) (53 ) (54 ) (114 ) (102 ) (109 ) Amortization of prior service credit (2 ) (2 ) (2 ) (5 ) (4 ) (5 ) Amortization of actuarial loss 28 23 31 53 45 38 Settlement loss — — 2 — 1 — Net periodic benefit cost (credit) $ 25 $ 29 $ 39 $ (10 ) $ 7 $ (7 ) Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 1 $ 1 $ 2 $ — $ — $ — Interest cost 2 3 2 — — — Amortization of prior service credit (5 ) (5 ) (5 ) — — — Amortization of actuarial loss 1 1 2 — — — Net periodic benefit (credit) costs $ (1 ) $ — $ 1 $ — $ — $ — Huntsman International Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 21 $ 20 $ 23 $ 31 $ 30 $ 32 Interest cost 37 41 39 25 37 37 Expected return on plan assets (59 ) (53 ) (54 ) (114 ) (102 ) (109 ) Amortization of prior service credit (2 ) (2 ) (2 ) (5 ) (4 ) (5 ) Amortization of actuarial loss 28 23 31 57 48 41 Settlement loss — — 2 — 1 — Net periodic benefit cost (credit) $ 25 $ 29 $ 39 $ (6 ) $ 10 $ (4 ) Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 1 $ 1 $ 2 $ — $ — $ — Interest cost 2 3 2 — — — Amortization of prior service credit (5 ) (5 ) (5 ) — — — Amortization of actuarial loss 1 1 2 — — — Net periodic benefit (credit) costs $ (1 ) $ — $ 1 $ — $ — $ — The amounts recognized in net periodic benefit cost and other comprehensive income (loss) as of December 31, 2020, 2019 2018 Huntsman Corporation Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss $ 40 $ 19 $ 18 $ 87 $ 101 $ 117 Amortization of actuarial loss (28 ) (26 ) (34 ) (53 ) (45 ) (38 ) Current year prior service (credits) cost — — — — (10 ) 4 Amortization of prior service credit 2 2 2 5 4 5 Settlements (42 ) — (2 ) — 1 — Total recognized in other comprehensive income (loss) (28 ) (5 ) (16 ) 39 51 88 Amounts related to discontinued operations 17 9 (4 ) — — — Total recognized in other comprehensive income (loss) in continuing operations (11 ) 4 (20 ) 39 51 88 Net periodic benefit cost 25 29 39 (10 ) 7 (7 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 14 $ 33 $ 19 $ 29 $ 58 $ 81 Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss (gain) $ 9 $ — $ (10 ) $ — $ — $ — Amortization of actuarial loss (1 ) (1 ) (2 ) — — — Current year prior service credit — — — — — — Amortization of prior service credit 5 5 6 — — — Settlements (1 ) — — — — — Curtailment (gain) loss 2 — — — — — Total recognized in other comprehensive income (loss) 14 4 (6 ) — — — Amounts related to discontinued operations — (6 ) — — — — Total recognized in other comprehensive income (loss) in continuing operations 14 (2 ) (6 ) — — — Net periodic benefit cost (1 ) — 1 — — — Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 13 $ (2 ) $ (5 ) $ — $ — $ — Huntsman International Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss $ 40 $ 19 $ 18 $ 87 $ 101 $ 117 Amortization of actuarial loss (28 ) (26 ) (34 ) (57 ) (48 ) (41 ) Current year prior service credit — — — — (10 ) 4 Amortization of prior service credit 2 2 2 5 4 5 Settlements (42 ) — (2 ) — 1 — Curtailment (gain)/loss — — — — — — Total recognized in other comprehensive income (loss) (28 ) (5 ) (16 ) 35 48 85 Amounts related to discontinued operations 17 9 (4 ) — — — Total recognized in other comprehensive income (loss) in continuing operations (11 ) 4 (20 ) 35 48 85 Net periodic benefit cost 25 29 39 (6 ) 10 (4 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 14 $ 33 $ 19 $ 29 $ 58 $ 81 Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss $ 9 $ — $ (10 ) $ — $ — $ — Amortization of actuarial loss (1 ) (1 ) (2 ) — — — Current year prior service credit — — — — — — Amortization of prior service credit 5 5 6 — — — Settlements (1 ) — — — — — Curtailment (gain)/loss 2 — — — — — Total recognized in other comprehensive income (loss) 14 4 (6 ) — — — Amounts related to discontinued operations — (6 ) — — — — Total recognized in other comprehensive income (loss) in continuing operations 14 (2 ) (6 ) — — — Net periodic benefit cost (1 ) — 1 — — — Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 13 $ (2 ) $ (5 ) $ — $ — $ — The following weighted-average assumptions were used to determine the projected benefit obligation at the measurement date and the net periodic pension cost for the year: Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Projected benefit obligation Discount rate 2.82 % 3.59 % 4.39 % 0.69 % 1.07 % 1.75 % Rate of compensation increase 4.09 % 4.09 % 4.10 % 2.59 % 2.65 % 2.95 % Interest credit rate 5.15 % 5.15 % 5.15 % 0.33 % 0.49 % 1.04 % Net periodic pension cost Discount rate 3.59 % 4.39 % 3.74 % 1.07 % 1.75 % 1.65 % Rate of compensation increase 4.09 % 4.07 % 4.10 % 2.65 % 2.64 % 3.38 % Expected return on plan assets 7.52 % 7.52 % 7.52 % 5.89 % 5.89 % 5.88 % Interest credit rate 5.15 % 5.15 % 5.15 % 0.49 % 1.04 % 0.88 % Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Projected benefit obligation Discount rate 2.63 % 3.46 % 4.26 % 2.30 % 2.90 % 3.50 % Net periodic pension cost Discount rate 3.46 % 4.26 % 3.58 % 2.90 % 3.50 % 3.30 % The projected benefit obligation and fair value of plan assets for the defined benefit plans with projected benefit obligations in excess of plan assets as of December 31, 2020 2019 U.S. plans Non-U.S. plans 2020 2019 2020 2019 Projected benefit obligation in excess of plan assets Projected benefit obligation $ 1,091 $ 1,024 $ 2,017 $ 2,203 Fair value of plan assets 866 790 1,551 1,777 The projected benefit obligation, accumulated benefit obligation and fair value of plan assets for the defined benefit plans with an accumulated benefit obligation in excess of plan assets as of December 31, 2020 2019 U.S. plans Non-U.S. plans 2020 2019 2020 2019 Accumulated benefit obligation in excess of plan assets Projected benefit obligation $ 1,091 $ 1,024 $ 1,203 $ 1,066 Accumulated benefit obligation 1,073 1,019 1,116 991 Fair value of plan assets 866 790 746 664 Expected future contributions and benefit payments related to continuing operations are as follows (dollars in millions): U.S. Plans Non-U.S. Plans Other Other Defined Postretirement Defined Postretirement Benefit Benefit Benefit Benefit Plans Plans Plans Plans 2021 expected employer contributions To plan trusts $ 14 $ 6 $ 40 $ — Expected benefit payments 2021 59 6 86 — 2022 65 6 87 — 2023 70 5 92 — 2024 66 5 90 — 2025 100 5 92 — 2026 - 2030 316 24 493 — Our investment strategy with respect to pension assets is to pursue an investment plan that, over the long term, is expected to protect the funded status of the plan, enhance the real purchasing power of plan assets, and not Our pension plan assets are managed by outside investment managers. The investment managers value our plan assets using quoted market prices, other observable inputs or unobservable inputs. For certain assets, the investment managers obtain third 2020 3 one We have established target allocations for each asset category. Our pension plan assets are periodically rebalanced based upon our target allocations. The fair value of plan assets for the pension plans was $3.1 billion and $2.8 billion at December 31, 2020 2019 Fair Value Amounts Using Quoted prices in active Significant other Significant December 31, markets for identical observable inputs unobservable inputs Asset category 2020 assets (Level 1) (Level 2) (Level 3) U.S. pension plans: Equities $ 481 $ 315 $ 166 $ — Fixed income 323 242 81 — Real estate/other 62 — — 62 Cash — — — — Total U.S. pension plan assets $ 866 $ 557 $ 247 $ 62 Non-U.S. pension plans: Equities $ 564 $ 229 $ 335 $ — Fixed income 971 610 361 — Real estate/other 628 93 459 76 Cash 62 59 3 — Total Non-U.S. pension plan assets $ 2,225 $ 991 $ 1,158 $ 76 Fair Value Amounts Using Quoted prices in active Significant other Significant December 31, Markets for identical Observable inputs Unobservable inputs Asset category 2019 assets (Level 1) (Level 2) (Level 3) U.S. pension plans: Equities $ 422 $ 283 $ 139 $ — Fixed income 301 220 81 — Real estate/other 67 — — 67 Cash — — — — Total U.S. pension plan assets $ 790 $ 503 $ 220 $ 67 Non-U.S. pension plans: Equities $ 535 $ 228 $ 307 $ — Fixed income 847 560 287 — Real estate/other 505 99 349 57 Cash 73 72 1 — Total Non-U.S. pension plan assets $ 1,960 $ 959 $ 944 $ 57 The following table reconciles the beginning and ending balances of plan assets measured at fair value using unobservable inputs (Level 3 Real Estate/Other Year ended December 31, 2020 2019 Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3) Balance at beginning of period $ 124 $ 121 Return on pension plan assets 5 4 Purchases, sales and settlements (2 ) (1 ) Transfers into (out of) Level 3 11 — Balance at end of period $ 138 $ 124 Based upon historical returns, the expectations of our investment committee and outside advisors, the expected long-term rate of return on the pension assets is estimated to be between 5.68% and 7.53%. The asset allocation for our pension plans at December 31, 2020 2019 2021, Target Allocation Allocation at December 31, Asset category 2021 2020 2019 U.S. pension plans: Equities 54 % 56 % 54 % Fixed income 39 % 37 % 38 % Real estate/other 4 % 7 % 8 % Cash 3 % — % — % Total U.S. pension plans 100 % 100 % 100 % Non-U.S. pension plans: Equities 26 % 25 % 27 % Fixed income 48 % 44 % 43 % Real estate/other 14 % 28 % 26 % Cash 12 % 3 % 4 % Total non-U.S. pension plans 100 % 100 % 100 % Equity securities in our pension plans did not 2020 D efined C ontribution P lans —U.S. We had a money purchase pension plan that covered substantially all of our domestic employees who were hired prior to January 1, 2004. 2014, 2015, We have a salary deferral plan covering substantially all U.S. employees. Plan participants may not not not Our total combined expense for the above defined contribution plans for each of the years ended December 31, 2020, 2019 2018 D efined C ontribution lans —N on We have defined contribution plans in a variety of non-U.S. locations. All UK associates are eligible to participate in the Huntsman UK Pension Plan, a contract-based arrangement with a third five not Our total combined expense for these defined contribution plans for the years ended December 31, 2020, 2019 2018 S S D P S E R P The Huntsman Supplemental Savings Plan (the “SSP”) is a non-qualified plan covering key management employees and allows participants to defer amounts that would otherwise be paid as compensation. The participant can defer up to 75% of their salary and bonus each year. This plan also provides benefits that would be provided under the Huntsman Salary Deferral Plan if that plan were not January 1, 2005 409A 1986. The Huntsman Supplemental Executive Retirement Plan (the “SERP”) is an unfunded non-qualified pension plan established to provide certain executive employees with benefits that could not Assets of these plans are included in other noncurrent assets and as of December 31, 2020 2019 December 31, 2020, 2019 2018 S B I P On May 5, 2016, 2016 “2016 no may 2016 may may 2016 December 31, 2020 2016 24. I P International employees are covered by various post-employment arrangements consistent with local practices and regulations. Such obligations are included in other long-term liabilities in our consolidated balance sheets.

Note 20 - Income Taxes

Note 20 - Income Taxes	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	20 . INCOME TAXES The following is a summary of U.S. and non-U.S. provisions for current and deferred income taxes (dollars in millions): Huntsman Corporation Year ended December 31, 2020 2019 2018 Income tax expense (benefit): U.S. Current $ (216 ) $ (17 ) $ 57 Deferred 167 (181 ) (30 ) Non-U.S. Current 90 71 153 Deferred 5 89 (135 ) Total $ 46 $ (38 ) $ 45 Huntsman International Year ended December 31, 2020 2019 2018 Income tax expense (benefit): U.S. Current $ (215 ) $ (21 ) $ 57 Deferred 166 (179 ) (34 ) Non-U.S. Current 90 70 153 Deferred 5 89 (135 ) Total $ 46 $ (41 ) $ 41 The following schedule reconciles the differences between the U.S. federal income taxes at the U.S. statutory rate to our provision for income taxes (dollars in millions): Huntsman Corporation Year ended December 31, 2020 2019 2018 Income from continuing operations before income taxes $ 337 $ 391 $ 734 Expected tax expense at U.S. statutory rate of 21% $ 71 $ 82 $ 154 Change resulting from: State tax expense net of federal benefit (4 ) (3 ) (1 ) Non-U.S. tax rate differentials 16 9 27 Other non-U.S. tax effects, including nondeductible expenses and other withholding taxes 5 13 8 U.S. Tax Reform Act impact — (1 ) 32 Currency exchange gains/losses(net) — (5 ) (10 ) Venator investment basis difference and fair market value adjustments — (199 ) 18 Tax losses related to Venator investment — (18 ) — Non-U.S. income subject to U.S. tax not offset by U.S. foreign tax credits 7 7 16 Tax authority audits and dispute resolutions 1 (6 ) 5 Share-based compensation excess tax benefits (1 ) (4 ) (14 ) Change in valuation allowance (14 ) 56 (185 ) Deferred tax effects of non-U.S. tax rate changes (2 ) 36 (2 ) Impact of equity method investments (10 ) (13 ) (14 ) Sale of the India-based DIY business (35 ) — Non-U.S. withholding tax on repatriated earnings, net of U.S. foreign tax credits 20 6 11 Other U.S. tax effects, including nondeductible expenses and other credits (8 ) 2 — Total income tax expense (benefit) $ 46 $ (38 ) $ 45 Huntsman International Year ended December 31, 2020 2019 2018 Income from continuing operations before income taxes $ 338 $ 377 $ 716 Expected tax expense at U.S. statutory rate of 21% $ 71 $ 79 $ 150 Change resulting from: State tax expense net of federal benefit (4 ) (3 ) (1 ) Non-U.S. tax rate differentials 16 9 27 Other non-U.S. tax effects, including nondeductible expenses and other withholding taxes 5 13 8 U.S. Tax Reform Act impact — (1 ) 32 Currency exchange gains/losses(net) — (5 ) (10 ) Venator investment basis difference and fair market value adjustments — (199 ) 18 Tax losses related to Venator investment — (18 ) — Non-U.S. income subject to U.S. tax not offset by U.S. foreign tax credits 7 7 16 Tax authority audits and dispute resolutions 1 (6 ) 5 Share-based compensation excess tax benefits (1 ) (4 ) (14 ) Change in valuation allowance (14 ) 56 (185 ) Deferred tax effects of non-U.S. tax rate changes (2 ) 36 (2 ) Impact of equity method investments (10 ) (13 ) (14 ) Sale of the India-based DIY business (35 ) — — Non-U.S. withholding tax on repatriated earnings, net of U.S. foreign tax credits 20 6 11 Other U.S. tax effects, including nondeductible expenses and other credits (8 ) 2 — Total income tax expense (benefit) $ 46 $ (41 ) $ 41 During 2020, 2019 2018, 2020, 25% 25% 25% 25% 21% 2020, 2019 2018, nil, In 2019, January 1, 2019, December 31, 2019. Under the U.S. Tax Reform Act’s global intangible low-taxed income (“GILTI”) provision, our non-U.S. operations are generally subject to U.S. tax. We have elected to treat the GILTI as a current-period expense when incurred. The stated purpose of the GILTI rules is to generate additional U.S. tax related to income in non-U.S. jurisdictions which incur less than a blended 13.125% 13.125% 2020, 2019 2018 In 2017, 2018, not The 2020 The components of income (loss) from continuing operations before income taxes were as follows (dollars in millions): Huntsman Corporation Year ended December 31, 2020 2019 2018 U.S. $ (231 ) $ (106 ) $ (38 ) Non-U.S. 568 497 772 Total $ 337 $ 391 $ 734 Huntsman International Year ended December 31, 2020 2019 2018 U.S. $ (230 ) $ (120 ) $ (56 ) Non-U.S. 568 497 772 Total $ 338 $ 377 $ 716 Components of deferred income tax assets and liabilities were as follows (dollars in millions): Huntsman Corporation December 31, 2020 2019 Deferred income tax assets: Net operating loss carryforwards $ 258 $ 281 Pension and other employee compensation 184 172 Property, plant and equipment 15 15 Intangible assets 52 56 Basis difference in Venator investment 35 199 Operating leases 111 98 Capital loss carryovers 30 11 Deferred interest 28 19 Other, net 44 42 Total $ 757 $ 893 Deferred income tax liabilities: Property, plant and equipment $ (249 ) $ (218 ) Pension and other employee compensation (4 ) (1 ) Intangible assets (72 ) (27 ) Unrealized currency gains (14 ) (43 ) Operating leases (114 ) (102 ) Other, net (22 ) (8 ) Total $ (475 ) $ (399 ) Net deferred tax asset before valuation allowance $ 282 $ 494 Valuation allowance—net operating losses and other (206 ) (231 ) Net deferred tax asset $ 76 $ 263 Non-current deferred tax asset 288 292 Non-current deferred tax liability (212 ) (29 ) Net deferred tax asset $ 76 $ 263 Huntsman International December 31, 2020 2019 Deferred income tax assets: Net operating loss carryforwards $ 258 $ 281 Pension and other employee compensation 184 172 Property, plant and equipment 15 15 Intangible assets 52 56 Basis difference in Venator investment 35 199 Operating leases 111 98 Capital loss carryovers 30 11 Deferred interest 28 19 Other, net 44 42 Total $ 757 $ 893 Deferred income tax liabilities: Property, plant and equipment $ (249 ) $ (218 ) Pension and other employee compensation (4 ) (1 ) Intangible assets (72 ) (27 ) Unrealized currency gains (14 ) (43 ) Operating leases (114 ) (102 ) Other, net (24 ) (8 ) Total $ (477 ) $ (399 ) Net deferred tax asset before valuation allowance $ 280 $ 494 Valuation allowance—net operating losses and other (206 ) (231 ) Net deferred tax asset $ 74 $ 263 Non-current deferred tax asset 288 292 Non-current deferred tax liability (214 ) (29 ) Net deferred tax asset $ 74 $ 263 We evaluate deferred tax assets to determine whether it is more likely than not We have gross net operating losses (“NOLs”) of $1,037 million ($240 million tax-effected) in various non-U.S. jurisdictions. While the majority of the non-U.S. NOLs have no 2021, 2020 2019, We have gross U.S. federal NOLs of $71 million ($15 million tax-effected), which were primarily acquired through acquisitions subject to tax change of control limitations. We expect to be able to utilize the all of these NOLs, and therefore they are not Included in the $1,037 million of gross non-U.S. NOLs is $472 million ($118 million tax-effected) attributable to our Luxembourg entities. As of December 31, 2020, We have $30 million tax-effected U.S. capital loss carryovers generated in 2020. may 5 During 2019, December 31, 2023, 2020, During 2019, no not During 2018, seven second 2018. second 2018. third 2018 Uncertainties regarding expected future income in certain jurisdictions could affect the realization of deferred tax assets in those jurisdictions and result in additional valuation allowances in future periods, or, in the case of unexpected pre-tax earnings, the release of valuation allowances in future periods. The following is a summary of changes in the valuation allowance (dollars in millions): Huntsman Corporation 2020 2019 2018 Valuation allowance as of January 1 $ 231 $ 215 $ 412 Valuation allowance as of December 31 206 231 215 Net decrease (increase) 25 (16 ) 197 Foreign currency movements 6 — 3 Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances (17 ) (40 ) (15 ) Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 Components of change in valuation allowance affecting tax expense: Pre-tax income and losses in jurisdictions with valuation allowances resulting in no tax expense or benefit $ 14 $ (133 ) $ 53 Releases of valuation allowances in various jurisdictions — — 132 Establishments of valuation allowances in various jurisdictions — 77 — Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 Huntsman International 2020 2019 2018 Valuation allowance as of January 1 $ 231 $ 215 $ 412 Valuation allowance as of December 31 206 231 215 Net decrease (increase) 25 (16 ) 197 Foreign currency movements 6 — 3 Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances (17 ) (40 ) (15 ) Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 Components of change in valuation allowance affecting tax expense: Pre-tax income and losses in jurisdictions with valuation allowances resulting in no tax expense or benefit $ 14 $ (133 ) $ 53 Releases of valuation allowances in various jurisdictions — — 132 Establishments of valuation allowances in various jurisdictions — 77 — Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 The following is a reconciliation of our unrecognized tax benefits (dollars in millions): 2020 2019 Unrecognized tax benefits as of January 1 $ 28 $ 26 Gross increases and decreases—tax positions taken during a prior period 2 4 Gross increases and decreases—tax positions taken during the current period 1 1 Decreases related to settlements of amounts due to tax authorities (12 ) — Reductions resulting from the lapse of statutes of limitation (2 ) (4 ) Foreign currency movements (1 ) 1 Unrecognized tax benefits as of December 31 $ 16 $ 28 As of December 31, 2020 2019 not During 2020, 2019, 2018, not During 2020, not 2019, not 2018, not In accordance with our accounting policy, we continue to recognize interest and penalties accrued related to unrecognized tax benefits in income tax expense. Year ended December 31, 2020 2019 2018 Interest expense included in tax expense $ 1 $ 2 $ — Penalties expense included in tax expense — 2 — December 31, 2020 2019 Accrued liability for interest $ 4 $ 5 Accrued liability for penalties — 2 We conduct business globally and, as a result, we file income tax returns in U.S. federal, various U.S. state and various non-U.S. jurisdictions. The following table summarizes the tax years that remain subject to examination by major tax jurisdictions: Tax Jurisdiction Open Tax Years Belgium 2018 and later China 2010 and later France 2018 and later Germany 2016 and later Hong Kong 2014 and later India 2004 and later Italy 2015 and later Japan 2017 and later Mexico 2014 and later Spain 2013 and later Switzerland 2014 and later The Netherlands 2016 and later Thailand 2013 and later United Kingdom 2017 and later United States federal 2017 and later Certain of our U.S. and non-U.S. income tax returns are currently under various stages of audit by applicable tax authorities and the amounts ultimately agreed upon in resolution of the issues raised may We estimate that it is reasonably possible that certain of our non-U.S. unrecognized tax benefits could change within 12 months of the reporting date with a resulting decrease in the unrecognized tax benefits within a reasonably possible range of $0 million to $2 million. For the 12-month period from the reporting date, we would expect that a decrease in our unrecognized tax benefits would result in a corresponding benefit to our income tax expense. In connection with the provisions of U.S. Tax Reform, all non-U.S. earnings have generally been subject to U.S. tax and may may not

Note 21 - Commitments and Conti

Note 21 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	21 . COMMITMENTS AND CONTINGENCIES P C We have various purchase commitments extending through 2039 one 2020 no nil December 31, 2020, 2019 2018 Total purchase commitments as of December 31, 2020 Year ending December 31, 2021 $ 1,413 2022 982 2023 818 2024 696 2025 648 Thereafter 1,924 $ 6,481 L M We are a party to various proceedings instituted by private plaintiffs, governmental authorities and others arising under provisions of applicable laws, including various environmental, products liability and other laws. Except as otherwise disclosed in this report, we do not

Note 22 - Environmental, Health

Note 22 - Environmental, Health and Safety Matters	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Environmental Loss Contingency Disclosure [Text Block]	2 2 . ENVIRONMENTAL, HEALTH AND SAFETY MATTERS EHS C apital xpenditures We may December 31, 2020, 2019 2018 may E nvironmental eserves We have accrued liabilities relating to anticipated environmental cleanup obligations, site reclamation and closure costs and known penalties. Liabilities are recorded when potential liabilities are either known or considered probable and can be reasonably estimated. Our liability estimates are calculated using present value techniques as appropriate and are based upon requirements placed upon us by regulators, available facts, existing technology and past experience. The environmental liabilities do not $4 December 31, 2020 2019 December 31, 2020 2019 December 31, 2020 2019 may may not E nvironmental M atters Under the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) and similar state laws, a current or former owner or operator of real property in the U.S. may may third not not third Under the Resource Conservation and Recovery Act (“RCRA”) in the U.S. and similar state laws, we may may North Maybe Canyon Mine Remediation The North Maybe Canyon Mine site is a CERCLA site and involves a former phosphorous mine near Soda Springs, Idaho, which is believed to have been operated by several companies, including a predecessor company to us. In 2004, February 2010,

Note 23 - Huntsman Corporation

Note 23 - Huntsman Corporation Stockholders' Equity	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	2 3 . HUNTSMAN CORPORATION STOCKHOLDERS’ EQUITY S hare epurchase rogram On February 7, 2018 May 3, 2018, September 2015 may may first 2020, first 2020, 19. D C S The following tables represent dividends on common stock for our Company for the years ended December 31, 2020 2019 2020 Approximate Per share amount Quarter ended payment amount paid March 31, 2020 $ 0.1625 $ 37 June 30, 2020 0.1625 36 September 30, 2020 0.1625 36 December 31, 2020 0.1625 35 2019 Approximate Per share amount Quarter ended payment amount paid March 31, 2019 $ 0.1625 $ 39 June 30, 2019 0.1625 38 September 30, 2019 0.1625 38 December 31, 2019 0.1625 35

Note 24 - Stock-based Compensat

Note 24 - Stock-based Compensation Plan	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	2 4 . STOCK-BASED COMPENSATION PLAN Under the 2016 may may 2016 2016 may December 31, 2020 2016 three The compensation cost under the 2016 Year ended December 31, 2020 2019 2018 Huntsman Corporation compensation cost $ 27 $ 29 $ 27 Huntsman International compensation cost 26 28 26 The total income tax benefit recognized in the statement of operations for stock-based compensation arrangements was $4 million, $8 million and $18 million for the years ended December 31, 2020, 2019 2018 S O The fair value of each stock option award is estimated on the date of grant using the Black-Scholes valuation model that uses the assumptions noted in the following table. Expected volatilities are based on the historical volatility of our common stock through the grant date. The expected term of options granted was estimated based on the contractual term of the instruments and employees’ expected exercise and post-vesting employment termination behavior. The risk-free rate for periods within the contractual life of the option was based on the U.S. Treasury yield curve in effect at the time of grant. The assumptions noted below represent the weighted averages of the assumptions utilized for all stock options granted during the year. Year ended December 31, 2020 2019 2018 Dividend yield 3.0 % 2.9 % 1.6 % Expected volatility 53.1 % 54.0 % 55.2 % Risk-free interest rate 1.4 % 2.5 % 2.6 % Expected life of stock options granted during the period (in years) 5.9 5.9 5.9 A summary of stock option activity under the 2016 December 31, 2020 Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Option Awards Shares Price Term Value (in thousands) (years) (in millions) Outstanding at January 1, 2020 5,025 $ 19.08 Granted 788 21.52 Exercised (829 ) 12.81 Forfeited (169 ) 24.28 Outstanding at December 31, 2020 4,815 20.37 6.0 $ 26 Exercisable at December 31, 2020 3,371 19.23 4.9 22 The weighted-average grant-date fair value of stock options granted during 2020 2019 2018 December 31, 2020 2016 During the years ended December 31, 2020, 2019 2018 December 31, 2020, 2019 2018 December 31, 2020, 2019 2018 N S Nonvested shares granted under the 2016 The fair value of each performance share unit award is estimated using a Monte Carlo simulation model that uses various assumptions, including an expected volatility rate and a risk-free interest rate. For the years ended December 31, 2020, 2019 2018 December 31, 2020, 2019 2018 three three A summary of the status of our nonvested shares as of December 31, 2020 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, 2020 1,640 $ 24.61 427 $ 24.80 Granted 848 21.92 238 21.53 Vested (577 ) (1)(2) 25.15 (218 ) 24.64 Forfeited (44 ) 26.44 (36 ) 23.71 Nonvested at December 31, 2020 1,867 23.18 411 23.08 ( 1 As of December 31, 2020 not 2020 not not ( 2 A total of 174,200 performance share unit awards are reflected in the vested shares in this table, which represents the target number of performance share unit awards for this grant and were included in the balance at December 31, 2019 December 31, 2020 As of December 31, 2020 December 31, 2020, 2019 2018

Note 25 - Other Comprehensive (

Note 25 - Other Comprehensive (Loss) Income	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	25. INCOME Other comprehensive loss consisted of the following (dollars in millions): Huntsman Corporation Pension and Other Foreign other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2020 $ (369 ) $ (1,031 ) $ 8 $ 4 $ (1,388 ) $ 26 $ (1,362 ) Other comprehensive income (loss) before reclassifications, gross 29 (135 ) — — (106 ) (6 ) (112 ) Tax benefit 12 30 — — 42 — 42 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 111 — — 111 — 111 Tax expense — (25 ) — — (25 ) — (25 ) Net current-period other comprehensive income (loss) 41 (19 ) — — 22 (6 ) 16 Ending balance, December 31, 2020 $ (328 ) $ (1,050 ) $ 8 $ 4 $ (1,366 ) $ 20 $ (1,346 ) (a) Amounts are net of tax of $56 and $68 as of December 31, 2020 January 1, 2020 (b) Amounts are net of tax of $153 and $148 as of December 31, 2020 January 1, 2020 (c) See table below for details about these reclassifications. Pension and Other Foreign other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2019 $ (371 ) $ (994 ) $ 8 $ 5 $ (1,352 ) $ 36 $ (1,316 ) Other comprehensive (loss) income before reclassifications, gross — (112 ) — (1 ) (113 ) 5 (108 ) Tax benefit 2 25 — — 27 — 27 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 62 — — 62 — 62 Tax expense — (12 ) — — (12 ) — (12 ) Net current-period other comprehensive (loss) income 2 (37 ) — (1 ) (36 ) 5 (31 ) Acquisition of noncontrolling interest — — — — — (15 ) (15 ) Ending balance, December 31, 2019 $ (369 ) $ (1,031 ) $ 8 $ 4 $ (1,388 ) $ 26 $ (1,362 ) (a) Amounts are net of tax of $68 and $71 as of December 31, 2019 January 1, 2019 (b) Amounts are net of tax of $148 and $135 as of December 31, 2019 January 1, 2019 (c) See table below for details about these reclassifications. Amounts reclassified from accumulated other comprehensive loss Affected line item in Details about Accumulated Other Year ended December 31, where net income Comprehensive Loss Components(a): 2020 2019 2018 is presented Amortization of pension and other postretirement benefits: Prior service credit $ (12 ) $ (11 ) $ (12 ) (b) Settlement loss 43 1 2 Curtailment gain (2 ) — — Actuarial loss 82 72 87 (b)(c) 111 62 77 Total before tax (25 ) (12 ) (13 ) Income tax expense Total reclassifications for the period $ 86 $ 50 $ 64 Net of tax (a) Pension and other postretirement benefits amounts in parentheses indicate credits on our consolidated statements of operations. (b) These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 19. (c) Amounts contain approximately $5, $7 and $22 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2020, 2019 2018 Huntsman International Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2020 $ (374 ) $ (1,012 ) $ 8 $ — $ (1,378 ) $ 26 $ (1,352 ) Other comprehensive income (loss) before reclassifications, gross 29 (135 ) — — (106 ) (6 ) (112 ) Tax benefit 12 30 — — 42 — 42 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 115 — — 115 — 115 Tax expense — (26 ) — — (26 ) — (26 ) Net current-period other comprehensive (loss) income 41 (16 ) — — 25 (6 ) 19 Ending balance, December 31, 2020 $ (333 ) $ (1,028 ) $ 8 $ — $ (1,353 ) $ 20 $ (1,333 ) (a) Amounts are net of tax of $43 and $55 as of December 31, 2020 January 1, 2020 (b) Amounts are net of tax of $178 and $174 as of December 31, 2020 January 1, 2020 (c) See table below for details about these reclassifications. Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2019 $ (376 ) $ (977 ) $ 8 $ 1 $ (1,344 ) $ 36 $ (1,308 ) Other comprehensive (loss) income before reclassifications, gross — (113 ) — (1 ) (114 ) 5 (109 ) Tax benefit 2 25 — — 27 — 27 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 65 — — 65 — 65 Tax expense — (12 ) — — (12 ) — (12 ) Net current-period other comprehensive (loss) income 2 (35 ) — (1 ) (34 ) 5 (29 ) Acquisition of noncontrolling interest — — — — — (15 ) (15 ) Ending balance, December 31, 2019 $ (374 ) $ (1,012 ) $ 8 $ — $ (1,378 ) $ 26 $ (1,352 ) (a) Amounts are net of tax of $55 and $57 as of December 31, 2019 January 1, 2019 (b) Amounts are net of tax of $174 and $161 as of December 31, 2019 January 1, 2019 (c) See table below for details about these reclassifications. Amounts reclassified from accumulated other comprehensive loss Affected line item in Details about Accumulated Other Year ended December 31, where net income Comprehensive Loss Components(a): 2020 2019 2018 is presented Amortization of pension and other postretirement benefits: Prior service credit $ (12 ) $ (11 ) $ (12 ) (b) Settlement loss 43 1 2 (c) Curtailment gain (2 ) — — (c) Actuarial loss 86 75 90 (b)(c) 115 65 80 Total before tax (26 ) (12 ) (14 ) Income tax expense Total reclassifications for the period $ 89 $ 53 $ 66 Net of tax (a) Pension and other postretirement benefits amounts in parentheses indicate credits on our consolidated statements of operations. (b) These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 19. (c) Amounts contain approximately $5, $7 and $22 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2020, 2019 2018 Items of other comprehensive income (loss) of our Company and our consolidated affiliates have been recorded net of tax, with the exception of the foreign currency translation adjustments related to subsidiaries with earnings permanently reinvested. The tax effect is determined based upon the jurisdiction where the income or loss was recognized and is net of valuation allowances.

Note 26 - Related Party Transac

Note 26 - Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	2 6 . RELATED PARTY TRANSACTIONS Our consolidated financial statements include the following transactions with our affiliates not Year ended December 31, 2020 2019 2018 Sales to: Unconsolidated affiliates $ 115 $ 133 $ 153 Inventory purchases from: Unconsolidated affiliates 407 434 411

Note 27 - Operating Segment Inf

Note 27 - Operating Segment Information	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	27. We derive our revenues, earnings and cash flows from the manufacture and sale of a wide variety of differentiated and commodity chemical products. We have four The major products of each reportable operating segment are as follows: Segment Products Polyurethanes MDI, polyols, TPU and other polyurethane-related products Performance Products Specialty amines, ethyleneamines, maleic anhydride and technology licenses Advanced Materials Basic liquid and solid epoxy resins; specialty resin compounds; cross-linking, matting and curing agents; epoxy, acrylic and polyurethane-based formulations Textile Effects Textile chemicals and dyes Sales between segments are generally recognized at external market prices and are eliminated in consolidation. We use adjusted EBITDA to measure the financial performance of our global business units and for reporting the results of our operating segments. This measure includes all operating items relating to the businesses. The adjusted EBITDA of operating segments excludes items that principally apply to our Company as a whole. The revenues and adjusted EBITDA for each of our reportable operating segments are as follows (dollars in millions): Year ended December 31, 2020 2019 2018 Revenues: Polyurethanes $ 3,584 $ 3,911 $ 4,282 Performance Products 1,023 1,158 1,301 Advanced Materials 839 1,044 1,116 Textile Effects 597 763 824 Corporate and eliminations (25 ) (79 ) 81 Total $ 6,018 $ 6,797 $ 7,604 Huntsman Corporation: Segment adjusted EBITDA (1) Polyurethanes $ 472 $ 548 $ 809 Performance Products 164 168 197 Advanced Materials 130 201 225 Textile Effects 42 84 101 Corporate and other (2) (161 ) (155 ) (171 ) Total 647 846 1,161 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (86 ) (111 ) (115 ) Interest expense, net—discontinued operations — — (36 ) Income tax (expense) benefit—continuing operations (46 ) 38 (45 ) Income tax expense—discontinued operations (242 ) (35 ) (86 ) Depreciation and amortization—continuing operations (283 ) (270 ) (255 ) Depreciation and amortization—discontinued operations — (61 ) (88 ) Net income attributable to noncontrolling interests 32 36 313 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (31 ) (5 ) (9 ) Merger costs — — (2 ) EBITDA from discontinued operations 1,017 265 171 Noncontrolling interest of discontinued operations — — (232 ) Fair value adjustments to Venator investment and related loss on disposal (88 ) (18 ) (62 ) Loss on early extinguishment of debt — (23 ) (3 ) Certain legal and other settlements and related expenses (5 ) (6 ) (1 ) Gain (loss) on sale of businesses/assets 280 (21 ) — Income from transition services arrangements 7 — — Certain nonrecurring information technology project implementation costs (6 ) (4 ) — Amortization of pension and postretirement actuarial losses (76 ) (66 ) (67 ) Plant incident remediation costs (2 ) (8 ) — Restructuring, impairment and plant closing and transition (costs) credits (52 ) 41 6 Net income $ 1,066 $ 598 $ 650 Year ended December 31, 2020 2019 2018 Depreciation and Amortization: Polyurethanes $ 130 $ 120 $ 108 Performance Products 79 81 78 Advanced Materials 45 36 37 Textile Effects 16 16 16 Corporate and other 13 17 16 Total $ 283 $ 270 $ 255 Year ended December 31, 2020 2019 2018 Capital Expenditures: Polyurethanes $ 172 $ 185 $ 153 Performance Products 32 32 48 Advanced Materials 21 24 20 Textile Effects 12 22 20 Corporate and other 12 11 10 Total $ 249 $ 274 $ 251 December 31, 2020 2019 Total Assets: Polyurethanes $ 3,970 $ 3,437 Performance Products 1,062 1,125 Advanced Materials 1,002 774 Textile Effects 481 511 Corporate and other 2,198 1,265 Total $ 8,713 $ 7,112 December 31, 2020 2019 Goodwill: Polyurethanes $ 312 $ 177 Performance Products 18 16 Advanced Materials 203 83 Total $ 533 $ 276 Year ended December 31, 2020 2019 2018 Huntsman International: Segment adjusted EBITDA (1) Polyurethanes $ 472 $ 548 $ 809 Performance Products 164 168 197 Advanced Materials 130 201 225 Textile Effects 42 84 101 Corporate and other (2) (155 ) (150 ) (167 ) Total 653 851 1,165 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (88 ) (126 ) (136 ) Interest expense, net—discontinued operations — — (36 ) Income tax (expense) benefit—continuing operations (46 ) 41 (41 ) Income tax expense—discontinued operations (242 ) (35 ) (86 ) Depreciation and amortization—continuing operations (283 ) (270 ) (252 ) Depreciation and amortization—discontinued operations — (61 ) (88 ) Net income attributable to noncontrolling interests 32 36 313 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (31 ) (5 ) (9 ) Merger costs — — (2 ) EBITDA from discontinued operations 1,017 265 171 Noncontrolling interest of discontinued operations — — (232 ) Fair value adjustments to Venator investment and related loss on disposal (88 ) (18 ) (62 ) Loss on early extinguishment of debt — (23 ) (3 ) Certain legal and other settlements and related expenses (5 ) (6 ) (1 ) Gain (loss) on sale of businesses/assets 280 (21 ) — Income from transition services arrangements 7 — — Certain nonrecurring information technology project implementation costs (6 ) (4 ) — Amortization of pension and postretirement actuarial losses (79 ) (70 ) (71 ) Plant incident remediation costs (2 ) (8 ) — Restructuring, impairment and plant closing and transition (costs) credits (52 ) 41 6 Net income $ 1,067 $ 587 $ 636 Year ended December 31, 2020 2019 2018 Depreciation and Amortization: Polyurethanes $ 130 $ 120 $ 108 Performance Products 79 81 78 Advanced Materials 45 36 37 Textile Effects 16 16 16 Corporate and other 13 17 13 Total $ 283 $ 270 $ 252 Year ended December 31, 2020 2019 2018 Capital Expenditures: Polyurethanes $ 172 $ 185 $ 153 Performance Products 32 32 48 Advanced Materials 21 24 20 Textile Effects 12 22 20 Corporate and other 12 11 10 Total $ 249 $ 274 $ 251 December 31, 2020 2019 Total Assets: Polyurethanes $ 3,970 $ 3,437 Performance Products 1,062 1,125 Advanced Materials 1,002 774 Textile Effects 481 511 Corporate and other 2,241 1,668 Total $ 8,756 $ 7,515 December 31, 2020 2019 Goodwill: Polyurethanes $ 312 $ 177 Performance Products 18 16 Advanced Materials 203 83 Total $ 533 $ 276 ( 1 We use segment adjusted EBITDA as the measure of each segment’s profit or loss. We believe that segment adjusted EBITDA more accurately reflects what the chief operating decision maker uses to make decisions about resources to be allocated to the segments and assess their financial performance. Segment adjusted EBITDA is defined as net income of Huntsman Corporation or Huntsman International, as appropriate, before interest, income tax, depreciation and amortization, net income attributable to noncontrolling interests and certain Corporate and other items, as well as eliminating the following adjustments: (a) business acquisition and integration expenses and purchase accounting inventory adjustments; (b) merger costs; (c) EBITDA from discontinued operations; (d) noncontrolling interest of discontinued operations; (e) fair value adjustments to Venator investment and related loss on disposal; (f) loss on early extinguishment of debt; (g) certain legal and other settlements and related expenses; (h) gain (loss) on sale of businesses/assets; (i) income from transition services arrangements related to the sale of our Chemical Intermediates Businesses to Indorama; (j) certain nonrecurring information technology project implementation costs; (k) amortization of pension and postretirement actuarial losses; (l) plant incident remediation costs; and (m) restructuring, impairment, plant closing and transition (costs) credits . ( 2 Corporate and other includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, nonoperating income and expense and gains and losses on the disposition of corporate assets. Year ended December 31, 2020 2019 2018 Revenues by geographic area (1) United States $ 1,863 $ 2,025 $ 2,136 China 1,115 1,076 1,260 Germany 388 541 537 India 211 319 352 Other nations 2,441 2,836 3,319 Total $ 6,018 $ 6,797 $ 7,604 December 31, 2020 2019 Long-lived assets (2) United States $ 1,078 $ 970 The Netherlands 368 334 China 251 247 Germany 144 137 Saudi Arabia 143 154 Singapore 90 94 Switzerland 73 106 Other nations 358 341 Total $ 2,505 $ 2,383 ( 1 Geographic information for revenues is based upon countries into which product is sold. ( 2 Long-lived assets consist of property, plant and equipment, net.

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of Registrant	12 Months Ended
	Dec. 31, 2020
Notes to Financial Statements
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	Schedule I—Condensed Financial Information of Registrant HUNTSMAN CORPORATION (Parent Only) BALANCE SHEETS (In Millions, Except Share and Per Share Amounts) December 31, 2020 2019 ASSETS Cash and cash equivalents $ 2 $ — Prepaid assets 2 1 Receivable from affiliate 3 86 Note receivable from affiliate — 100 Total current assets 7 187 Note receivable from affiliate-noncurrent — 280 Investment in and advances to affiliates 3,561 2,626 Total assets $ 3,568 $ 3,093 LIABILITIES AND STOCKHOLDERS’ EQUITY Payable to affiliate $ 39 $ 396 Accrued liabilities 3 3 Total current liabilities 42 399 Other noncurrent liabilities 7 7 Total liabilities 49 406 STOCKHOLDERS’ EQUITY Common stock $0.01 par value, 1,200,000,000 shares authorized, 258,520,411 and 257,405,496 shares issued and 220,046,262 and 224,295,868 shares outstanding, respectively 3 3 Additional paid-in capital 4,048 4,008 Treasury stock, 38,477,091 and 33,112,572 shares, respectively (731 ) (635 ) Unearned stock-based compensation (19 ) (17 ) Retained earnings 1,564 690 Accumulated other comprehensive loss (1,346 ) (1,362 ) Total stockholders’ equity 3,519 2,687 Total liabilities and stockholders’ equity $ 3,568 $ 3,093 This statement should be read in conjunction with the notes to the consolidated financial statements. HUNTSMAN CORPORATION (Parent Only) STATEMENTS OF OPERATIONS (In Millions) Year ended December 31, 2020 2019 2018 Selling, general and administrative expenses $ (6 ) $ (5 ) $ (4 ) Interest income 2 15 21 Equity in income of subsidiaries 892 401 163 Dividend income—affiliate 144 148 154 Other income 2 3 3 Net income $ 1,034 $ 562 $ 337 This statement should be read in conjunction with the notes to the consolidated financial statements. HUNTSMAN CORPORATION (Parent Only) STATEMENTS OF COMPREHENSIVE INCOME (In Millions) Year ended December 31, 2020 2019 2018 Net income $ 1,034 $ 562 $ 337 Other comprehensive income, net of tax: Foreign currency translations adjustments 41 2 (192 ) Pension and other postretirement benefits adjustments (19 ) (37 ) (39 ) Other, net 32 35 304 Other comprehensive income, net of tax 54 — 73 Comprehensive income 1,088 562 410 Comprehensive income attributable to noncontrolling interests (38 ) (31 ) (266 ) Comprehensive income attributable to Huntsman Corporation $ 1,050 $ 531 $ 144 This statement should be read in conjunction with the notes to the consolidated financial statements. HUNTSMAN CORPORATION (Parent Only) STATEMENTS OF STOCKHOLDERS’ EQUITY (In Millions, Except Share Amounts) Huntsman Corporation Stockholders’ Equity Accumulated Shares Additional Unearned other Common Common paid-in Treasury stock-based Retained comprehensive Total stock stock capital stock compensation earnings loss equity Beginning balance, January 1, 2018 240,213,606 $ 3 $ 3,889 $ (150 ) $ (15 ) $ 161 $ (1,268 ) $ 2,620 Cumulative effect of changes in fair value of equity investments — — — — — 10 (10 ) — Net income — — — — — 337 — 337 Other comprehensive loss — — — — — — (198 ) (198 ) Issuance of nonvested stock awards — — 14 — (14 ) — — — Vesting of stock awards 1,135,003 — 11 — — — — 11 Recognition of stock-based compensation — — 8 — 13 — — 21 Repurchase and cancellation of stock awards (259,643 ) — — — — (30 ) — (30 ) Stock options exercised 2,310,663 — 46 — — (29 ) — 17 Treasury stock repurchased (10,405,457 ) — — (277 ) — — — (277 ) Disposition of a portion of Venator — — 18 — — — — 18 Costs of the secondary offering of Venator — — (2 ) — — — — (2 ) Deconsolidation of Venator — — — — — — 160 160 Accrued and unpaid dividends — — — — — (1 ) — (1 ) Dividends declared on common stock — — — — — (156 ) — (156 ) Balance, December 31, 2018 232,994,172 3 3,984 (427 ) (16 ) 292 (1,316 ) 2,520 Net income — — — — — 562 — 562 Other comprehensive loss — — — — — — (46 ) (46 ) Issuance of nonvested stock awards — — 17 — (17 ) — — — Vesting of stock awards 1,643,368 — 7 — — — — 7 Recognition of stock-based compensation — — 7 — 16 — — 23 Repurchase and cancellation of stock awards (488,441 ) — — — — (12 ) — (12 ) Stock options exercised 246,661 — 4 — — (2 ) — 2 Treasury stock repurchased (10,099,892 ) — — (208 ) — — — (208 ) Acquisition of noncontrolling interests, net of tax — — (11 ) — — — — (11 ) Dividends declared on common stock — — — — — (150 ) — (150 ) Balance, December 31, 2019 224,295,868 3 4,008 (635 ) (17 ) 690 (1,362 ) 2,687 Net income — — — — — 1,034 — 1,034 Other comprehensive loss — — — — — — 16 16 Issuance of nonvested stock awards — — 18 — (18 ) — — — Vesting of stock awards 960,406 — 5 — — — — 5 Recognition of stock-based compensation — — 7 — 16 — — 23 Repurchase and cancellation of stock awards (287,247 ) — — — — (8 ) — (8 ) Stock options exercised 441,754 — 10 — — (7 ) — 3 Treasury stock repurchased (5,364,519 ) — — (96 ) — — — (96 ) Dividends declared on common stock — — — — — (145 ) — (145 ) Balance, December 31, 2020 220,046,262 $ 3 $ 4,048 $ (731 ) $ (19 ) $ 1,564 $ (1,346 ) $ 3,519 This statement should be read in conjunction with the notes to the consolidated financial statements. HUNTSMAN CORPORATION (Parent Only) STATEMENTS OF CASH FLOWS (In Millions) Year ended December 31, 2020 2019 2018 Operating Activities: Net income $ 1,034 $ 562 $ 337 Equity in income of subsidiaries (892 ) (401 ) (163 ) Stock-based compensation 1 1 1 Noncash interest income (2 ) (15 ) (21 ) Changes in operating assets and liabilities (1 ) 13 19 Net cash provided by operating activities 140 160 173 Investing Activities: Repayments of loan by affiliate 380 207 255 Net cash provided by investing activities 380 207 255 Financing Activities: Dividends paid to common stockholders (144 ) (150 ) (156 ) Repurchase and cancellation of stock awards (8 ) (12 ) (30 ) Proceeds from issuance of common stock 3 2 17 Repurchase of common stock (96 ) (208 ) (277 ) (Decrease) increase in payable to affiliates (273 ) 1 16 Net cash used in financing activities (518 ) (367 ) (430 ) Increase (decrease) in cash and cash equivalents 2 — (2 ) Cash and cash equivalents at beginning of period — — 2 Cash and cash equivalents at end of period $ 2 $ — $ — This statement should be read in conjunction with the notes to the consolidated financial statements.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]	C arrying alue of ong ived ssets We review long-lived assets and all amortizable intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of these assets may not
Cash and Cash Equivalents, Policy [Policy Text Block]	C ash and ash quivalents We consider cash in checking accounts and cash in short-term highly liquid investments with original maturities of three
Cost of Goods and Service [Policy Text Block]	C ost of oods old We classify the costs of manufacturing and distributing our products as cost of goods sold. Manufacturing costs include variable costs, primarily raw materials and energy, and fixed expenses directly associated with production. Manufacturing costs also include, among other things, plant site operating costs and overhead (including depreciation), production planning and logistics costs, repair and maintenance costs, plant site purchasing costs, and engineering and technical support costs. Distribution, freight and warehousing costs are also included in cost of goods sold.
Derivatives, Policy [Policy Text Block]	D erivatives and edging ctivities All derivatives, whether designated in hedging relationships or not, three not not
Environmental Cost, Expense Policy [Policy Text Block]	E nvironmental xpenditures Environmental related restoration and remediation costs are recorded as liabilities when site restoration and environmental remediation and clean-up obligations are either known or considered probable and the related costs can be reasonably estimated. Other environmental expenditures that are principally maintenance or preventative in nature are recorded when expended and incurred and are expensed or capitalized as appropriate. See “Note 22.
Equity Method Investments [Policy Text Block]	E quity ethod nvestments We account for our equity investments where we own a non-controlling interest, but exercise significant influence, under the equity method of accounting. Under the equity method of accounting, our original cost of the investment is adjusted for our share of equity in the earnings of the equity investee and reduced by dividends and distributions of capital received, unless the fair value option is elected, in which case the investment balance is marked to fair value each reporting period and the impact of changes in fair value of the equity investment are reported in earnings.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	F oreign urrency ranslation The accounts of our operating subsidiaries outside of the U.S., unless they are operating in highly inflationary economic environments, consider the functional currency to be the currency of the economic environment in which they operate. Accordingly, assets and liabilities are translated at rates prevailing at the balance sheet date. Revenues, expenses, gains and losses are translated at a weighted average rate for the period. Cumulative translation adjustments are recorded to equity as a component of accumulated other comprehensive loss. If a subsidiary operates in an economic environment that is considered to be highly inflationary (100% cumulative inflation over a three Foreign currency transaction gains and losses are recorded in other operating (income) expense, net in our consolidated statements of operations and were (losses) gains of $2 million, $(8) million and $3 million for the years ended December 31, 2020, 2019 2018
Income Tax, Policy [Policy Text Block]	I ncome axes We use the asset and liability method of accounting for income taxes. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial and tax reporting purposes. We evaluate deferred tax assets to determine whether it is more likely than not On December 22, 2017, January 1, 2018), January 1, 2018) In 2017, 2018, not Accounting for uncertainty in income taxes prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The application of income tax law is inherently complex. We are required to determine if an income tax position meets the criteria of more-likely-than- not not 20.
Goodwill and Intangible Assets, Policy [Policy Text Block]	I ntangible ssets and oodwill Intangible assets are stated at cost (fair value at the time of acquisition) and are amortized using the straight-line method over the estimated useful lives or the life of the related agreement as follows: In Years Patents and technology 5 - 30 Trademarks 9 - 30 Licenses and other agreements 5 - 15 Other intangibles 5 - 20 Goodwill represents costs in excess of fair values assigned to the underlying net assets of acquired businesses. Goodwill is not third not During 2020 3. 2019,
Inventory, Policy [Policy Text Block]	I nventories Inventories are stated at the lower of cost or market, with cost determined using LIFO, first first
Lessee, Leases [Policy Text Block]	L eases On January 1, 2019, No. 2018 11, three The determination of whether a contract is or contains a lease is performed at the lease inception date. Lease right-of-use assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term, using incremental borrowing rates as the implicit rates are not 9.
Legal Costs, Policy [Policy Text Block]	L egal osts We expense legal costs, including those legal costs incurred in connection with a loss contingency, as incurred.
Earnings Per Share, Policy [Policy Text Block]	N et ncome er hare ttributable to untsman orporation Basic income per share excludes dilution and is computed by dividing net income attributable to Huntsman Corporation common stockholders by the weighted average number of shares outstanding during the period. Diluted income per share reflects all potential dilutive common shares outstanding during the period and is computed by dividing net income available to Huntsman Corporation common stockholders by the weighted average number of shares outstanding during the period increased by the number of additional shares that would have been outstanding as dilutive securities. Basic and diluted income per share is determined using the following information (in millions): Year ended December 31, 2020 2019 2018 Numerator: Basic and diluted income from continuing operations: Income from continuing operations attributable to Huntsman Corporation $ 259 $ 393 $ 608 Basic and diluted net income: Net income attributable to Huntsman Corporation $ 1,034 $ 562 $ 337 Denominator: Weighted average shares outstanding 220.6 228.9 238.1 Dilutive shares: Stock-based awards 1.3 1.7 3.5 Total weighted average shares outstanding, including dilutive shares 221.9 230.6 241.6 Additional stock-based awards of 4.3 million, 3.0 million and 0.8 million weighted average equivalent shares of stock were outstanding during the years ended December 31, 2020, 2019 2018 not
Other Noncurrent Assets [Policy Text Block]	O ther oncurrent ssets Periodic maintenance and repairs applicable to major units of manufacturing facilities (a “turnaround”) are accounted for on the deferral basis by capitalizing the costs of the turnaround and amortizing the costs over the estimated period until the next turnaround.
Consolidation, Policy [Policy Text Block]	P rinciples of onsolidation Our consolidated financial statements include the accounts of our wholly owned and majority owned subsidiaries and any variable interest entities for which we are the primary beneficiary. All intercompany accounts and transactions have been eliminated.
Property, Plant and Equipment, Policy [Policy Text Block]	P roperty, lant and quipment Property, plant and equipment is stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives or lease term as follows: In Years Buildings and equipment 5 - 50 Plant and equipment 3 - 30 Furniture, fixtures and leasehold improvements 5 - 20 Interest expense capitalized as part of plant and equipment was $7 million, $4 million and $4 million for the years ended December 31, 2020, 2019 2018 Normal maintenance and repairs of plant and equipment are charged to expense as incurred. Renewals, betterments and major repairs that materially extend the useful life of the assets are capitalized, and the assets replaced, if any, are retired.
Revenue from Contract with Customer [Policy Text Block]	R evenue ecognition We generate substantially all of our revenue through product sales in which revenue is recognized at a point in time. We recognize revenue when control of the promised goods is transferred to our customers. Control of goods usually passes to the customer at the time shipment is made. Revenue is measured as the amount that reflects the consideration that we expect to be entitled to in exchange for those goods. We generate substantially all of our revenues through sales in the open market and long-term supply agreements. We recognize revenue when control of the promised goods is transferred to our customers. Control of goods usually passes to the customer at the time shipment is made. Revenue is measured as the amount that reflects the consideration that we expect to be entitled to in exchange for those goods. Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue. Incidental items that are immaterial in the context of the contract are recognized as expense. We have elected to account for all shipping and handling activities as fulfillment costs. We have also elected to expense commissions when incurred as the amortization period of the commission asset that we would have otherwise recognized is less than one Substantially all of our revenue is generated through product sales in which revenue is recognized at a point in time. At contract inception, we assess the goods and services, if any, promised in our contracts and identify a performance obligation for each promise to transfer to the customer a good or service that is distinct. In substantially all cases, a contract has a single performance obligation to deliver a promised good to the customer. Revenue is recognized when control of the product is transferred to the customer (i.e., when our performance obligation is satisfied), which typically occurs at shipment. Further, in determining whether control has transferred, we consider if there is a present right to payment and legal title, along with risks and rewards of ownership having transferred to the customer. The amount of consideration we receive and revenue we recognize is based upon the terms stated in the sales contract, which may not one one not not 18.
Transfers and Servicing of Financial Assets, Policy [Policy Text Block]	S ecuritization of ccounts eceivable Under our A/R Programs, we grant an undivided interest in certain of our trade receivables to the special purpose entities (“SPE”) in the U.S. and EU. This undivided interest serves as security for the issuance of debt. The A/R Programs provide for financing in both U.S. dollars and euros. The amounts outstanding under our A/R Programs are accounted for as secured borrowings. See “Note 15.
Share-based Payment Arrangement [Policy Text Block]	S tock ased ompensation We measure the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. That cost, net of estimated forfeitures, will be recognized over the period during which the employee is required to provide services in exchange for the award. See “Note 24.
Use of Estimates, Policy [Policy Text Block]	U E The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
New Accounting Pronouncements, Policy [Policy Text Block]	A P A D 2020 We adopted the following accounting pronouncements during 2020, not ● Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2016 13, Financial Instruments—Credit Losses (Topic 326 ● FASB ASU No. 2018 14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 715 20 ● FASB ASU No. 2018 15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350 40 ● FASB ASU No. 2020 04, Reference Rate Reform (Topic 848 A P P A F uture P Eriods The following accounting pronouncement becomes effective subsequent to fiscal year 2020, not ● FASB ASU No. 2021 01, Reference Rate Reform (Topic 848

Note 2 - Summary of Significa_2

Note 2 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Useful Life of Finite-lived Intangible Assets [Table Text Block]	In Years Patents and technology 5 - 30 Trademarks 9 - 30 Licenses and other agreements 5 - 15 Other intangibles 5 - 20
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year ended December 31, 2020 2019 2018 Numerator: Basic and diluted income from continuing operations: Income from continuing operations attributable to Huntsman Corporation $ 259 $ 393 $ 608 Basic and diluted net income: Net income attributable to Huntsman Corporation $ 1,034 $ 562 $ 337 Denominator: Weighted average shares outstanding 220.6 228.9 238.1 Dilutive shares: Stock-based awards 1.3 1.7 3.5 Total weighted average shares outstanding, including dilutive shares 221.9 230.6 241.6
Schedule of Property, Plant and Equipment, Useful Life [Table Text Block]	In Years Buildings and equipment 5 - 50 Plant and equipment 3 - 30 Furniture, fixtures and leasehold improvements 5 - 20

Note 3 - Business Combination_2

Note 3 - Business Combinations and Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Fair value of assets acquired and liabilities assumed: Cash paid for the CVC Thermoset Specialties Acquisition $ 304 Accounts receivable $ 12 Inventories 37 Property, plant and equipment 67 Intangible assets 117 Goodwill 120 Accounts payable (7 ) Accrued liabilities (1 ) Deferred income taxes (41 ) Total fair value of net assets acquired $ 304 Fair value of assets acquired and liabilities assumed: Cash paid for the Icynene-Lapolla Acquisition $ 353 Cash $ 7 Accounts receivable 36 Inventories 32 Prepaid expenses and other current assets 1 Property, plant and equipment 7 Intangible assets 165 Goodwill 139 Other noncurrent assets 3 Accounts payable (13 ) Accrued liabilities (10 ) Deferred income taxes (14 ) Total fair value of net assets acquired $ 353 Fair value of assets acquired and liabilities assumed: Cash paid for the Demilec Acquisition $ 353 Cash $ 1 Accounts receivable 31 Inventories 23 Prepaid expenses and other current assets 1 Property, plant and equipment 21 Intangible assets 177 Goodwill 140 Accounts payable (16 ) Accrued liabilities (3 ) Deferred income taxes (22 ) Total fair value of net assets acquired $ 353
Business Acquisition, Pro Forma Information [Table Text Block]	Pro Forma (Unaudited) Year ended December 31, 2020 2019 Revenues $ 6,080 $ 7,140 Net income 1,063 616 Net income attributable to Huntsman Corporation 1,031 580 Pro Forma (Unaudited) Year ended December 31, 2020 2019 Revenues $ 6,080 $ 7,140 Net income 1,064 605 Net income attributable to Huntsman International 1,032 569 Pro Forma (Unaudited) Year ended December 31, 2018 Revenues $ 7,662 Net income 639 Net income attributable to Huntsman Corporation 326 Pro Forma (Unaudited) Year ended December 31, 2018 Revenues $ 7,662 Net income 625 Net income attributable to Huntsman International 312
Schedule of Effects of Changes in Ownership Interest in Joint Venture [Table Text Block]	Year ended December 31, 2019 2018 Net income attributable to Huntsman Corporation shareholders $ 562 $ 337 Decrease in Huntsman Corporation’s paid-in capital for purchase of 50% interest in Sasol-Huntsman (11 ) — Net transfers to noncontrolling interest (11 ) — Change from net income attributable to Huntsman Corporation shareholders and transfers to noncontrolling interest $ 551 $ 337 Year ended December 31, 2019 2018 Net income attributable to Huntsman International shareholders $ 551 $ 323 Decrease in Huntsman International’s paid-in capital for purchase of 50% interest in Sasol-Huntsman (11 ) — Net transfers to noncontrolling interest (11 ) — Change from net income attributable to Huntsman International shareholders and transfers to noncontrolling interest $ 540 $ 323

Note 4 - Discontinued Operati_2

Note 4 - Discontinued Operations and Business Dispositions (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Disposal Groups, Including Discontinued Operations [Table Text Block]	December 31, 2019 Carrying amounts of major classes of assets held for sale: Accounts receivable $ 145 Inventories 105 Property, plant and equipment, net 720 Operating lease right-of-use assets 69 Deferred income taxes 4 Other noncurrent assets 165 Total assets held for sale (1) $ 1,208 Carrying amounts of major classes of liabilities held for sale: Accounts payable $ 152 Accrued liabilities 26 Current operating lease liabilities 20 Deferred income taxes 135 Noncurrent operating lease liabilities 51 Other noncurrent liabilities 128 Total liabilities held for sale (1) $ 512 Year ended December 31, 2020 2019 2018 Major line items constituting pretax income of discontinued operations (1) Trade sales, services and fees, net (2) $ 7 $ 1,545 $ 3,923 Cost of goods sold (2) (37 ) 1,287 2,847 Gain on sale of the Chemical Intermediates Businesses 978 — — Other expense items, net that are not major 5 54 332 Income from discontinued operations before income taxes 1,017 204 744 Income tax expense (242 ) (35 ) (86 ) Loss on disposal — — (427 ) Valuation allowance — — (270 ) Income (loss) from discontinued operations, net of tax 775 169 (39 ) Net income attributable to noncontrolling interests — — (6 ) Net income (loss) attributable to discontinued operations $ 775 $ 169 $ (45 )

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 2020 2019 Raw materials and supplies $ 180 $ 175 Work in progress 44 49 Finished goods 651 718 Total 875 942 LIFO reserves (27 ) (28 ) Net inventories $ 848 $ 914

Note 6 - Property, Plant and _2

Note 6 - Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, 2020 2019 Land $ 97 $ 103 Buildings 540 605 Plant and equipment 5,039 4,695 Construction in progress 357 285 Total 6,033 5,688 Less accumulated depreciation (3,528 ) (3,305 ) Net $ 2,505 $ 2,383 December 31, 2020 2019 Land $ 97 $ 103 Buildings 540 605 Plant and equipment 5,127 4,749 Construction in progress 357 285 Total 6,121 5,742 Less accumulated depreciation (3,616 ) (3,359 ) Net $ 2,505 $ 2,383

Note 7 - Investment in Uncons_2

Note 7 - Investment in Unconsolidated Affiliates (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Investments in and Advances to Affiliates [Table Text Block]	December 31, 2020 2019 Equity Method: Venator Materials PLC(1) $ — $ 200 BASF Huntsman Shanghai Isocyanate Investment BV ( 50% 111 112 Nanjing Jinling Huntsman New Material Co., Ltd. ( 49% 229 196 Jurong Ningwu New Material Development Co., Ltd. ( 30% 33 27 Total investments $ 373 $ 535
Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block]	December 31, 2020 2019 Current assets $ 1,544 $ 1,439 Non-current assets 2,317 2,436 Current liabilities 574 688 Non-current liabilities 1,804 1,614 Noncontrolling interests 6 7 Year ended December 31, 2020 2019 2018(1) Revenues $ 3,544 $ 4,025 $ 2,181 Gross profit 338 454 221 (Loss) income from continuing operations (2 ) 99 124 Net (loss) income (2 ) 99 124

Note 8 - Variable Interest En_2

Note 8 - Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Variable Interest Entities [Table Text Block]	December 31, 2020 2019 Current assets $ 49 $ 50 Property, plant and equipment, net 167 180 Operating lease right-of-use assets 22 16 Other noncurrent assets 138 132 Deferred income taxes 30 30 Total assets $ 406 $ 408 Current liabilities $ 183 $ 151 Long-term debt 3 29 Noncurrent operating lease liabilities 17 11 Other noncurrent liabilities 82 87 Deferred income taxes 1 — Total liabilities $ 286 $ 278 Year ended December 31, 2020 2019 (1) 2018 Revenues $ — $ 95 $ 154 Income from continuing operations before income taxes 4 17 40 Net cash provided by operating activities 10 81 65

Note 9 - Leases (Tables)

Note 9 - Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Lease, Cost [Table Text Block]	Years Ended December 31, 2020 2019 Operating lease expense: Cost of goods sold $ 34 $ 35 Selling, general and administrative 26 15 Research and development 6 6 Total operating lease expense (1)(2) $ 66 $ 56 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 74 $ 53 Supplemental noncash information: Leased assets obtained in exchange for new operating lease liabilities $ 91 $ 416
Lease Quantitative Disclosure [Table Text Block]	Years Ended December 31, 2020 2019 Weighted-average remaining lease term (in years) 11 11 Weighted-average discount rate 4.0 % 4.1 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Year ending December 31, 2021 $ 68 2022 62 2023 58 2024 55 2025 51 Thereafter 276 Total lease payments 570 Less imputed interest (107 ) Total $ 463

Note 10 - Intangible Assets (Ta

Note 10 - Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2020 December 31, 2019 Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Patents, trademarks and technology $ 316 $ 237 $ 79 $ 314 $ 230 $ 84 Licenses and other agreements 140 61 79 140 48 92 Non-compete agreements 3 2 1 3 2 1 Other intangibles(1) 349 55 294 61 41 20 Total $ 808 $ 355 $ 453 $ 518 $ 321 $ 197 December 31, 2020 December 31, 2019 Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Patents, trademarks and technology $ 316 $ 237 $ 79 $ 314 $ 230 $ 84 Licenses and other agreements 140 61 79 140 48 92 Non-compete agreements 3 2 1 3 2 1 Other intangibles(1) 357 63 294 70 50 20 Total $ 816 $ 363 $ 453 $ 527 $ 330 $ 197
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year ending December 31, 2021 $ 30 2022 34 2023 34 2024 34 2025 34

Note 11 - Other Noncurrent As_2

Note 11 - Other Noncurrent Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Other Assets, Noncurrent [Table Text Block]	December 31, 2020 2019 Capitalized turnaround costs, net $ 250 $ 223 Investment in Venator 32 — Catalyst assets, net 27 24 Other 239 205 Total $ 548 $ 452

Note 12 - Accrued Liabilities (

Note 12 - Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	December 31, 2020 2019 Payroll and related accruals $ 97 $ 100 Income taxes 73 59 Taxes other than income taxes 56 64 Volume and rebate accruals 55 53 Other miscellaneous accruals 177 144 Total $ 458 $ 420 December 31, 2020 2019 Payroll and related accruals $ 97 $ 100 Income taxes 73 59 Taxes other than income taxes 56 64 Volume and rebate accruals 55 53 Other miscellaneous accruals 174 141 Total $ 455 $ 417

Note 13 - Restructuring, Impa_2

Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits) (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	Non-cancelable Other Workforce Demolition and lease and contract restructuring reductions decommissioning termination costs costs Total Accrued liabilities as of January 1, 2018 $ 5 $ 2 $ 41 $ 5 $ 53 2018 charges for 2017 and prior initiatives — — 2 — 2 2018 charges for 2018 initiatives 5 — — 10 15 2018 payments for 2017 and prior initiatives (2 ) (1 ) (2 ) — (5 ) 2018 payments for 2018 initiatives (1 ) — — (5 ) (6 ) Reversal of reserves no longer required (2 ) — (29 ) — (31 ) Accrued liabilities as of December 31, 2018 5 1 12 10 28 2019 (credits) charges for 2018 and prior initiatives 2 (1 ) 2 3 6 2019 charges for 2019 initiatives 7 — — 1 8 2019 payments for 2018 and prior initiatives (4 ) — (7 ) (9 ) (20 ) 2019 payments for 2019 initiatives — — — (1 ) (1 ) Reversal of reserves no longer required (2 ) — — (2 ) (4 ) Accrued liabilities as of December 31, 2019 8 — 7 2 17 2020 charges for 2019 and prior initiatives — — 2 3 5 2020 charges for 2020 initiatives 35 — — 3 38 2020 payments for 2019 and prior initiatives (5 ) — (7 ) (4 ) (16 ) 2020 payments for 2020 initiatives (10 ) — — (3 ) (13 ) Reversal of reserves no longer required — — — (1 ) (1 ) Foreign currency effect on liability balance 1 — — — 1 Accrued liabilities as of December 31, 2020 $ 29 $ — $ 2 $ — $ 31
Schedule of Restructuring Reserve By Type of Cost and Segment [Table Text Block]	Performance Advanced Textile Corporate Polyurethanes Products Materials Effects and other Total Accrued liabilities as of January 1, 2018 $ 1 $ 1 $ 3 $ 47 $ 1 $ 53 2018 charges (credits) for 2017 and prior initiatives — 1 — (4 ) 5 2 2018 charges for 2018 initiatives — 2 3 — 10 15 2018 payments for 2017 and prior initiatives (1 ) (1 ) — — (3 ) (5 ) 2018 payments for 2018 initiatives — (1 ) — — (5 ) (6 ) Reversal of reserves no longer required — (1 ) — (29 ) (1 ) (31 ) Accrued liabilities as of December 31, 2018 — 1 6 14 7 28 2019 charges for 2018 and prior initiatives — — — 2 4 6 2019 charges for 2019 initiatives — — 7 — 1 8 2019 payments for 2018 and prior initiatives — (1 ) (2 ) (9 ) (8 ) (20 ) 2019 payments for 2019 initiatives — — (1 ) — — (1 ) Reversal of reserves no longer required — — — (4 ) — (4 ) Accrued liabilities as of December 31, 2019 — — 10 3 4 17 2020 charges (credits) for 2019 and prior initiatives — 1 (1 ) 1 4 5 2020 charges for 2020 initiatives 16 4 9 7 2 38 2020 payments for 2019 and prior initiatives (1 ) — (5 ) (2 ) (8 ) (16 ) 2020 payments for 2020 initiatives (3 ) (3 ) (3 ) (2 ) (2 ) (13 ) Reversal of reserves no longer required — — (1 ) — — (1 ) Foreign currency effect on liability balance — — — 1 — 1 Accrued liabilities as of December 31, 2020 $ 12 $ 2 $ 9 $ 8 $ — $ 31 Current portion of restructuring reserves $ 12 $ 2 $ 6 $ 6 $ — $ 26 Long-term portion of restructuring reserves — — 3 2 — 5
Schedule of Cash and Noncash Restructuring Charges By Type of Initiative [Table Text Block]	Cash charges: 2020 charges for 2019 and prior initiatives $ 5 2020 charges for 2020 initiatives 38 Reversal of reserves no longer required (1 ) Noncash charges: Accelerated depreciation 7 Total 2020 restructuring, impairment and plant closing costs $ 49 Cash charges: 2019 charges for 2018 and prior initiatives $ 6 2019 charges for 2019 initiatives 8 Reversal of reserves no longer required (4 ) Noncash charges: Gain on sale of assets (49 ) Other noncash credits (2 ) Total 2019 restructuring, impairment and plant closing costs $ (41 ) Cash charges: 2018 charges for 2017 and prior initiatives $ 2 2018 charges for 2018 initiatives 15 Noncash charges: Reversal of reserves no longer required (31 ) Other noncash charges 7 Total 2018 restructuring, impairment and plant closing costs $ (7 )

Note 14 - Other Noncurrent Li_2

Note 14 - Other Noncurrent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Other Noncurrent Liabilities [Table Text Block]	December 31, 2020 2019 Pension liabilities $ 680 $ 650 Other postretirement benefits 59 55 Employee benefit accrual 44 38 Other 127 155 Total $ 910 $ 898 December 31, 2020 2019 Pension liabilities $ 680 $ 650 Other postretirement benefits 59 55 Employee benefit accrual 44 38 Other 117 147 Total $ 900 $ 890

Note 15 - Debt (Tables)

Note 15 - Debt (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Debt [Table Text Block]	December 31, December 31, 2020 2019 Senior Credit Facilities: Revolving facility $ — $ 40 Amounts outstanding under A/R programs — 167 Term loan — 103 Senior notes 2,047 1,963 Variable interest entities 50 65 Other 24 51 Total debt $ 2,121 $ 2,389 Total current portion of debt $ 593 $ 212 Long-term portion of debt 1,528 2,177 Total debt $ 2,121 $ 2,389 December 31, December 31, 2020 2019 Senior Credit Facilities: Revolving facility $ — $ 40 Amounts outstanding under A/R programs — 167 Term loan — 103 Senior notes 2,047 1,963 Variable interest entities 50 65 Other 24 51 Total debt, excluding debt to affiliates $ 2,121 $ 2,389 Total current portion of debt $ 593 $ 212 Long-term portion of debt 1,528 2,177 Total debt, excluding debt to affiliates $ 2,121 $ 2,389 Notes payable to affiliates-current — 100 Notes payable to affiliates-noncurrent — 280 Total debt $ 2,121 $ 2,769
Schedule of Line of Credit Facilities [Table Text Block]	Unamortized Discounts and Committed Principal Debt Issuance Carrying Facility Amount Outstanding Costs Value Interest Rate (2) Maturity Revolving Credit Facility $ 1,200 $ — (1) $ — (1) $ — (1) USD LIBOR plus 1.50% 2023
Schedule of Accounts Receivable Programs [Table Text Block]	Maximum Funding Amount Facility Maturity Availability (1) Outstanding Interest Rate (2) U.S. A/R Program April 2022 $ 150 $ — (3) Applicable rate plus 0.90% EU A/R Program April 2022 € 100 € — Applicable rate plus 1.30% (or approximately $123) (or approximately $0)
Schedule of Notes Outstanding [Table Text Block]	Unamortized Premiums, Discounts and Debt Notes Maturity Interest Rate Amount Outstanding Issuance Costs 2021 Senior Notes April 2021 5.125 % €445 (€445 carrying value $(545)) $ — 2022 Senior Notes November 2022 5.125 % $400 ($399 carrying value) 1 2025 Senior Notes April 2025 4.250 % €300 (€298 carrying value $(366)) 2 2029 Senior Notes February 2029 4.500 % $750 ($737 carrying value) 13
Schedule of Maturities of Long-term Debt [Table Text Block]	Year ending December 31, 2021 $ 593 2022 403 2023 1 2024 2 2025 369 Thereafter 753 $ 2,121

Note 17 - Fair Value (Tables)

Note 17 - Fair Value (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	December 31, 2020 December 31, 2019 Carrying Estimated Carrying Estimated Value Fair Value Value Fair Value Non-qualified employee benefit plan investments $ 26 $ 26 $ 28 $ 28 Option agreement for remaining Venator shares 11 11 — — Long-term debt (including current portion) (2,121 ) (2,334 ) (2,389 ) (2,544 )

Note 18 - Revenue Recognition (

Note 18 - Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Disaggregation of Revenue [Table Text Block]	2020 Polyurethanes Performance Products Advanced Materials Textile Effects Corporate and Eliminations Total Primary Geographic Markets (1) U.S. and Canada $ 1,362 $ 447 $ 217 $ 48 $ (23 ) $ 2,051 Europe 961 252 319 98 (1 ) 1,629 Asia Pacific 997 260 224 360 — 1,841 Rest of world 264 64 79 91 (1 ) 497 $ 3,584 $ 1,023 $ 839 $ 597 $ (25 ) $ 6,018 Major Product Groupings MDI urethanes $ 3,584 $ 3,584 Differentiated $ 1,023 1,023 Specialty $ 746 746 Non-specialty 93 93 Textile chemicals and dyes $ 597 597 Eliminations $ (25 ) (25 ) $ 3,584 $ 1,023 $ 839 $ 597 $ (25 ) $ 6,018 2019 Polyurethanes Performance Products Advanced Materials Textile Effects Corporate and Eliminations Total Primary Geographic Markets (1) U.S. and Canada $ 1,475 $ 531 $ 289 $ 62 $ (64 ) $ 2,293 Europe 1,051 316 410 128 (9 ) 1,896 Asia Pacific 1,078 248 269 446 (2 ) 2,039 Rest of world 307 63 76 127 (4 ) 569 $ 3,911 $ 1,158 $ 1,044 $ 763 $ (79 ) $ 6,797 Major Product Groupings MDI urethanes $ 3,911 $ 3,911 Differentiated $ 1,158 1,158 Specialty $ 891 891 Non-specialty 153 153 Textile chemicals and dyes $ 763 763 Eliminations $ (79 ) (79 ) $ 3,911 $ 1,158 $ 1,044 $ 763 $ (79 ) $ 6,797 2018 Polyurethanes Performance Products Advanced Materials Textile Effects Corporate and Eliminations Total Primary Geographic Markets(1) U.S. and Canada $ 1,426 $ 586 $ 285 $ 68 $ 122 $ 2,487 Europe 1,277 368 445 135 (16 ) 2,209 Asia Pacific 1,236 278 301 485 (24 ) 2,276 Rest of world 343 69 85 136 (1 ) 632 $ 4,282 $ 1,301 $ 1,116 $ 824 $ 81 $ 7,604 Major Product Groupings MDI urethanes $ 4,282 $ 4,282 Differentiated $ 1,301 1,301 Specialty $ 932 932 Non-specialty 184 184 Textile chemicals and dyes $ 824 824 Eliminations $ 81 81 $ 4,282 $ 1,301 $ 1,116 $ 824 $ 81 $ 7,604

Note 19 - Employee Benefit Pl_2

Note 19 - Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Net Funded Status and Amounts Recognized in Balance Sheet [Table Text Block]	Defined Benefit Plans Other Postretirement Benefit Plans 2020 2019 2020 2019 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Plans Plans Plans Plans Plans Plans Plans Plans Change in benefit obligation Benefit obligation at beginning of year $ 1,024 $ 2,377 $ 956 $ 2,157 $ 60 $ — $ 59 $ — Service cost 21 31 20 30 1 — 1 — Interest cost 37 25 41 37 2 — 3 — Participant contributions — 6 — 6 2 — 2 — Plan amendments — — — (9 ) — — — — Foreign currency exchange rate changes — 200 — 7 — — — — Settlements/curtailments/divestitures (2 ) (10 ) 20 (2 ) — — 1 — Actuarial (gain) loss 87 116 65 224 9 — — — Benefits paid (76 ) (74 ) (78 ) (73 ) (9 ) — (6 ) — Benefit obligation at end of year $ 1,091 $ 2,671 $ 1,024 $ 2,377 $ 65 $ — $ 60 $ — Change in plan assets Fair value of plan assets at beginning of year $ 790 $ 1,960 $ 697 $ 1,751 $ — $ — $ — $ — Actual return on plan assets 99 143 107 224 — — — — Foreign currency exchange rate changes — 161 — 11 — — — — Participant contributions — 6 — 6 2 — 2 — Settlement/transfers/divestitures (1 ) (11 ) 19 (2 ) — — — — Company contributions 54 40 45 43 7 — 4 — Benefits paid (76 ) (74 ) (78 ) (73 ) (9 ) — (6 ) — Fair value of plan assets at end of year $ 866 $ 2,225 $ 790 $ 1,960 $ — $ — $ — $ — Funded status Fair value of plan assets $ 866 $ 2,225 $ 790 $ 1,960 $ — $ — $ — $ — Benefit obligation 1,091 2,671 1,024 2,377 65 — 60 — Accrued benefit cost $ (225 ) $ (446 ) $ (234 ) $ (417 ) $ (65 ) $ — $ (60 ) $ — Amounts recognized in balance sheet: Noncurrent asset $ — $ 20 $ — $ 10 $ — $ — $ — $ — Current liability (5 ) (6 ) (5 ) (6 ) (6 ) — (5 ) — Noncurrent liability (220 ) (460 ) (229 ) (421 ) (59 ) — (55 ) — Total $ (225 ) $ (446 ) $ (234 ) $ (417 ) $ (65 ) $ — $ (60 ) $ —
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]	Defined Benefit Plans Other Postretirement Benefit Plans 2020 2019 2020 2019 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Plans Plans Plans Plans Plans Plans Plans Plans Amounts recognized in accumulated other comprehensive loss: Net actuarial loss $ 363 $ 874 $ 394 $ 840 $ 26 $ — $ 20 $ — Prior service credit (9 ) (27 ) (11 ) (32 ) (25 ) — (33 ) — Total $ 354 $ 847 $ 383 $ 808 $ 1 $ — $ (13 ) $ — Defined Benefit Plans Other Postretirement Benefit Plans 2020 2019 2020 2019 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Plans Plans Plans Plans Plans Plans Plans Plans Amounts recognized in accumulated other comprehensive loss: Net actuarial loss $ 363 $ 877 $ 395 $ 846 $ 26 $ — $ 20 $ — Prior service credit (9 ) (27 ) (11 ) (31 ) (25 ) — (33 ) — Total $ 354 $ 850 $ 384 $ 815 $ 1 $ — $ (13 ) $ —
Schedule of Net Benefit Costs [Table Text Block]	Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 21 $ 20 $ 23 $ 31 $ 30 $ 32 Interest cost 37 41 39 25 37 37 Expected return on plan assets (59 ) (53 ) (54 ) (114 ) (102 ) (109 ) Amortization of prior service credit (2 ) (2 ) (2 ) (5 ) (4 ) (5 ) Amortization of actuarial loss 28 23 31 53 45 38 Settlement loss — — 2 — 1 — Net periodic benefit cost (credit) $ 25 $ 29 $ 39 $ (10 ) $ 7 $ (7 ) Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 1 $ 1 $ 2 $ — $ — $ — Interest cost 2 3 2 — — — Amortization of prior service credit (5 ) (5 ) (5 ) — — — Amortization of actuarial loss 1 1 2 — — — Net periodic benefit (credit) costs $ (1 ) $ — $ 1 $ — $ — $ — Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 21 $ 20 $ 23 $ 31 $ 30 $ 32 Interest cost 37 41 39 25 37 37 Expected return on plan assets (59 ) (53 ) (54 ) (114 ) (102 ) (109 ) Amortization of prior service credit (2 ) (2 ) (2 ) (5 ) (4 ) (5 ) Amortization of actuarial loss 28 23 31 57 48 41 Settlement loss — — 2 — 1 — Net periodic benefit cost (credit) $ 25 $ 29 $ 39 $ (6 ) $ 10 $ (4 ) Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Service cost $ 1 $ 1 $ 2 $ — $ — $ — Interest cost 2 3 2 — — — Amortization of prior service credit (5 ) (5 ) (5 ) — — — Amortization of actuarial loss 1 1 2 — — — Net periodic benefit (credit) costs $ (1 ) $ — $ 1 $ — $ — $ —
Schedule of Amount Recognized in Net Periodic Benefit Cost and Other Comprehensive Income (Loss) [Table Text Block]	Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss $ 40 $ 19 $ 18 $ 87 $ 101 $ 117 Amortization of actuarial loss (28 ) (26 ) (34 ) (53 ) (45 ) (38 ) Current year prior service (credits) cost — — — — (10 ) 4 Amortization of prior service credit 2 2 2 5 4 5 Settlements (42 ) — (2 ) — 1 — Total recognized in other comprehensive income (loss) (28 ) (5 ) (16 ) 39 51 88 Amounts related to discontinued operations 17 9 (4 ) — — — Total recognized in other comprehensive income (loss) in continuing operations (11 ) 4 (20 ) 39 51 88 Net periodic benefit cost 25 29 39 (10 ) 7 (7 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 14 $ 33 $ 19 $ 29 $ 58 $ 81 Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss (gain) $ 9 $ — $ (10 ) $ — $ — $ — Amortization of actuarial loss (1 ) (1 ) (2 ) — — — Current year prior service credit — — — — — — Amortization of prior service credit 5 5 6 — — — Settlements (1 ) — — — — — Curtailment (gain) loss 2 — — — — — Total recognized in other comprehensive income (loss) 14 4 (6 ) — — — Amounts related to discontinued operations — (6 ) — — — — Total recognized in other comprehensive income (loss) in continuing operations 14 (2 ) (6 ) — — — Net periodic benefit cost (1 ) — 1 — — — Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 13 $ (2 ) $ (5 ) $ — $ — $ — Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss $ 40 $ 19 $ 18 $ 87 $ 101 $ 117 Amortization of actuarial loss (28 ) (26 ) (34 ) (57 ) (48 ) (41 ) Current year prior service credit — — — — (10 ) 4 Amortization of prior service credit 2 2 2 5 4 5 Settlements (42 ) — (2 ) — 1 — Curtailment (gain)/loss — — — — — — Total recognized in other comprehensive income (loss) (28 ) (5 ) (16 ) 35 48 85 Amounts related to discontinued operations 17 9 (4 ) — — — Total recognized in other comprehensive income (loss) in continuing operations (11 ) 4 (20 ) 35 48 85 Net periodic benefit cost 25 29 39 (6 ) 10 (4 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 14 $ 33 $ 19 $ 29 $ 58 $ 81 Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Current year actuarial loss $ 9 $ — $ (10 ) $ — $ — $ — Amortization of actuarial loss (1 ) (1 ) (2 ) — — — Current year prior service credit — — — — — — Amortization of prior service credit 5 5 6 — — — Settlements (1 ) — — — — — Curtailment (gain)/loss 2 — — — — — Total recognized in other comprehensive income (loss) 14 4 (6 ) — — — Amounts related to discontinued operations — (6 ) — — — — Total recognized in other comprehensive income (loss) in continuing operations 14 (2 ) (6 ) — — — Net periodic benefit cost (1 ) — 1 — — — Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 13 $ (2 ) $ (5 ) $ — $ — $ —
Defined Benefit Plan, Assumptions [Table Text Block]	Defined Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Projected benefit obligation Discount rate 2.82 % 3.59 % 4.39 % 0.69 % 1.07 % 1.75 % Rate of compensation increase 4.09 % 4.09 % 4.10 % 2.59 % 2.65 % 2.95 % Interest credit rate 5.15 % 5.15 % 5.15 % 0.33 % 0.49 % 1.04 % Net periodic pension cost Discount rate 3.59 % 4.39 % 3.74 % 1.07 % 1.75 % 1.65 % Rate of compensation increase 4.09 % 4.07 % 4.10 % 2.65 % 2.64 % 3.38 % Expected return on plan assets 7.52 % 7.52 % 7.52 % 5.89 % 5.89 % 5.88 % Interest credit rate 5.15 % 5.15 % 5.15 % 0.49 % 1.04 % 0.88 % Other Postretirement Benefit Plans U.S. plans Non-U.S. plans 2020 2019 2018 2020 2019 2018 Projected benefit obligation Discount rate 2.63 % 3.46 % 4.26 % 2.30 % 2.90 % 3.50 % Net periodic pension cost Discount rate 3.46 % 4.26 % 3.58 % 2.90 % 3.50 % 3.30 %
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]	U.S. plans Non-U.S. plans 2020 2019 2020 2019 Projected benefit obligation in excess of plan assets Projected benefit obligation $ 1,091 $ 1,024 $ 2,017 $ 2,203 Fair value of plan assets 866 790 1,551 1,777
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]	U.S. plans Non-U.S. plans 2020 2019 2020 2019 Accumulated benefit obligation in excess of plan assets Projected benefit obligation $ 1,091 $ 1,024 $ 1,203 $ 1,066 Accumulated benefit obligation 1,073 1,019 1,116 991 Fair value of plan assets 866 790 746 664
Schedule of Employer Future Contribution and Expected Benefit Payments [Table Text Block]	U.S. Plans Non-U.S. Plans Other Other Defined Postretirement Defined Postretirement Benefit Benefit Benefit Benefit Plans Plans Plans Plans 2021 expected employer contributions To plan trusts $ 14 $ 6 $ 40 $ — Expected benefit payments 2021 59 6 86 — 2022 65 6 87 — 2023 70 5 92 — 2024 66 5 90 — 2025 100 5 92 — 2026 - 2030 316 24 493 —
Defined Benefit Plan, Plan Assets, Category [Table Text Block]	Fair Value Amounts Using Quoted prices in active Significant other Significant December 31, markets for identical observable inputs unobservable inputs Asset category 2020 assets (Level 1) (Level 2) (Level 3) U.S. pension plans: Equities $ 481 $ 315 $ 166 $ — Fixed income 323 242 81 — Real estate/other 62 — — 62 Cash — — — — Total U.S. pension plan assets $ 866 $ 557 $ 247 $ 62 Non-U.S. pension plans: Equities $ 564 $ 229 $ 335 $ — Fixed income 971 610 361 — Real estate/other 628 93 459 76 Cash 62 59 3 — Total Non-U.S. pension plan assets $ 2,225 $ 991 $ 1,158 $ 76 Fair Value Amounts Using Quoted prices in active Significant other Significant December 31, Markets for identical Observable inputs Unobservable inputs Asset category 2019 assets (Level 1) (Level 2) (Level 3) U.S. pension plans: Equities $ 422 $ 283 $ 139 $ — Fixed income 301 220 81 — Real estate/other 67 — — 67 Cash — — — — Total U.S. pension plan assets $ 790 $ 503 $ 220 $ 67 Non-U.S. pension plans: Equities $ 535 $ 228 $ 307 $ — Fixed income 847 560 287 — Real estate/other 505 99 349 57 Cash 73 72 1 — Total Non-U.S. pension plan assets $ 1,960 $ 959 $ 944 $ 57
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]	Real Estate/Other Year ended December 31, 2020 2019 Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3) Balance at beginning of period $ 124 $ 121 Return on pension plan assets 5 4 Purchases, sales and settlements (2 ) (1 ) Transfers into (out of) Level 3 11 — Balance at end of period $ 138 $ 124
Schedule of Allocation of Plan Assets [Table Text Block]	Target Allocation Allocation at December 31, Asset category 2021 2020 2019 U.S. pension plans: Equities 54 % 56 % 54 % Fixed income 39 % 37 % 38 % Real estate/other 4 % 7 % 8 % Cash 3 % — % — % Total U.S. pension plans 100 % 100 % 100 % Non-U.S. pension plans: Equities 26 % 25 % 27 % Fixed income 48 % 44 % 43 % Real estate/other 14 % 28 % 26 % Cash 12 % 3 % 4 % Total non-U.S. pension plans 100 % 100 % 100 %

Note 20 - Income Taxes (Tables)

Note 20 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year ended December 31, 2020 2019 2018 Income tax expense (benefit): U.S. Current $ (216 ) $ (17 ) $ 57 Deferred 167 (181 ) (30 ) Non-U.S. Current 90 71 153 Deferred 5 89 (135 ) Total $ 46 $ (38 ) $ 45 Year ended December 31, 2020 2019 2018 Income tax expense (benefit): U.S. Current $ (215 ) $ (21 ) $ 57 Deferred 166 (179 ) (34 ) Non-U.S. Current 90 70 153 Deferred 5 89 (135 ) Total $ 46 $ (41 ) $ 41
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year ended December 31, 2020 2019 2018 Income from continuing operations before income taxes $ 337 $ 391 $ 734 Expected tax expense at U.S. statutory rate of 21% $ 71 $ 82 $ 154 Change resulting from: State tax expense net of federal benefit (4 ) (3 ) (1 ) Non-U.S. tax rate differentials 16 9 27 Other non-U.S. tax effects, including nondeductible expenses and other withholding taxes 5 13 8 U.S. Tax Reform Act impact — (1 ) 32 Currency exchange gains/losses(net) — (5 ) (10 ) Venator investment basis difference and fair market value adjustments — (199 ) 18 Tax losses related to Venator investment — (18 ) — Non-U.S. income subject to U.S. tax not offset by U.S. foreign tax credits 7 7 16 Tax authority audits and dispute resolutions 1 (6 ) 5 Share-based compensation excess tax benefits (1 ) (4 ) (14 ) Change in valuation allowance (14 ) 56 (185 ) Deferred tax effects of non-U.S. tax rate changes (2 ) 36 (2 ) Impact of equity method investments (10 ) (13 ) (14 ) Sale of the India-based DIY business (35 ) — Non-U.S. withholding tax on repatriated earnings, net of U.S. foreign tax credits 20 6 11 Other U.S. tax effects, including nondeductible expenses and other credits (8 ) 2 — Total income tax expense (benefit) $ 46 $ (38 ) $ 45 Year ended December 31, 2020 2019 2018 Income from continuing operations before income taxes $ 338 $ 377 $ 716 Expected tax expense at U.S. statutory rate of 21% $ 71 $ 79 $ 150 Change resulting from: State tax expense net of federal benefit (4 ) (3 ) (1 ) Non-U.S. tax rate differentials 16 9 27 Other non-U.S. tax effects, including nondeductible expenses and other withholding taxes 5 13 8 U.S. Tax Reform Act impact — (1 ) 32 Currency exchange gains/losses(net) — (5 ) (10 ) Venator investment basis difference and fair market value adjustments — (199 ) 18 Tax losses related to Venator investment — (18 ) — Non-U.S. income subject to U.S. tax not offset by U.S. foreign tax credits 7 7 16 Tax authority audits and dispute resolutions 1 (6 ) 5 Share-based compensation excess tax benefits (1 ) (4 ) (14 ) Change in valuation allowance (14 ) 56 (185 ) Deferred tax effects of non-U.S. tax rate changes (2 ) 36 (2 ) Impact of equity method investments (10 ) (13 ) (14 ) Sale of the India-based DIY business (35 ) — — Non-U.S. withholding tax on repatriated earnings, net of U.S. foreign tax credits 20 6 11 Other U.S. tax effects, including nondeductible expenses and other credits (8 ) 2 — Total income tax expense (benefit) $ 46 $ (41 ) $ 41
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year ended December 31, 2020 2019 2018 U.S. $ (231 ) $ (106 ) $ (38 ) Non-U.S. 568 497 772 Total $ 337 $ 391 $ 734 Year ended December 31, 2020 2019 2018 U.S. $ (230 ) $ (120 ) $ (56 ) Non-U.S. 568 497 772 Total $ 338 $ 377 $ 716
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2020 2019 Deferred income tax assets: Net operating loss carryforwards $ 258 $ 281 Pension and other employee compensation 184 172 Property, plant and equipment 15 15 Intangible assets 52 56 Basis difference in Venator investment 35 199 Operating leases 111 98 Capital loss carryovers 30 11 Deferred interest 28 19 Other, net 44 42 Total $ 757 $ 893 Deferred income tax liabilities: Property, plant and equipment $ (249 ) $ (218 ) Pension and other employee compensation (4 ) (1 ) Intangible assets (72 ) (27 ) Unrealized currency gains (14 ) (43 ) Operating leases (114 ) (102 ) Other, net (22 ) (8 ) Total $ (475 ) $ (399 ) Net deferred tax asset before valuation allowance $ 282 $ 494 Valuation allowance—net operating losses and other (206 ) (231 ) Net deferred tax asset $ 76 $ 263 Non-current deferred tax asset 288 292 Non-current deferred tax liability (212 ) (29 ) Net deferred tax asset $ 76 $ 263 December 31, 2020 2019 Deferred income tax assets: Net operating loss carryforwards $ 258 $ 281 Pension and other employee compensation 184 172 Property, plant and equipment 15 15 Intangible assets 52 56 Basis difference in Venator investment 35 199 Operating leases 111 98 Capital loss carryovers 30 11 Deferred interest 28 19 Other, net 44 42 Total $ 757 $ 893 Deferred income tax liabilities: Property, plant and equipment $ (249 ) $ (218 ) Pension and other employee compensation (4 ) (1 ) Intangible assets (72 ) (27 ) Unrealized currency gains (14 ) (43 ) Operating leases (114 ) (102 ) Other, net (24 ) (8 ) Total $ (477 ) $ (399 ) Net deferred tax asset before valuation allowance $ 280 $ 494 Valuation allowance—net operating losses and other (206 ) (231 ) Net deferred tax asset $ 74 $ 263 Non-current deferred tax asset 288 292 Non-current deferred tax liability (214 ) (29 ) Net deferred tax asset $ 74 $ 263
Summary of Valuation Allowance [Table Text Block]	2020 2019 2018 Valuation allowance as of January 1 $ 231 $ 215 $ 412 Valuation allowance as of December 31 206 231 215 Net decrease (increase) 25 (16 ) 197 Foreign currency movements 6 — 3 Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances (17 ) (40 ) (15 ) Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 Components of change in valuation allowance affecting tax expense: Pre-tax income and losses in jurisdictions with valuation allowances resulting in no tax expense or benefit $ 14 $ (133 ) $ 53 Releases of valuation allowances in various jurisdictions — — 132 Establishments of valuation allowances in various jurisdictions — 77 — Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 2020 2019 2018 Valuation allowance as of January 1 $ 231 $ 215 $ 412 Valuation allowance as of December 31 206 231 215 Net decrease (increase) 25 (16 ) 197 Foreign currency movements 6 — 3 Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances (17 ) (40 ) (15 ) Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185 Components of change in valuation allowance affecting tax expense: Pre-tax income and losses in jurisdictions with valuation allowances resulting in no tax expense or benefit $ 14 $ (133 ) $ 53 Releases of valuation allowances in various jurisdictions — — 132 Establishments of valuation allowances in various jurisdictions — 77 — Change in valuation allowance per rate reconciliation $ 14 $ (56 ) $ 185
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	2020 2019 Unrecognized tax benefits as of January 1 $ 28 $ 26 Gross increases and decreases—tax positions taken during a prior period 2 4 Gross increases and decreases—tax positions taken during the current period 1 1 Decreases related to settlements of amounts due to tax authorities (12 ) — Reductions resulting from the lapse of statutes of limitation (2 ) (4 ) Foreign currency movements (1 ) 1 Unrecognized tax benefits as of December 31 $ 16 $ 28
Schedule of Unrecognized Tax Benefits, Income Tax Penalties and Interest Recognized in Financial Statement [Table Text Block]	Year ended December 31, 2020 2019 2018 Interest expense included in tax expense $ 1 $ 2 $ — Penalties expense included in tax expense — 2 — December 31, 2020 2019 Accrued liability for interest $ 4 $ 5 Accrued liability for penalties — 2
Summary of Open Tax Years [Table Text Block]	Tax Jurisdiction Open Tax Years Belgium 2018 and later China 2010 and later France 2018 and later Germany 2016 and later Hong Kong 2014 and later India 2004 and later Italy 2015 and later Japan 2017 and later Mexico 2014 and later Spain 2013 and later Switzerland 2014 and later The Netherlands 2016 and later Thailand 2013 and later United Kingdom 2017 and later United States federal 2017 and later

Note 21 - Commitments and Con_2

Note 21 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]	Year ending December 31, 2021 $ 1,413 2022 982 2023 818 2024 696 2025 648 Thereafter 1,924 $ 6,481

Note 23 - Huntsman Corporatio_2

Note 23 - Huntsman Corporation Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Dividends Declared [Table Text Block]	2020 Approximate Per share amount Quarter ended payment amount paid March 31, 2020 $ 0.1625 $ 37 June 30, 2020 0.1625 36 September 30, 2020 0.1625 36 December 31, 2020 0.1625 35 2019 Approximate Per share amount Quarter ended payment amount paid March 31, 2019 $ 0.1625 $ 39 June 30, 2019 0.1625 38 September 30, 2019 0.1625 38 December 31, 2019 0.1625 35

Note 24 - Stock-based Compens_2

Note 24 - Stock-based Compensation Plan (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Share-based Payment Arrangement, Cost by Plan [Table Text Block]	Year ended December 31, 2020 2019 2018 Huntsman Corporation compensation cost $ 27 $ 29 $ 27 Huntsman International compensation cost 26 28 26
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Year ended December 31, 2020 2019 2018 Dividend yield 3.0 % 2.9 % 1.6 % Expected volatility 53.1 % 54.0 % 55.2 % Risk-free interest rate 1.4 % 2.5 % 2.6 % Expected life of stock options granted during the period (in years) 5.9 5.9 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, 2020 5,025 $ 19.08 Granted 788 21.52 Exercised (829 ) 12.81 Forfeited (169 ) 24.28 Outstanding at December 31, 2020 4,815 20.37 6.0 $ 26 Exercisable at December 31, 2020 3,371 19.23 4.9 22
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, 2020 1,640 $ 24.61 427 $ 24.80 Granted 848 21.92 238 21.53 Vested (577 ) (1)(2) 25.15 (218 ) 24.64 Forfeited (44 ) 26.44 (36 ) 23.71 Nonvested at December 31, 2020 1,867 23.18 411 23.08

Note 25 - Other Comprehensive_2

Note 25 - Other Comprehensive (Loss) Income (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Pension and Other Foreign other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2020 $ (369 ) $ (1,031 ) $ 8 $ 4 $ (1,388 ) $ 26 $ (1,362 ) Other comprehensive income (loss) before reclassifications, gross 29 (135 ) — — (106 ) (6 ) (112 ) Tax benefit 12 30 — — 42 — 42 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 111 — — 111 — 111 Tax expense — (25 ) — — (25 ) — (25 ) Net current-period other comprehensive income (loss) 41 (19 ) — — 22 (6 ) 16 Ending balance, December 31, 2020 $ (328 ) $ (1,050 ) $ 8 $ 4 $ (1,366 ) $ 20 $ (1,346 ) Pension and Other Foreign other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2019 $ (371 ) $ (994 ) $ 8 $ 5 $ (1,352 ) $ 36 $ (1,316 ) Other comprehensive (loss) income before reclassifications, gross — (112 ) — (1 ) (113 ) 5 (108 ) Tax benefit 2 25 — — 27 — 27 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 62 — — 62 — 62 Tax expense — (12 ) — — (12 ) — (12 ) Net current-period other comprehensive (loss) income 2 (37 ) — (1 ) (36 ) 5 (31 ) Acquisition of noncontrolling interest — — — — — (15 ) (15 ) Ending balance, December 31, 2019 $ (369 ) $ (1,031 ) $ 8 $ 4 $ (1,388 ) $ 26 $ (1,362 ) Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2020 $ (374 ) $ (1,012 ) $ 8 $ — $ (1,378 ) $ 26 $ (1,352 ) Other comprehensive income (loss) before reclassifications, gross 29 (135 ) — — (106 ) (6 ) (112 ) Tax benefit 12 30 — — 42 — 42 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 115 — — 115 — 115 Tax expense — (26 ) — — (26 ) — (26 ) Net current-period other comprehensive (loss) income 41 (16 ) — — 25 (6 ) 19 Ending balance, December 31, 2020 $ (333 ) $ (1,028 ) $ 8 $ — $ (1,353 ) $ 20 $ (1,333 ) Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2019 $ (376 ) $ (977 ) $ 8 $ 1 $ (1,344 ) $ 36 $ (1,308 ) Other comprehensive (loss) income before reclassifications, gross — (113 ) — (1 ) (114 ) 5 (109 ) Tax benefit 2 25 — — 27 — 27 Amounts reclassified from accumulated other comprehensive loss, gross(c) — 65 — — 65 — 65 Tax expense — (12 ) — — (12 ) — (12 ) Net current-period other comprehensive (loss) income 2 (35 ) — (1 ) (34 ) 5 (29 ) Acquisition of noncontrolling interest — — — — — (15 ) (15 ) Ending balance, December 31, 2019 $ (374 ) $ (1,012 ) $ 8 $ — $ (1,378 ) $ 26 $ (1,352 )
Huntsman International LLC [Member]
Notes Tables
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Amounts reclassified from accumulated other comprehensive loss Affected line item in Details about Accumulated Other Year ended December 31, where net income Comprehensive Loss Components(a): 2020 2019 2018 is presented Amortization of pension and other postretirement benefits: Prior service credit $ (12 ) $ (11 ) $ (12 ) (b) Settlement loss 43 1 2 Curtailment gain (2 ) — — Actuarial loss 82 72 87 (b)(c) 111 62 77 Total before tax (25 ) (12 ) (13 ) Income tax expense Total reclassifications for the period $ 86 $ 50 $ 64 Net of tax Amounts reclassified from accumulated other comprehensive loss Affected line item in Details about Accumulated Other Year ended December 31, where net income Comprehensive Loss Components(a): 2020 2019 2018 is presented Amortization of pension and other postretirement benefits: Prior service credit $ (12 ) $ (11 ) $ (12 ) (b) Settlement loss 43 1 2 (c) Curtailment gain (2 ) — — (c) Actuarial loss 86 75 90 (b)(c) 115 65 80 Total before tax (26 ) (12 ) (14 ) Income tax expense Total reclassifications for the period $ 89 $ 53 $ 66 Net of tax

Note 26 - Related Party Trans_2

Note 26 - Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Related Party Transactions [Table Text Block]	Year ended December 31, 2020 2019 2018 Sales to: Unconsolidated affiliates $ 115 $ 133 $ 153 Inventory purchases from: Unconsolidated affiliates 407 434 411

Note 27 - Operating Segment I_2

Note 27 - Operating Segment Information (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Year ended December 31, 2020 2019 2018 Revenues: Polyurethanes $ 3,584 $ 3,911 $ 4,282 Performance Products 1,023 1,158 1,301 Advanced Materials 839 1,044 1,116 Textile Effects 597 763 824 Corporate and eliminations (25 ) (79 ) 81 Total $ 6,018 $ 6,797 $ 7,604 Huntsman Corporation: Segment adjusted EBITDA (1) Polyurethanes $ 472 $ 548 $ 809 Performance Products 164 168 197 Advanced Materials 130 201 225 Textile Effects 42 84 101 Corporate and other (2) (161 ) (155 ) (171 ) Total 647 846 1,161 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (86 ) (111 ) (115 ) Interest expense, net—discontinued operations — — (36 ) Income tax (expense) benefit—continuing operations (46 ) 38 (45 ) Income tax expense—discontinued operations (242 ) (35 ) (86 ) Depreciation and amortization—continuing operations (283 ) (270 ) (255 ) Depreciation and amortization—discontinued operations — (61 ) (88 ) Net income attributable to noncontrolling interests 32 36 313 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (31 ) (5 ) (9 ) Merger costs — — (2 ) EBITDA from discontinued operations 1,017 265 171 Noncontrolling interest of discontinued operations — — (232 ) Fair value adjustments to Venator investment and related loss on disposal (88 ) (18 ) (62 ) Loss on early extinguishment of debt — (23 ) (3 ) Certain legal and other settlements and related expenses (5 ) (6 ) (1 ) Gain (loss) on sale of businesses/assets 280 (21 ) — Income from transition services arrangements 7 — — Certain nonrecurring information technology project implementation costs (6 ) (4 ) — Amortization of pension and postretirement actuarial losses (76 ) (66 ) (67 ) Plant incident remediation costs (2 ) (8 ) — Restructuring, impairment and plant closing and transition (costs) credits (52 ) 41 6 Net income $ 1,066 $ 598 $ 650 Year ended December 31, 2020 2019 2018 Depreciation and Amortization: Polyurethanes $ 130 $ 120 $ 108 Performance Products 79 81 78 Advanced Materials 45 36 37 Textile Effects 16 16 16 Corporate and other 13 17 16 Total $ 283 $ 270 $ 255 Year ended December 31, 2020 2019 2018 Capital Expenditures: Polyurethanes $ 172 $ 185 $ 153 Performance Products 32 32 48 Advanced Materials 21 24 20 Textile Effects 12 22 20 Corporate and other 12 11 10 Total $ 249 $ 274 $ 251 December 31, 2020 2019 Total Assets: Polyurethanes $ 3,970 $ 3,437 Performance Products 1,062 1,125 Advanced Materials 1,002 774 Textile Effects 481 511 Corporate and other 2,198 1,265 Total $ 8,713 $ 7,112 December 31, 2020 2019 Goodwill: Polyurethanes $ 312 $ 177 Performance Products 18 16 Advanced Materials 203 83 Total $ 533 $ 276 Year ended December 31, 2020 2019 2018 Huntsman International: Segment adjusted EBITDA (1) Polyurethanes $ 472 $ 548 $ 809 Performance Products 164 168 197 Advanced Materials 130 201 225 Textile Effects 42 84 101 Corporate and other (2) (155 ) (150 ) (167 ) Total 653 851 1,165 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (88 ) (126 ) (136 ) Interest expense, net—discontinued operations — — (36 ) Income tax (expense) benefit—continuing operations (46 ) 41 (41 ) Income tax expense—discontinued operations (242 ) (35 ) (86 ) Depreciation and amortization—continuing operations (283 ) (270 ) (252 ) Depreciation and amortization—discontinued operations — (61 ) (88 ) Net income attributable to noncontrolling interests 32 36 313 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (31 ) (5 ) (9 ) Merger costs — — (2 ) EBITDA from discontinued operations 1,017 265 171 Noncontrolling interest of discontinued operations — — (232 ) Fair value adjustments to Venator investment and related loss on disposal (88 ) (18 ) (62 ) Loss on early extinguishment of debt — (23 ) (3 ) Certain legal and other settlements and related expenses (5 ) (6 ) (1 ) Gain (loss) on sale of businesses/assets 280 (21 ) — Income from transition services arrangements 7 — — Certain nonrecurring information technology project implementation costs (6 ) (4 ) — Amortization of pension and postretirement actuarial losses (79 ) (70 ) (71 ) Plant incident remediation costs (2 ) (8 ) — Restructuring, impairment and plant closing and transition (costs) credits (52 ) 41 6 Net income $ 1,067 $ 587 $ 636 Year ended December 31, 2020 2019 2018 Depreciation and Amortization: Polyurethanes $ 130 $ 120 $ 108 Performance Products 79 81 78 Advanced Materials 45 36 37 Textile Effects 16 16 16 Corporate and other 13 17 13 Total $ 283 $ 270 $ 252 Year ended December 31, 2020 2019 2018 Capital Expenditures: Polyurethanes $ 172 $ 185 $ 153 Performance Products 32 32 48 Advanced Materials 21 24 20 Textile Effects 12 22 20 Corporate and other 12 11 10 Total $ 249 $ 274 $ 251 December 31, 2020 2019 Total Assets: Polyurethanes $ 3,970 $ 3,437 Performance Products 1,062 1,125 Advanced Materials 1,002 774 Textile Effects 481 511 Corporate and other 2,241 1,668 Total $ 8,756 $ 7,515 December 31, 2020 2019 Goodwill: Polyurethanes $ 312 $ 177 Performance Products 18 16 Advanced Materials 203 83 Total $ 533 $ 276
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Year ended December 31, 2020 2019 2018 Revenues by geographic area (1) United States $ 1,863 $ 2,025 $ 2,136 China 1,115 1,076 1,260 Germany 388 541 537 India 211 319 352 Other nations 2,441 2,836 3,319 Total $ 6,018 $ 6,797 $ 7,604 December 31, 2020 2019 Long-lived assets (2) United States $ 1,078 $ 970 The Netherlands 368 334 China 251 247 Germany 144 137 Saudi Arabia 143 154 Singapore 90 94 Switzerland 73 106 Other nations 358 341 Total $ 2,505 $ 2,383

Schedule I - Condensed Financ_2

Schedule I - Condensed Financial Information of Registrant (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Condensed Balance Sheet [Table Text Block]	December 31, 2020 2019 ASSETS Cash and cash equivalents $ 2 $ — Prepaid assets 2 1 Receivable from affiliate 3 86 Note receivable from affiliate — 100 Total current assets 7 187 Note receivable from affiliate-noncurrent — 280 Investment in and advances to affiliates 3,561 2,626 Total assets $ 3,568 $ 3,093 LIABILITIES AND STOCKHOLDERS’ EQUITY Payable to affiliate $ 39 $ 396 Accrued liabilities 3 3 Total current liabilities 42 399 Other noncurrent liabilities 7 7 Total liabilities 49 406 STOCKHOLDERS’ EQUITY Common stock $0.01 par value, 1,200,000,000 shares authorized, 258,520,411 and 257,405,496 shares issued and 220,046,262 and 224,295,868 shares outstanding, respectively 3 3 Additional paid-in capital 4,048 4,008 Treasury stock, 38,477,091 and 33,112,572 shares, respectively (731 ) (635 ) Unearned stock-based compensation (19 ) (17 ) Retained earnings 1,564 690 Accumulated other comprehensive loss (1,346 ) (1,362 ) Total stockholders’ equity 3,519 2,687 Total liabilities and stockholders’ equity $ 3,568 $ 3,093
Condensed Income Statement [Table Text Block]	Year ended December 31, 2020 2019 2018 Selling, general and administrative expenses $ (6 ) $ (5 ) $ (4 ) Interest income 2 15 21 Equity in income of subsidiaries 892 401 163 Dividend income—affiliate 144 148 154 Other income 2 3 3 Net income $ 1,034 $ 562 $ 337
Condensed Statement of Comprehensive Income [Table Text Block]	Year ended December 31, 2020 2019 2018 Net income $ 1,034 $ 562 $ 337 Other comprehensive income, net of tax: Foreign currency translations adjustments 41 2 (192 ) Pension and other postretirement benefits adjustments (19 ) (37 ) (39 ) Other, net 32 35 304 Other comprehensive income, net of tax 54 — 73 Comprehensive income 1,088 562 410 Comprehensive income attributable to noncontrolling interests (38 ) (31 ) (266 ) Comprehensive income attributable to Huntsman Corporation $ 1,050 $ 531 $ 144
Condensed Statement of Stockholders' Equity [Table Text Block]	Huntsman Corporation Stockholders’ Equity Accumulated Shares Additional Unearned other Common Common paid-in Treasury stock-based Retained comprehensive Total stock stock capital stock compensation earnings loss equity Beginning balance, January 1, 2018 240,213,606 $ 3 $ 3,889 $ (150 ) $ (15 ) $ 161 $ (1,268 ) $ 2,620 Cumulative effect of changes in fair value of equity investments — — — — — 10 (10 ) — Net income — — — — — 337 — 337 Other comprehensive loss — — — — — — (198 ) (198 ) Issuance of nonvested stock awards — — 14 — (14 ) — — — Vesting of stock awards 1,135,003 — 11 — — — — 11 Recognition of stock-based compensation — — 8 — 13 — — 21 Repurchase and cancellation of stock awards (259,643 ) — — — — (30 ) — (30 ) Stock options exercised 2,310,663 — 46 — — (29 ) — 17 Treasury stock repurchased (10,405,457 ) — — (277 ) — — — (277 ) Disposition of a portion of Venator — — 18 — — — — 18 Costs of the secondary offering of Venator — — (2 ) — — — — (2 ) Deconsolidation of Venator — — — — — — 160 160 Accrued and unpaid dividends — — — — — (1 ) — (1 ) Dividends declared on common stock — — — — — (156 ) — (156 ) Balance, December 31, 2018 232,994,172 3 3,984 (427 ) (16 ) 292 (1,316 ) 2,520 Net income — — — — — 562 — 562 Other comprehensive loss — — — — — — (46 ) (46 ) Issuance of nonvested stock awards — — 17 — (17 ) — — — Vesting of stock awards 1,643,368 — 7 — — — — 7 Recognition of stock-based compensation — — 7 — 16 — — 23 Repurchase and cancellation of stock awards (488,441 ) — — — — (12 ) — (12 ) Stock options exercised 246,661 — 4 — — (2 ) — 2 Treasury stock repurchased (10,099,892 ) — — (208 ) — — — (208 ) Acquisition of noncontrolling interests, net of tax — — (11 ) — — — — (11 ) Dividends declared on common stock — — — — — (150 ) — (150 ) Balance, December 31, 2019 224,295,868 3 4,008 (635 ) (17 ) 690 (1,362 ) 2,687 Net income — — — — — 1,034 — 1,034 Other comprehensive loss — — — — — — 16 16 Issuance of nonvested stock awards — — 18 — (18 ) — — — Vesting of stock awards 960,406 — 5 — — — — 5 Recognition of stock-based compensation — — 7 — 16 — — 23 Repurchase and cancellation of stock awards (287,247 ) — — — — (8 ) — (8 ) Stock options exercised 441,754 — 10 — — (7 ) — 3 Treasury stock repurchased (5,364,519 ) — — (96 ) — — — (96 ) Dividends declared on common stock — — — — — (145 ) — (145 ) Balance, December 31, 2020 220,046,262 $ 3 $ 4,048 $ (731 ) $ (19 ) $ 1,564 $ (1,346 ) $ 3,519
Condensed Cash Flow Statement [Table Text Block]	Year ended December 31, 2020 2019 2018 Operating Activities: Net income $ 1,034 $ 562 $ 337 Equity in income of subsidiaries (892 ) (401 ) (163 ) Stock-based compensation 1 1 1 Noncash interest income (2 ) (15 ) (21 ) Changes in operating assets and liabilities (1 ) 13 19 Net cash provided by operating activities 140 160 173 Investing Activities: Repayments of loan by affiliate 380 207 255 Net cash provided by investing activities 380 207 255 Financing Activities: Dividends paid to common stockholders (144 ) (150 ) (156 ) Repurchase and cancellation of stock awards (8 ) (12 ) (30 ) Proceeds from issuance of common stock 3 2 17 Repurchase of common stock (96 ) (208 ) (277 ) (Decrease) increase in payable to affiliates (273 ) 1 16 Net cash used in financing activities (518 ) (367 ) (430 ) Increase (decrease) in cash and cash equivalents 2 — (2 ) Cash and cash equivalents at beginning of period — — 2 Cash and cash equivalents at end of period $ 2 $ — $ —

Note 1 - General (Details Textu

Note 1 - General (Details Textual) $ / shares in Units, € in Millions, shares in Millions, SFr in Millions, $ in Millions

Jan. 15, 2021USD ($)

Jan. 15, 2021EUR (€)

Dec. 23, 2020USD ($)$ / sharesshares

Nov. 03, 2020USD ($)

Feb. 20, 2020USD ($)

Jan. 03, 2020USD ($)

Dec. 31, 2020USD ($)

Nov. 30, 2020USD ($)

Nov. 30, 2020CHF (SFr)

Dec. 31, 2020USD ($)

Dec. 31, 2020USD ($)shares

Dec. 31, 2019USD ($)

Dec. 31, 2018USD ($)

Dec. 05, 2019

Dec. 31, 2017USD ($)

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

Note 2 - Summary of Significa_3

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flow Hedge Derivative, Quarterly Period of Effectiveness Assessment (Month)	3 months
Cumulative Inflation Rate Considered for Economic Environment to Be Highly Inflationary	100.00%
Period Considered for Determining Highly Inflationary Economic Environment (Year)	3 years
Foreign Currency Transaction Gain (Loss), before Tax, Total	$ 2	$ (8)	$ 3
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%	35.00%
Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit)			$ 32
Goodwill, Purchase Accounting Adjustments	$ 259	$ (2)
Goodwill, Foreign Currency Translation Gain (Loss)	$ (2)	$ 1
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	4.3	3	0.8
Interest Costs Capitalized	$ 7	$ 4	$ 4
Minimum [Member]
Cash Flow Hedge Derivative Instrument, Effectiveness Percentage	80.00%
Maximum [Member]
Cash Flow Hedge Derivative Instrument, Effectiveness Percentage	125.00%

Note 2 - Summary of Significa_4

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

Note 2 - Summary of Significa_5

Note 2 - Summary of Significant Accounting Policies - Net Income Per Share (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income from continuing operations attributable to Huntsman Corporation	$ 259	$ 393	$ 608
Net income	$ 1,034	$ 562	$ 337
Weighted average shares outstanding (in shares)	220.6	228.9	238.1
Stock-based awards (in shares)	1.3	1.7	3.5
Total weighted average shares outstanding, including dilutive shares (in shares)	221.9	230.6	241.6

Note 2 - Summary of Significa_6

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

Note 3 - Business Combination_3

Note 3 - Business Combinations and Acquisitions (Details Textual) - USD ($) $ in Thousands	May 18, 2020	Feb. 20, 2020	Sep. 30, 2019	Apr. 23, 2018	Sep. 30, 2018	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Combination, Acquisition Related Costs									$ 0	$ 0	$ 2,000
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests										(84,000)
Sasol-Huntsman [Member]
Percentage of Joint Venture Acquired			50.00%
Payments to Acquire Interest in Joint Venture			$ 101,000
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests										$ (11,000)	0
CVC Thermoset Specialties [Member]
Payments to Acquire Businesses, Gross	$ 304,000
Business Combination, Acquisition Related Costs									$ 5,000
Finite-Lived Intangible Asset, Useful Life (Year)									20 years
Business Acquisition, Goodwill, Expected Tax Deductible Amount						$ 0		$ 0	$ 0
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual						43,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual						(6,000)
Icynene-Lapolla [Member]
Payments to Acquire Businesses, Gross		$ 353,000
Business Combination, Acquisition Related Costs									14,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount						$ 0		0	$ 0
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual								199,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual								$ 12,000
Business Combination, Consideration Transferred, Total		$ 353,000
Demilec Acquisition [Member]
Business Combination, Acquisition Related Costs											$ 5,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual							$ 142,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual							$ 5,000
Business Combination, Consideration Transferred, Total				$ 353,000
Business Acquisition, Percentage of Voting Interests Acquired				100.00%
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year)				15 years
Cash Acquired from Purchase Price Adjustment from Acquisition					$ 4,000

Note 3 - Business Combination_4

Note 3 - Business Combinations and Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	May 18, 2020	Feb. 20, 2020	Apr. 23, 2018	Dec. 31, 2020	Dec. 31, 2019
Goodwill				$ 533	$ 276
CVC Thermoset Specialties [Member]
Payments to Acquire Businesses, Gross	$ 304
Accounts receivable	12
Inventories	37
Property, plant and equipment	67
Intangible assets	117
Goodwill	120
Accounts payable	(7)
Accrued liabilities	(1)
Deferred income taxes	(41)
Total fair value of net assets acquired	304
Cash paid for acquisition	$ 304
Icynene-Lapolla [Member]
Payments to Acquire Businesses, Gross		$ 353
Accounts receivable		36
Inventories		32
Property, plant and equipment		7
Intangible assets		165
Goodwill		139
Accounts payable		(13)
Accrued liabilities		(10)
Deferred income taxes		(14)
Total fair value of net assets acquired		353
Cash paid for acquisition		353
Cash		7
Prepaid expenses and other current assets		1
Other noncurrent assets		3
Business Combination, Consideration Transferred, Total		$ 353
Demilec Acquisition [Member]
Accounts receivable			$ 31
Inventories			23
Property, plant and equipment			21
Intangible assets			177
Goodwill			140
Accounts payable			(16)
Accrued liabilities			(3)
Deferred income taxes			(22)
Total fair value of net assets acquired			353
Cash			1
Prepaid expenses and other current assets			1
Business Combination, Consideration Transferred, Total			$ 353

Note 3 - Business Combination_5

Note 3 - Business Combinations and Acquisitions - Pro Forma Revenues and Net Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CVC Thermoset and Icynene-Lapolla Acquisitions [Member]
Revenues	$ 6,080	$ 7,140
Net income	1,063	616
Net (loss) income	1,031	580
CVC Thermoset and Icynene-Lapolla Acquisitions [Member] | Huntsman International LLC [Member]
Revenues	6,080	7,140
Net income	1,064	605
Net (loss) income	$ 1,032	$ 569
Demilec Acquisition [Member]
Revenues			$ 7,662
Net income			639
Net (loss) income			326
Demilec Acquisition [Member] | Huntsman International LLC [Member]
Revenues			7,662
Net income			625
Net (loss) income			$ 312

Note 3 - Business Combination_6

Note 3 - Business Combinations and Acquisitions - Effects of Changes in Ownership Interest in Joint Venture (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 1,034	$ 562	$ 337
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests		(84)
Huntsman International LLC [Member]
Net income	$ 1,035	551	323
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests		(84)
Sasol-Huntsman [Member]
Net income		562	337
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests		(11)	0
Net transfers to noncontrolling interest		(11)	0
Change from net income attributable to Huntsman Corporation shareholders and transfers to noncontrolling interest		551	337
Sasol-Huntsman [Member] | Huntsman International LLC [Member]
Net income		551	323
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests		(11)	0
Net transfers to noncontrolling interest		(11)	0
Change from net income attributable to Huntsman Corporation shareholders and transfers to noncontrolling interest		$ 540	$ 323

Note 4 - Discontinued Operati_3

Note 4 - Discontinued Operations and Business Dispositions (Details Textual) - USD ($) shares in Millions, $ in Millions	Dec. 23, 2020	Nov. 03, 2020	Jan. 03, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Proceeds from Divestiture of Businesses						$ 2,181	$ 0	$ 0
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment						99	0	0
Equity Securities, FV-NI, Unrealized Gain (Loss), Total						(88)	(19)	(62)
Gain (Loss) on Disposition of Business						247	0	$ 0
Venator Materials PLC [Member]
Equity Method Investment, Ownership Percentage								49.00%
Equity Securities, FV-NI, Unrealized Gain (Loss), Total						(55)	$ (19)	$ (62)
Loss from Equity Method Investment Accounted For at Fair Value						88
Equity Method Investment Accounted for at Fair Value, Loss from Adjustment to Mark to Fair Value						43
Equity Method Investment Accounted for at Fair Value, Loss Related to Sale of Ordinary Shares						12
Loss on Write-off of Receivable Related to Income Tax Benefits Associated With Investment				$ 31		$ 31
Venator Materials PLC [Member] | SK Capital Partners, LP [Member]
Equity Method Investment Using Fair Value Option, Number of Shares Sold (in shares)	42.4					42.4
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment	$ 99
Chemical Intermediates Businesses [Member]
Income Taxes Paid Related to the Sale of a Business						$ 231
Chemical Intermediates Businesses [Member] | Discontinued Operations, Disposed of by Sale [Member]
Disposal Group, Including Discontinued Operation, Consideration			$ 2,000
Proceeds from Divestiture of Businesses			1,920
Disposal Group, Including Discontinued Operation, Pension and Other Post Employment Plan Benefit Obligation			$ 72
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total						748
Effect of LIFO Inventory Liquidation on Income						19
Income Taxes Paid Related to the Sale of a Business						231
India-Based Do It Yourself Consumer Adhesives Business [Member]
Income Taxes Paid Related to the Sale of a Business						$ 26
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

Note 4 - Discontinued Operati_4

Note 4 - Discontinued Operations and Business Dispositions - Summary of Major Classes of Line Items of Discontinued Operations (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income tax expense		$ (242)	$ (35)	$ (86)
Income (loss) from discontinued operations, net of tax		775	169	(39)
Net income (loss) attributable to discontinued operations		775	169	(271)
Discontinued Operations, Held-for-sale [Member] | Chemical Intermediates Businesses [Member]
Accounts receivable			145
Inventories			105
Property, plant and equipment, net			720
Operating lease right-of-use assets			69
Deferred income taxes			4
Other noncurrent assets			165
Total assets held for sale	[1]		1,208
Accounts payable			152
Accrued liabilities			26
Current operating lease liabilities			20
Deferred income taxes			135
Noncurrent operating lease liabilities			51
Other noncurrent liabilities			128
Total liabilities held for sale	[1]		512
Trade sales, services and fees, net	[2],[3]		1,545
Cost of goods sold	[2],[3]		1,287
Gain on sale of the Chemical Intermediates Businesses	[2],[3]		0
Other expense items, net that are not major	[2]		54
Income from discontinued operations before income taxes			204
Income tax expense			(35)
Loss on disposal			0
Valuation allowance			0
Income (loss) from discontinued operations, net of tax			169
Net income attributable to noncontrolling interests			0
Net income (loss) attributable to discontinued operations			$ 169
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Chemical Intermediates Businesses [Member]
Trade sales, services and fees, net	[2],[3]	7		3,923
Cost of goods sold	[2],[3]	(37)		2,847
Gain on sale of the Chemical Intermediates Businesses	[2],[3]	978		0
Other expense items, net that are not major	[2]	5		332
Income from discontinued operations before income taxes		1,017		744
Income tax expense		(242)		(86)
Loss on disposal		0		(427)
Valuation allowance		0		(270)
Income (loss) from discontinued operations, net of tax		775		(39)
Net income attributable to noncontrolling interests		0		(6)
Net income (loss) attributable to discontinued operations		$ 775		$ (45)
[1]	The assets and liabilities held for sale are classified as current as of December 31, 2019 because the sale of our Chemical Intermediates Businesses was completed on January 3, 2020.
[2]	Discontinued operations primarily include our Chemical Intermediates Businesses for all periods presented. We began accounting for our investment in Venator as an equity method investment on December 3, 2018. Therefore, the summarized financial data only includes the results of Venator applicable to the period from January 1, 2017 through December 2, 2018.
[3]	Includes eliminations of trade sales, services and fees, net and cost of sales between continuing operations and discontinued operations.

Note 5 - Inventories (Details T

Note 5 - Inventories (Details Textual)	Dec. 31, 2020	Dec. 31, 2019
Percentage of LIFO Inventory	7.00%	9.00%

Note 5 - Inventories - Inventor

Note 5 - Inventories - Inventories (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Raw materials and supplies		$ 180	$ 175
Work in progress		44	49
Finished goods		651	718
Total		875	942
LIFO reserves		(27)	(28)
Net inventories	[1]	$ 848	$ 914
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."

Note 6 - Property, Plant and _3

Note 6 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation, Total	$ 242	$ 245	$ 239
Huntsman International LLC [Member]
Depreciation, Total	$ 242	$ 245	$ 236

Note 6 - Property, Plant and _4

Note 6 - Property, Plant and Equipment - Schedule of Cost and Accumulated Depreciation of Property, Plant and Equipment (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total		$ 6,033	$ 5,688
Less accumulated depreciation		(3,528)	(3,305)
Net	[1],[2]	2,505	2,383
Huntsman International LLC [Member]
Total		6,121	5,742
Less accumulated depreciation		(3,616)	(3,359)
Net	[3]	2,505	2,383
Land [Member]
Total		97	103
Land [Member] | Huntsman International LLC [Member]
Total		97	103
Building [Member]
Total		540	605
Building [Member] | Huntsman International LLC [Member]
Total		540	605
Plant and Equipment [Member]
Total		5,039	4,695
Plant and Equipment [Member] | Huntsman International LLC [Member]
Total		5,127	4,749
Construction in Progress [Member]
Total		357	285
Construction in Progress [Member] | Huntsman International LLC [Member]
Total		$ 357	$ 285
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	Long-lived assets consist of property, plant and equipment, net.
[3]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."

Note 7 - Investment in Uncons_3

Note 7 - Investment in Unconsolidated Affiliates (Details Textual) - USD ($) shares in Millions, $ in Millions	Dec. 23, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity Securities, FV-NI		$ 32	$ 0
Venator Materials PLC [Member]
Equity Method Investment, Ownership Percentage				49.00%
Venator Materials PLC [Member] | Other Noncurrent Assets [Member]
Equity Securities, FV-NI		$ 32
Venator Materials PLC [Member] | SK Capital Partners, LP [Member]
Equity Method Investment Using Fair Value Option, Number of Shares Sold (in shares)	42.4	42.4
BASF Huntsman Shanghai Isocyanate Investment BV [Member]
Equity Method Investment, Ownership Percentage		50.00%	50.00%
BASF Huntsman Shanghai Isocyanate Investment BV [Member] | SLIC [Member]
Ownership Interest Held by Equity Method Investee		70.00%
Indirect Ownership Percentage		35.00%

Note 7 - Investment in Uncons_4

Note 7 - Investment in Unconsolidated Affiliates (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total equity method investments		$ 373	$ 535
Venator Materials PLC [Member]
Total equity method investments	[1]	0	200
BASF Huntsman Shanghai Isocyanate Investment BV [Member]
Total equity method investments	[2]	111	112
Nanjing Jinling Huntsman New Material Co., Ltd. [Member]
Total equity method investments		229	196
Jurong Ningwu New Material Development Co., Ltd. [Member]
Total equity method investments		$ 33	$ 27
[1]	On December 23, 2020, we completed the sale of approximately 42.4 million ordinary shares of Venator, and we no longer account for our current remaining ownership interest in Venator as an equity method investment, but rather as an investment in equity securities that are marked to fair value with changes in fair value reported in earnings. As of December 31, 2020, our investment in Venator was $32 million and was included in other noncurrent assets on our consolidated balance sheets.
[2]	We own 50% of BASF Huntsman Shanghai Isocyanate Investment BV. BASF Huntsman Shanghai Isocyanate Investment BV owns a 70% interest in SLIC, thus giving us an indirect 35% interest in SLIC.

Note 7 - Investment in Uncons_5

Note 7 - Investment in Unconsolidated Affiliates (Details) (Parentheticals)	Dec. 31, 2020	Dec. 31, 2019
BASF Huntsman Shanghai Isocyanate Investment BV [Member]
Equity Method Investment, Ownership Percentage	50.00%	50.00%
Nanjing Jinling Huntsman New Material Co., Ltd. [Member]
Equity Method Investment, Ownership Percentage	49.00%	49.00%
Jurong Ningwu New Material Development Co., Ltd. [Member]
Equity Method Investment, Ownership Percentage	30.00%	30.00%

Note 7 - Investment in Uncons_6

Note 7 - Investment in Unconsolidated Affiliates - Summarized Financial Information of Unconsolidated Affiliates (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current assets		$ 3,568	$ 3,755
Current liabilities		1,979	2,008
Noncontrolling interests		154	137
Revenues	[1]	6,018	6,797	$ 7,604
Gross profit		4,918	5,415	5,840
(Loss) income from continuing operations		291	429	689
Net income		1,034	562	337
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Current assets		1,544	1,439
Non-current assets		2,317	2,436
Current liabilities		574	688
Non-current liabilities		1,804	1,614
Noncontrolling interests		6	7
Revenues		3,544	4,025	2,181	[2]
Gross profit		338	454	221	[2]
(Loss) income from continuing operations		(2)	99	124	[2]
Net income		$ (2)	$ 99	$ 124	[2]
[1]	Geographic information for revenues is based upon countries into which product is sold.
[2]	We began accounting for our investment in Venator as an equity method investment on December 3, 2018 and then as an investment in equity securities on December 23, 2020 and thereafter. Therefore, the summarized financial data only includes information for Venator for the years ended December 31, 2020 and 2019 and the period from December 3, 2018 through December 31, 2018.

Note 8 - Variable Interest En_3

Note 8 - Variable Interest Entities (Details Textual)	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2020
Sasol-Huntsman [Member]
Percentage of Joint Venture Acquired	50.00%
Rubicon LLC [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage		50.00%
Arabian Amines Company [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage		50.00%	50.00%
Sasol-Huntsman [Member]
Variable Interest Entity, Ownership Percentage Acquired	50.00%

Note 8 - Variable Interest En_4

Note 8 - Variable Interest Entities - Schedule of Financial Information of Variable Interest Entities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Current assets		$ 3,568	$ 3,755
Property, plant and equipment, net	[1],[2]	2,505	2,383
Operating lease right-of-use assets		445	396
Deferred income taxes		288	292
Total assets		8,713	8,320
Current liabilities		1,979	2,008
Long-term debt	[1]	1,528	2,177
Noncurrent operating lease liabilities	[1]	411	384
Other noncurrent liabilities	[1]	910	898
Deferred income taxes		212	29
Total liabilities		5,040	5,496
Revenues	[3]	6,018	6,797		$ 7,604
Income from continuing operations before income taxes		337	391		734
Net cash provided by operating activities		253	897		1,207
Variable Interest Entity, Primary Beneficiary [Member]
Current assets		49	50
Property, plant and equipment, net		167	180
Operating lease right-of-use assets		22	16
Other noncurrent assets		138	132
Deferred income taxes		30	30
Total assets		406	408
Current liabilities		183	151
Long-term debt		3	29
Noncurrent operating lease liabilities		17	11
Other noncurrent liabilities		82	87
Deferred income taxes		1	0
Total liabilities		286	278
Revenues		0	95	[4]	154
Income from continuing operations before income taxes		4	17	[4]	40
Net cash provided by operating activities		$ 10	$ 81	[4]	$ 65
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	Long-lived assets consist of property, plant and equipment, net.
[3]	Geographic information for revenues is based upon countries into which product is sold.
[4]	As of September 30, 2019, Sasol-Huntsman was no longer accounted for as a variable interest entity. Therefore, this financial data only includes information for Sasol-Huntsman applicable to the period from January 1, 2019 through September 30, 2019.

Note 9 - Leases (Details Textua

Note 9 - Leases (Details Textual) $ in Thousands, SFr in Millions	1 Months Ended		12 Months Ended
	Nov. 30, 2020USD ($)	Nov. 30, 2020CHF (SFr)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Variable Lease, Cost			$ 0	$ 0
Short-term Lease, Cost			3,000	$ 1,000
Operating Leases, Rent Expense, Net, Total					$ 55,000
Operating Lease Not Yet Commenced			$ 9,000
Sale and Leaseback of Certain Properties in Basel, Switzerland [Member]
Sale Leaseback Transaction, Proceeds Received	$ 73,000	SFr 67
Sale Leaseback Transaction, Period of Leaseback (Year)	5 years	5 years
Sale and Leaseback Transaction, Gain (Loss), Net	$ 33,000	SFr 30
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)			1 month
Lessee, Operating Lease, Renewal Term (Year)			1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Month)			37 years
Lessee, Operating Lease, Renewal Term (Year)			30 years
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)			7 years

Note 9 - Leases - Components of

Note 9 - Leases - Components of Lease Expense and Cash Flows (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Operating lease expense	[1],[2]	$ 66	$ 56
Operating cash flows from operating leases		74	53
Leased assets obtained in exchange for new operating lease liabilities		91	416
Cost of Sales [Member]
Operating lease expense		34	35
Selling, General and Administrative Expenses [Member]
Operating lease expense		26	15
Research and Development Expense [Member]
Operating lease expense		$ 6	$ 6
[1]	Total operating lease expense for the year ended December 31, 2018 was $55 million.
[2]	Total operating lease expense includes short-term lease expense of approximately $3 million and $1 million for the years ended December 31, 2020 and 2019, respectively.

Note 9 - Leases - Lease Term an

Note 9 - Leases - Lease Term and Discount Rate (Details)	Dec. 31, 2020	Dec. 31, 2019
Weighted-average remaining lease term (Year)	11 years	11 years
Weighted-average discount rate	4.00%	4.10%

Note 9 - Leases - Undiscounted

Note 9 - Leases - Undiscounted Cash Flows (Details) $ in Millions	Dec. 31, 2020USD ($)
2021	$ 68
2022	62
2023	58
2024	55
2025	51
Thereafter	276
Total lease payments	570
Less imputed interest	(107)
Total	$ 463

Note 10 - Intangible Assets (De

Note 10 - Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Amortization of Intangible Assets, Total	$ 33	$ 16	$ 6
Huntsman International LLC [Member]
Amortization of Intangible Assets, Total	$ 33	$ 16	$ 6

Note 10 - Intangible Assets - G

Note 10 - Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Carrying Amount		$ 808	$ 518
Accumulated Amortization		355	321
Net		453	197
Huntsman International LLC [Member]
Carrying Amount		816	527
Accumulated Amortization		363	330
Net		453	197
Patents, Trademarks and Technology [Member]
Carrying Amount		316	314
Accumulated Amortization		237	230
Net		79	84
Patents, Trademarks and Technology [Member] | Huntsman International LLC [Member]
Carrying Amount		316	314
Accumulated Amortization		237	230
Net		79	84
Licensing Agreements [Member]
Carrying Amount		140	140
Accumulated Amortization		61	48
Net		79	92
Licensing Agreements [Member] | Huntsman International LLC [Member]
Carrying Amount		140	140
Accumulated Amortization		61	48
Net		79	92
Noncompete Agreements [Member]
Carrying Amount		3	3
Accumulated Amortization		2	2
Net		1	1
Noncompete Agreements [Member] | Huntsman International LLC [Member]
Carrying Amount		3	3
Accumulated Amortization		2	2
Net		1	1
Other Intangible Assets [Member]
Carrying Amount	[1]	349	61
Accumulated Amortization		55	41
Net		294	20
Other Intangible Assets [Member] | Huntsman International LLC [Member]
Carrying Amount	[1]	357	70
Accumulated Amortization	[1]	63	50
Net	[1]	$ 294	$ 20
[1]	Includes provisional intangible asset fair values related to the CVC Thermoset Specialties Acquisition and the Icynene-Lapolla Acquisition. For more information, see "Note 3. Business Combinations and Acquisitions."

Note 10 - Intangible Assets - E

Note 10 - Intangible Assets - Estimated Future Amortization Expense (Details) $ in Millions	Dec. 31, 2020USD ($)
2021	$ 30
2022	34
2023	34
2024	34
2025	$ 34

Note 11 - Other Noncurrent As_3

Note 11 - Other Noncurrent Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Amortization Expense of Catalyst, Assets	$ 8	$ 9	$ 10

Note 11 - Other Noncurrent As_4

Note 11 - Other Noncurrent Assets - Summary of Other Noncurrent Assets (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Capitalized turnaround costs, net		$ 250	$ 223
Equity Securities, FV-NI		32	0
Catalyst assets, net		27	24
Other		239	205
Total	[1]	$ 548	$ 452
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."

Note 12 - Accrued Liabilities -

Note 12 - Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Payroll and related accruals		$ 97	$ 100
Income taxes		73	59
Taxes other than income taxes		56	64
Volume and rebate accruals		55	53
Other miscellaneous accruals		177	144
Total	[1]	458	420
Huntsman International LLC [Member]
Payroll and related accruals		97	100
Income taxes		73	59
Taxes other than income taxes		56	64
Volume and rebate accruals		55	53
Other miscellaneous accruals		174	141
Total	[2]	$ 455	$ 417
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."

Note 13 - Restructuring, Impa_3

Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits) (Details Textual) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2023	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Proceeds from Sale of Productive Assets, Total				$ 75	$ 50	$ 0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal				281	49	(3)
Restructuring Reserve, Accrual Adjustment				(1)	(4)	(31)
Corporate and Reconciling Items [Member]
Restructuring Reserve, Accrual Adjustment				0	0	(1)
Corporate and Reconciling Items [Member] | Corporate Initiatives [Member]
Restructuring Charges, Total						15
Polyurethanes [Member] | Operating Segments [Member]
Restructuring Reserve, Accrual Adjustment				0	0	0
Performance Products [Member] | Operating Segments [Member]
Restructuring Reserve, Accrual Adjustment				0	0	(1)
Advanced Materials [Member] | Operating Segments [Member]
Restructuring Reserve, Accrual Adjustment				(1)	0	0
Textile Effects [Member] | Operating Segments [Member]
Restructuring Reserve, Accrual Adjustment				0	(4)	(29)
Textile Effects [Member] | Operating Segments [Member] | Basel, Switzerland [Member]
Restructuring and Related Cost, Gain on Sale of Land						4
Textile Effects [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Basel, Switzerland Production Facilities and Support Offices [Member]
Proceeds from Sale of Productive Assets, Total	$ 49
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ 49
Employee Severance [Member]
Restructuring Reserve, Accrual Adjustment				0	(2)	(2)
Employee Severance [Member] | Polyurethanes [Member]
Restructuring Charges, Total				9
Restructuring and Related Cost, Expected Cost, Total				4
Employee Severance [Member] | Performance Products [Member]
Restructuring Charges, Total				4
Employee Severance [Member] | Advanced Materials [Member]
Restructuring Charges, Total				10
Employee Severance [Member] | Textile Effects [Member]
Restructuring Charges, Total				7
Program to Optimize Downstream Footprint [Member] | Polyurethanes [Member]
Restructuring Charges, Total				12
Program to Optimize Downstream Footprint [Member] | Polyurethanes [Member] | Minimum [Member]
Restructuring and Related Cost, Expected Cost, Total				15
Program to Optimize Downstream Footprint [Member] | Polyurethanes [Member] | Maximum [Member]
Restructuring and Related Cost, Expected Cost, Total				20
Non-cancelable Lease Cost and Contract Termination Costs [Member]
Restructuring Reserve, Accrual Adjustment				$ 0	0	$ (29)
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Textile Effects [Member] | Operating Segments [Member] | Basel, Switzerland [Member]
Restructuring Settlement To Be Made		$ 10
Payments for Restructuring					$ 8
Restructuring Reserve, Accrual Adjustment		$ 29
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Textile Effects [Member] | Operating Segments [Member] | Basel, Switzerland [Member] | Forecast [Member]
Payments for Restructuring			$ 2

Note 13 - Restructuring, Impa_4

Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits) - Accrued Restructuring Costs By Type of Cost and Initiative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accrued liabilities	$ 17	$ 28	$ 53
Restructuring Reserve, Accrual Adjustment	(1)	(4)	(31)
Foreign currency effect on liability balance	1
Accrued liabilities	31	17	28
Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			2
Restructuring payments			(5)
Initiatives 2018 [Member]
Restructuring Charges, Total			15
Restructuring payments			(6)
Initiatives 2018 and Prior [Member]
Restructuring Charges, Total		6
Restructuring payments		(20)
Restructuring charges (credits)		6
Initiatives 2019 [Member]
Restructuring Charges, Total		8
Restructuring payments		(1)
Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	5
Restructuring payments	(16)
Initiatives 2020 [Member]
Restructuring Charges, Total	38
Restructuring payments	(13)
Employee Severance [Member]
Accrued liabilities	8	5	5
Restructuring Reserve, Accrual Adjustment	0	(2)	(2)
Foreign currency effect on liability balance	1
Accrued liabilities	29	8	5
Employee Severance [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			0
Restructuring payments			(2)
Employee Severance [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			5
Restructuring payments			(1)
Employee Severance [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(4)
Restructuring charges (credits)		2
Employee Severance [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		7
Restructuring payments		0
Employee Severance [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	(5)
Employee Severance [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	35
Restructuring payments	(10)
Demolition and Decommissioning [Member]
Accrued liabilities	0	1	2
Restructuring Reserve, Accrual Adjustment	0	0	0
Foreign currency effect on liability balance	0
Accrued liabilities	0	0	1
Demolition and Decommissioning [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			0
Restructuring payments			(1)
Demolition and Decommissioning [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			0
Restructuring payments			0
Demolition and Decommissioning [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		0
Restructuring charges (credits)		(1)
Demolition and Decommissioning [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		0
Restructuring payments		0
Demolition and Decommissioning [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	0
Demolition and Decommissioning [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	0
Restructuring payments	0
Non-cancelable Lease Cost and Contract Termination Costs [Member]
Accrued liabilities	7	12	41
Restructuring Reserve, Accrual Adjustment	0	0	(29)
Foreign currency effect on liability balance	0
Accrued liabilities	2	7	12
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			2
Restructuring payments			(2)
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			0
Restructuring payments			0
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(7)
Restructuring charges (credits)		2
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		0
Restructuring payments		0
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	2
Restructuring payments	(7)
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	0
Restructuring payments	0
Other Restructuring [Member]
Accrued liabilities	2	10	5
Restructuring Reserve, Accrual Adjustment	(1)	(2)	0
Foreign currency effect on liability balance	0
Accrued liabilities	0	2	10
Other Restructuring [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			0
Restructuring payments			0
Other Restructuring [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			10
Restructuring payments			$ (5)
Other Restructuring [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(9)
Restructuring charges (credits)		3
Other Restructuring [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		1
Restructuring payments		$ (1)
Other Restructuring [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	3
Restructuring payments	(4)
Other Restructuring [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	3
Restructuring payments	$ (3)

Note 13 - Restructuring, Impa_5

Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits) - Reserves for Restructuring, Impairment and Plant Closing Costs By Segment and Initiative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accrued liabilities	$ 17	$ 28	$ 53
Restructuring Reserve, Accrual Adjustment	(1)	(4)	(31)
Foreign currency effect on liability balance	1
Accrued liabilities	31	17	28
Current portion of restructuring reserves	26
Long-term portion of restructuring reserves	5
Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			2
Restructuring payments			(5)
Initiatives 2018 [Member]
Restructuring Charges, Total			15
Restructuring payments			(6)
Initiatives 2018 and Prior [Member]
Restructuring Charges, Total		6
Restructuring payments		(20)
Restructuring charges (credits)		6
Initiatives 2019 [Member]
Restructuring Charges, Total		8
Restructuring payments		(1)
Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	5
Restructuring payments	(16)
Initiatives 2020 [Member]
Restructuring Charges, Total	38
Restructuring payments	(13)
Corporate and Reconciling Items [Member]
Accrued liabilities	4	7	1
Restructuring Reserve, Accrual Adjustment	0	0	(1)
Foreign currency effect on liability balance	0
Accrued liabilities	0	4	7
Current portion of restructuring reserves	0
Long-term portion of restructuring reserves	0
Corporate and Reconciling Items [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			5
Restructuring payments			(3)
Corporate and Reconciling Items [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			10
Restructuring payments			(5)
Corporate and Reconciling Items [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(8)
Restructuring charges (credits)		4
Corporate and Reconciling Items [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		1
Restructuring payments		0
Corporate and Reconciling Items [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	4
Restructuring payments	(8)
Corporate and Reconciling Items [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	2
Restructuring payments	(2)
Polyurethanes [Member] | Operating Segments [Member]
Accrued liabilities	0	0	1
Restructuring Reserve, Accrual Adjustment	0	0	0
Foreign currency effect on liability balance	0
Accrued liabilities	12	0	0
Current portion of restructuring reserves	12
Long-term portion of restructuring reserves	0
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			0
Restructuring payments			(1)
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			0
Restructuring payments			0
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		0
Restructuring charges (credits)		0
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		0
Restructuring payments		0
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	(1)
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	16
Restructuring payments	(3)
Performance Products [Member] | Operating Segments [Member]
Accrued liabilities	0	1	1
Restructuring Reserve, Accrual Adjustment	0	0	(1)
Foreign currency effect on liability balance	0
Accrued liabilities	2	0	1
Current portion of restructuring reserves	2
Long-term portion of restructuring reserves	0
Performance Products [Member] | Operating Segments [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			1
Restructuring payments			(1)
Performance Products [Member] | Operating Segments [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			2
Restructuring payments			(1)
Performance Products [Member] | Operating Segments [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(1)
Restructuring charges (credits)		0
Performance Products [Member] | Operating Segments [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		0
Restructuring payments		0
Performance Products [Member] | Operating Segments [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	1
Restructuring payments	0
Performance Products [Member] | Operating Segments [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	4
Restructuring payments	(3)
Advanced Materials [Member] | Operating Segments [Member]
Accrued liabilities	10	6	3
Restructuring Reserve, Accrual Adjustment	(1)	0	0
Foreign currency effect on liability balance	0
Accrued liabilities	9	10	6
Current portion of restructuring reserves	6
Long-term portion of restructuring reserves	3
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			0
Restructuring payments			0
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			3
Restructuring payments			0
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(2)
Restructuring charges (credits)		0
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		7
Restructuring payments		(1)
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	(1)
Restructuring payments	(5)
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	9
Restructuring payments	(3)
Textile Effects [Member] | Operating Segments [Member]
Accrued liabilities	3	14	47
Restructuring Reserve, Accrual Adjustment	0	(4)	(29)
Foreign currency effect on liability balance	1
Accrued liabilities	8	3	14
Current portion of restructuring reserves	6
Long-term portion of restructuring reserves	2
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			(4)
Restructuring payments			0
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2018 [Member]
Restructuring Charges, Total			0
Restructuring payments			$ 0
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2018 and Prior [Member]
Restructuring payments		(9)
Restructuring charges (credits)		2
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2019 [Member]
Restructuring Charges, Total		0
Restructuring payments		$ 0
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	1
Restructuring payments	(2)
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2020 [Member]
Restructuring Charges, Total	7
Restructuring payments	$ (2)

Note 13 - Restructuring, Impa_6

Note 13 - Restructuring, Impairment and Plant Closing Costs (Credits) - Cash and Noncash Restructuring Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reversal of reserves no longer required	$ (1)	$ (4)	$ (31)
Accelerated depreciation	7
Total restructuring, impairment and plant closing credits	49	(41)	(7)
Gain on sale of assets		(49)
Other noncash credits		(2)	7
Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	5
Initiatives 2020 [Member]
Restructuring Charges, Total	$ 38
Initiatives 2018 and Prior [Member]
Restructuring Charges, Total		6
Initiatives 2019 [Member]
Restructuring Charges, Total		$ 8
Initiatives 2017 and Prior [Member]
Restructuring Charges, Total			2
Initiatives 2018 [Member]
Restructuring Charges, Total			$ 15

Note 14 - Other Noncurrent Li_3

Note 14 - Other Noncurrent Liabilities - Summary of Other Noncurrent Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Pension liabilities		$ 680	$ 650
Other postretirement benefits		59	55
Employee benefit accrual		44	38
Other		127	155
Total	[1]	910	898
Huntsman International LLC [Member]
Pension liabilities		680	650
Other postretirement benefits		59	55
Employee benefit accrual		44	38
Other		117	147
Total	[2]	$ 900	$ 890
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."

Note 15 - Debt (Details Textual

Note 15 - Debt (Details Textual) € in Millions, $ in Millions		Jan. 15, 2021USD ($)	Jan. 15, 2021EUR (€)	Sep. 30, 2019	Mar. 27, 2019USD ($)	Mar. 13, 2019USD ($)	May 21, 2018USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2020USD ($)	Jan. 03, 2020USD ($)	Sep. 24, 2019USD ($)	Sep. 24, 2019EUR (€)	Apr. 18, 2019EUR (€)	Apr. 17, 2019EUR (€)
Debt Issuance Costs, Net, Total									$ 9	$ 11		$ 9
Gain (Loss) on Extinguishment of Debt, Total									0	(23)	$ (3)
Payment for Debt Extinguishment or Debt Prepayment Cost									0	21	0
Total Debt, Excluding Debt to Affiliates									2,121			2,121
Long-term Debt, Current Maturities, Total	[1]								593	212		593
Long-term Debt, Excluding Current Maturities, Total	[1]								1,528	2,177		1,528
Notes Receivable, Related Parties									$ 380			$ 380
Sasol-Huntsman [Member]
Variable Interest Entity, Ownership Percentage Acquired				50.00%
Arabian Amines Company [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage									50.00%			50.00%
Total Debt, Excluding Debt to Affiliates									$ 50			$ 50
Long-term Debt, Current Maturities, Total									47			47
Long-term Debt, Excluding Current Maturities, Total									3			3
Senior Notes Maturing April 2021 [Member] | Subsequent Event [Member]
Debt Instrument, Redemption Price, Percentage		100.00%	100.00%
Debt Instrument, Amount Redeemed		$ 541	€ 445
Huntsman International LLC [Member]
Gain (Loss) on Extinguishment of Debt, Total									0	(23)	(3)
Payment for Debt Extinguishment or Debt Prepayment Cost									0	21	$ 0
Long-term Debt, Current Maturities, Total	[2]								593	212		593
Long-term Debt, Excluding Current Maturities, Total	[2]								1,528	2,177		1,528
Huntsman International LLC [Member] | Sasol-Huntsman [Member]
Variable Interest Entity, Ownership Percentage Acquired				50.00%
Huntsman International LLC [Member] | The 2018 Revolving Credit Facility [Member]
Line Of Credit Facility, Contingent Increase, Additional Borrowing Capacity							$ 500
Letters of Credit Outstanding, Amount									$ 6			6
Huntsman International LLC [Member] | The 2018 Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	[3]								1.50%
Huntsman International LLC [Member] | Prior Credit Facility [Member]
Repayments of Long-term Lines of Credit							650
Gain (Loss) on Extinguishment of Debt, Total							$ (3)
Huntsman International LLC [Member] | The 2019 Term Loan [Member]
Debt Instrument, Face Amount														$ 101	€ 92
Huntsman International LLC [Member] | US Accounts Receivable Program Maturing March 2018 [Member]
Maximum Funding Availability | €																€ 100	€ 150
Huntsman International LLC [Member] | US Accounts Receivable Program Maturing April 2022 [Member]
Letters of Credit Outstanding, Amount									$ 4			4
Maximum Funding Availability										250			$ 150
Huntsman International LLC [Member] | Accounts Receivable Programs [Member]
Pledged Financial Instruments, Not Separately Reported, Loans Receivable Pledged as Collateral, Total									$ 198	$ 221		$ 198
Huntsman International LLC [Member] | The Senior Notes [Member] | Debt Instrument Redemption Period Upon Occurrence of Certain Change of Control Events [Member]
Debt Instrument, Redemption Price, Percentage									101.00%
Huntsman International LLC [Member] | The 2029 Senior Notes [Member]
Gain (Loss) on Extinguishment of Debt, Total								$ (23)
Debt Instrument, Face Amount						$ 750
Debt Instrument, Redemption Price, Percentage						100.00%
Debt Instrument, Interest Rate, Stated Percentage						4.50%
Huntsman International LLC [Member] | The 2020 Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage					4.875%
Early Repayment of Senior Debt					$ 650
Payment for Debt Extinguishment or Debt Prepayment Cost					21
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total					$ 12
Huntsman International LLC [Member] | Senior Notes Maturing April 2021 [Member]
Debt Instrument, Interest Rate, Stated Percentage									5.125%			5.125%
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."
[3]	Interest rates on borrowings under the Revolving Credit Facility vary based on the type of loan and Huntsman International's debt ratings. The then applicable interest rate as of December 31, 2020 was 1.50% above LIBOR.

Note 15 - Debt - Outstanding De

Note 15 - Debt - Outstanding Debt (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Total debt, excluding debt to affiliates		$ 2,121	$ 2,389
Total current portion of debt	[1]	593	212
Long-term portion of debt	[1]	1,528	2,177
Total debt		2,121	2,389
Total debt, excluding debt to affiliates		2,121	2,389
Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		2,121	2,389
Total current portion of debt	[2]	593	212
Long-term portion of debt	[2]	1,528	2,177
Total debt		2,121	2,769
Total debt, excluding debt to affiliates		2,121	2,389
Notes payable to affiliates-current		0	100
Notes payable to affiliates-noncurrent		0	280
The 2018 Revolving Credit Facility [Member]
Total debt, excluding debt to affiliates		0	40
Total debt, excluding debt to affiliates		0	40
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		0	40
Total debt	[3]	0
Total debt, excluding debt to affiliates		0	40
Accounts Receivable Programs [Member]
Total debt, excluding debt to affiliates		0	167
Total debt, excluding debt to affiliates		0	167
Accounts Receivable Programs [Member] | Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		0	167
Total debt, excluding debt to affiliates		0	167
The 2019 Term Loan [Member]
Total debt, excluding debt to affiliates		0	103
Total debt, excluding debt to affiliates		0	103
The 2019 Term Loan [Member] | Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		0	103
Total debt, excluding debt to affiliates		0	103
The Senior Notes [Member]
Total debt, excluding debt to affiliates		2,047	1,963
Total debt, excluding debt to affiliates		2,047	1,963
The Senior Notes [Member] | Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		2,047	1,963
Total debt, excluding debt to affiliates		2,047	1,963
Variable Interest Entities Debt [Member]
Total debt, excluding debt to affiliates		50	65
Total debt, excluding debt to affiliates		50	65
Variable Interest Entities Debt [Member] | Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		50	65
Total debt, excluding debt to affiliates		50	65
Other Debt Instruments [Member]
Total debt, excluding debt to affiliates		24	51
Total debt, excluding debt to affiliates		24	51
Other Debt Instruments [Member] | Huntsman International LLC [Member]
Total debt, excluding debt to affiliates		24	51
Total debt, excluding debt to affiliates		$ 24	$ 51
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[2]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease liabilities and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheet captions above. See "Note 8. Variable Interest Entities."
[3]	On December 31, 2020, we had an additional $6 million (U.S. dollar equivalents) of letters of credit and bank guarantees issued and outstanding under our Revolving Credit Facility.

Note 15 - Debt - Revolving Cred

Note 15 - Debt - Revolving Credit Facility (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Amount outstanding		$ 2,121	$ 2,389
Huntsman International LLC [Member]
Amount outstanding		2,121	$ 2,769
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member]
Committed amount		1,200
Principal outstanding	[1]	0
Unamortized discounts and debt issuance costs	[1]	0
Amount outstanding	[1]	$ 0
Maturity		Dec. 31, 2023
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member] | London Interbank Offered Rate (LIBOR) [Member]
Interest rate	[2]	1.50%
[1]	On December 31, 2020, we had an additional $6 million (U.S. dollar equivalents) of letters of credit and bank guarantees issued and outstanding under our Revolving Credit Facility.
[2]	Interest rates on borrowings under the Revolving Credit Facility vary based on the type of loan and Huntsman International's debt ratings. The then applicable interest rate as of December 31, 2020 was 1.50% above LIBOR.

Note 15 - Debt - Accounts Recei

Note 15 - Debt - Accounts Receivable Programs (Details) $ in Thousands, € in Millions		12 Months Ended
		Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)	Dec. 31, 2019USD ($)
Amount outstanding		$ 2,121,000		$ 2,389,000
Approximate maximum funding availability under all A/R programs		123,000
Approximate amount outstanding under all A/R programs		$ 0
US A/R Program [Member]
Maturity		Apr. 30, 2022
Maximum funding availability	[1]	$ 150,000
Amount outstanding	[2]	$ 0
US A/R Program [Member] | London Interbank Offered Rate (LIBOR) [Member]
Interest rate	[3]	0.90%
EU A/R Program [Member]
Maturity		Apr. 30, 2022
Maximum funding availability | €	[1]		€ 100
Amount outstanding | €			€ 0
EU A/R Program [Member] | GBP LIBOR, USD LIBOR or EURIBOR [Member]
Interest rate	[3]	1.30%
[1]	The amount of actual availability under our A/R Programs may be lower based on the level of eligible receivables sold, changes in the credit ratings of our customers, customer concentration levels and certain characteristics of the accounts receivable being transferred, as defined in the applicable agreements.
[2]	As of December 31, 2020, we had approximately $4 million (U.S. dollar equivalents) of letters of credit issued and outstanding under our U.S. A/R Program.
[3]	The applicable rate for our U.S. A/R Program is defined by the lender as USD LIBOR. The applicable rate for our EU A/R Program is either GBP LIBOR, USD LIBOR or EURIBOR.

Note 15 - Debt - Notes Outstand

Note 15 - Debt - Notes Outstanding (Details) - Huntsman International LLC [Member] € in Millions, $ in Millions	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)
Senior Notes Maturing April 2021 [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.125%	5.125%
Principal outstanding | €		€ 445
Unamortized premiums, discounts and debt issuance costs	$ 0
Senior Notes Maturing November 2022 [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.125%	5.125%
Principal outstanding	$ 400
Unamortized premiums, discounts and debt issuance costs	$ 1
Senior Notes Maturing April 2025 [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.25%	4.25%
Principal outstanding | €		€ 300
Unamortized premiums, discounts and debt issuance costs	$ 2
Senior Notes Maturing February 2029 [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.50%	4.50%
Principal outstanding	$ 750
Unamortized premiums, discounts and debt issuance costs	$ 13

Note 15 - Debt - Notes Outsta_2

Note 15 - Debt - Notes Outstanding (Details) (Parentheticals) € in Millions, $ in Millions	Dec. 31, 2020USD ($)	Dec. 31, 2020EUR (€)	Dec. 31, 2019USD ($)
Carrying amount of debt	$ 2,121		$ 2,389
Huntsman International LLC [Member]
Carrying amount of debt	2,121		$ 2,769
Huntsman International LLC [Member] | Senior Notes Maturing April 2021 [Member]
Carrying amount of debt	545	€ 445
Huntsman International LLC [Member] | Senior Notes Maturing November 2022 [Member]
Carrying amount of debt	399
Huntsman International LLC [Member] | Senior Notes Maturing April 2025 [Member]
Carrying amount of debt	366	€ 298
Huntsman International LLC [Member] | Senior Notes Maturing February 2029 [Member]
Carrying amount of debt	$ 750

Note 15 - Debt - Scheduled Matu

Note 15 - Debt - Scheduled Maturities of Debt (Details) $ in Millions	Dec. 31, 2020USD ($)
2021	$ 593
2022	403
2023	1
2024	2
2025	369
Thereafter	753
Total Debt, Excluding Debt to Affiliates	$ 2,121

Note 16 - Derivative Instrume_2

Note 16 - Derivative Instruments and Hedging Activities (Details Textual) € in Millions, $ in Millions	Jan. 09, 2019USD ($)	Nov. 30, 2019USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2020EUR (€)
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax			$ 66	$ 14	$ 35
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative, Term of Contract (Year)	6 years
Derivative, Notional Amount	$ 17
Derivative, Fixed Interest Rate	2.66%
Derivative, Payment to Counterparties		$ 1
Foreign Exchange Contract [Member]
Derivative, Notional Amount			$ 145	$ 135
Derivative, Maximum Maturity Period (Month)			3 months
Derivative Instruments, Approximate Term of Foreign Currency Contracts (Month)			1 month
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount			$ 641			€ 523

Note 17 - Fair Value (Details T

Note 17 - Fair Value (Details Textual) Pure in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Number of Instruments Categorized as Level Three	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	$ 0	$ 0

Note 17 - Fair Value - Fair Val

Note 17 - Fair Value - Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred Compensation Plan Assets	$ 44	$ 39
Reported Value Measurement [Member]
Deferred Compensation Plan Assets	26	28
Option agreement for remaining Venator shares	11	0
Long-term debt (including current portion)	(2,121)	(2,389)
Estimate of Fair Value Measurement [Member]
Deferred Compensation Plan Assets	26	28
Option agreement for remaining Venator shares	11	0
Long-term debt (including current portion)	$ (2,334)	$ (2,544)

Note 18 - Revenue Recognition -

Note 18 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Total revenues	[1]	$ 6,018	$ 6,797	$ 7,604
MDI Urethanes [Member]
Total revenues		3,584	3,911	4,282
Differentiated [Member]
Total revenues		1,023	1,158	1,301
Specialty [Member]
Total revenues		746	891	932
Non-specialty [Member]
Total revenues		93	153	184
Textile Chemicals and Dyes [Member]
Total revenues		597	763	824
Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	3,584	3,911	4,282
Operating Segments [Member] | Polyurethanes [Member] | MDI Urethanes [Member]
Total revenues		3,584	3,911	4,282
Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	1,023	1,158	1,301
Operating Segments [Member] | Performance Products [Member] | Differentiated [Member]
Total revenues		1,023	1,158	1,301
Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	839	1,044	1,116
Operating Segments [Member] | Advanced Materials [Member] | Specialty [Member]
Total revenues		746	891	932
Operating Segments [Member] | Advanced Materials [Member] | Non-specialty [Member]
Total revenues		93	153	184
Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	597	763	824
Operating Segments [Member] | Textile Effects [Member] | Textile Chemicals and Dyes [Member]
Total revenues		597	763	824
Segment Reconciling Items [Member]
Total revenues	[1]	(25)	(79)	81
Intersegment Eliminations [Member]
Total revenues		(25)	(79)	81
U.S. and Canada [Member]
Total revenues	[1]	2,051	2,293	2,487
U.S. and Canada [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	1,362	1,475	1,426
U.S. and Canada [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	447	531	586
U.S. and Canada [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	217	289	285
U.S. and Canada [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	48	62	68
U.S. and Canada [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	(23)	(64)	122
Europe [Member]
Total revenues	[1]	1,629	1,896	2,209
Europe [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	961	1,051	1,277
Europe [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	252	316	368
Europe [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	319	410	445
Europe [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	98	128	135
Europe [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	(1)	(9)	(16)
Asia Pacific [Member]
Total revenues	[1]	1,841	2,039	2,276
Asia Pacific [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	997	1,078	1,236
Asia Pacific [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	260	248	278
Asia Pacific [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	224	269	301
Asia Pacific [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	360	446	485
Asia Pacific [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	0	(2)	(24)
Rest of World [Member]
Total revenues	[1]	497	569	632
Rest of World [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	264	307	343
Rest of World [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	64	63	69
Rest of World [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	79	76	85
Rest of World [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	91	127	136
Rest of World [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	$ (1)	$ (4)	$ (1)
[1]	Geographic information for revenues is based upon countries into which product is sold.

Note 19 - Employee Benefit Pl_3

Note 19 - Employee Benefit Plans (Details Textual) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	May 05, 2016shares
Deferred Compensation Arrangement with Individual, Percentage of Salary, Maximum Defer	75.00%
Deferred Compensation Plan Assets	$ 44	$ 39
Deferred Compensation Arrangement, Compensation Expense	$ 1	1	$ 1
Huntsman Corporation 2016 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) | shares				8,200
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) | shares	7,000
Huntsman Corporation Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) | shares				0
UNITED STATES
Defined Contribution Plan, Cost	$ 17	17	16
Foreign Plan [Member]
Defined Contribution Plan, Cost	$ 3	4	4
Money Purchase Pension Plan [Member] | UNITED STATES
Defined Contribution Plan, Employer Non-discretionary Contribution, Percent	8.00%
Huntsman UK Pension Plan [Member] | UNITED KINGDOM
Transition Period for Defined Contributions (Year)	5 years
Maximum [Member] | Salary Deferral Plan for New Hires [Member] | UNITED STATES
Defined Contribution Plan, Employer Non-discretionary Contribution, Percent	6.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Defined Contribution Plan, Employer Contribution, Percent of Employees' Gross Pay	10.00%
Maximum [Member] | Salary Deferral Plan [Member] | UNITED STATES
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Maximum [Member] | Huntsman UK Pension Plan [Member] | UNITED KINGDOM
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	15.00%
Maximum [Member] | Huntsman UK Pension Plan, New Hires [Member] | UNITED KINGDOM
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	12.00%
Pension Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 3,100	2,800
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate and Other [Member]
Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3	11	0
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	138	124	121
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 866	$ 790	$ 697
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.52%	7.52%	7.52%
Pension Plan [Member] | UNITED STATES | Real Estate and Other [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 62	$ 67
Pension Plan [Member] | UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	62	67
Pension Plan [Member] | UNITED STATES | Fair Value, Inputs, Level 3 [Member] | Real Estate and Other [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	62	67
Pension Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 2,225	$ 1,960	$ 1,751
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	5.89%	5.89%	5.88%
Pension Plan [Member] | Foreign Plan [Member] | Real Estate and Other [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 628	$ 505
Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	76	57
Pension Plan [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Real Estate and Other [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 76	57
Pension Plan [Member] | Minimum [Member]
Defined Benefit Plan, Cash Balance, Plan Annual Pay Credits, Percentage of Eligible Pay	6.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	5.68%
Pension Plan [Member] | Maximum [Member]
Defined Benefit Plan, Cash Balance, Plan Annual Pay Credits, Percentage of Eligible Pay	12.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.53%
Other Postretirement Benefits Plan [Member]
Number Of Fully Insured Medicare Part D Plans	2
Other Postretirement Benefits Plan [Member] | UNITED STATES
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 0	0	$ 0
Other Postretirement Benefits Plan [Member] | Foreign Plan [Member]
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	$ 0	$ 0	$ 0

Note 19 - Employee Benefit Pl_4

Note 19 - Employee Benefit Plans - Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Balance at beginning of period	$ 2,800
Balance at end of period	3,100	$ 2,800
Funded status
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	2,800	2,800		$ 3,100	$ 2,800
UNITED STATES | Pension Plan [Member]
Benefit obligation at beginning of year	1,024	956
Service cost	21	20	$ 23
Interest cost	37	41	39
Participant contributions	0	0
Plan amendments	0	0
Foreign currency exchange rate changes	0	0
Settlements/curtailments/divestitures	(2)	20
Actuarial (gain) loss	87	65
Benefits paid	(76)	(78)
Benefit obligation at end of year	1,091	1,024	956
Balance at beginning of period	790	697
Actual return on plan assets	99	107
Foreign currency exchange rate changes	0	0
Settlement/transfers/divestitures	(1)	19
Company contributions	54	45
Benefits paid	(76)	(78)
Balance at end of period	866	790	697
Funded status
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	866	697	697	866	790
Benefit obligation	1,091	956	956	1,091	1,024
Accrued benefit cost				(225)	(234)
Amounts recognized in balance sheet:
Noncurrent asset				0	0
Current liability				(5)	(5)
Noncurrent liability				(220)	(229)
Total				(225)	(234)
UNITED STATES | Other Postretirement Benefits Plan [Member]
Benefit obligation at beginning of year	60	59
Service cost	1	1	2
Interest cost	2	3	2
Participant contributions	2	2
Plan amendments	0	0
Foreign currency exchange rate changes	0	0
Settlements/curtailments/divestitures	0	1
Actuarial (gain) loss	9	0
Benefits paid	(9)	(6)
Benefit obligation at end of year	65	60	59
Balance at beginning of period	0	0
Actual return on plan assets	0	0
Foreign currency exchange rate changes	0	0
Settlement/transfers/divestitures	0	0
Company contributions	7	4
Benefits paid	(9)	(6)
Balance at end of period	0	0	0
Funded status
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0	0	0	0
Benefit obligation	65	59	59	65	60
Accrued benefit cost				(65)	(60)
Amounts recognized in balance sheet:
Noncurrent asset				0	0
Current liability				(6)	(5)
Noncurrent liability				(59)	(55)
Total				(65)	(60)
Foreign Plan [Member] | Pension Plan [Member]
Benefit obligation at beginning of year	2,377	2,157
Service cost	31	30	32
Interest cost	25	37	37
Participant contributions	6	6
Plan amendments	0	(9)
Foreign currency exchange rate changes	200	7
Settlements/curtailments/divestitures	(10)	(2)
Actuarial (gain) loss	116	224
Benefits paid	(74)	(73)
Benefit obligation at end of year	2,671	2,377	2,157
Balance at beginning of period	1,960	1,751
Actual return on plan assets	143	224
Foreign currency exchange rate changes	161	11
Settlement/transfers/divestitures	(11)	(2)
Company contributions	40	43
Benefits paid	(74)	(73)
Balance at end of period	2,225	1,960	1,751
Funded status
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	2,225	1,751	1,751	2,225	1,960
Benefit obligation	2,671	2,157	2,157	2,671	2,377
Accrued benefit cost				(446)	(417)
Amounts recognized in balance sheet:
Noncurrent asset				20	10
Current liability				(6)	(6)
Noncurrent liability				(460)	(421)
Total				(446)	(417)
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Benefit obligation at beginning of year	0	0
Service cost	0	0	0
Interest cost	0	0	0
Participant contributions	0	0
Plan amendments	0	0
Foreign currency exchange rate changes	0	0
Settlements/curtailments/divestitures	0	0
Actuarial (gain) loss	0	0
Benefits paid	0	0
Benefit obligation at end of year	0	0	0
Balance at beginning of period	0	0
Actual return on plan assets	0	0
Foreign currency exchange rate changes	0	0
Settlement/transfers/divestitures	0	0
Company contributions	0	0
Benefits paid	0	0
Balance at end of period	0	0	0
Funded status
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0	0	0	0
Benefit obligation	$ 0	$ 0	$ 0	0	0
Accrued benefit cost				0	0
Amounts recognized in balance sheet:
Noncurrent asset				0	0
Current liability				0	0
Noncurrent liability				0	0
Total				$ 0	$ 0

Note 19 - Employee Benefit Pl_5

Note 19 - Employee Benefit Plans - Amounts Recognized and Amounts Expected to Be Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
UNITED STATES | Pension Plan [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	$ 363	$ 394
Prior service credit	(9)	(11)
Total	354	383
UNITED STATES | Pension Plan [Member] | Huntsman International LLC [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	363	395
Prior service credit	(9)	(11)
Total	354	384
UNITED STATES | Other Postretirement Benefits Plan [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	26	20
Prior service credit	(25)	(33)
Total	1	(13)
UNITED STATES | Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	26	20
Prior service credit	(25)	(33)
Total	1	(13)
Foreign Plan [Member] | Pension Plan [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	874	840
Prior service credit	(27)	(32)
Total	847	808
Foreign Plan [Member] | Pension Plan [Member] | Huntsman International LLC [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	877	846
Prior service credit	(27)	(31)
Total	850	815
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	0	0
Prior service credit	0	0
Total	0	0
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	0	0
Prior service credit	0	0
Total	$ 0	$ 0

Note 19 - Employee Benefit Pl_6

Note 19 - Employee Benefit Plans - Components of Net Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Amortization of actuarial loss	$ 76	$ 66	$ 67
Huntsman International LLC [Member]
Amortization of actuarial loss	79	70	71
UNITED STATES | Pension Plan [Member]
Service cost	21	20	23
Interest cost	37	41	39
Expected return on plan assets	(59)	(53)	(54)
Amortization of prior service credit	(2)	(2)	(2)
Amortization of actuarial loss	28	23	31
Settlement loss	0	0	2
Net periodic benefit cost (credit)	25	29	39
UNITED STATES | Pension Plan [Member] | Huntsman International LLC [Member]
Service cost	21	20	23
Interest cost	37	41	39
Expected return on plan assets	(59)	(53)	(54)
Amortization of prior service credit	(2)	(2)	(2)
Amortization of actuarial loss	28	23	31
Settlement loss	0	0	2
Net periodic benefit cost (credit)	25	29	39
UNITED STATES | Other Postretirement Benefits Plan [Member]
Service cost	1	1	2
Interest cost	2	3	2
Amortization of prior service credit	(5)	(5)	(5)
Amortization of actuarial loss	1	1	2
Net periodic benefit cost (credit)	(1)	0	1
UNITED STATES | Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]
Service cost	1	1	2
Interest cost	2	3	2
Amortization of prior service credit	(5)	(5)	(5)
Amortization of actuarial loss	1	1	2
Net periodic benefit cost (credit)	(1)	0	1
Foreign Plan [Member] | Pension Plan [Member]
Service cost	31	30	32
Interest cost	25	37	37
Expected return on plan assets	(114)	(102)	(109)
Amortization of prior service credit	(5)	(4)	(5)
Amortization of actuarial loss	53	45	38
Settlement loss	0	1	0
Net periodic benefit cost (credit)	(10)	7	(7)
Foreign Plan [Member] | Pension Plan [Member] | Huntsman International LLC [Member]
Service cost	31	30	32
Interest cost	25	37	37
Expected return on plan assets	(114)	(102)	(109)
Amortization of prior service credit	(5)	(4)	(5)
Amortization of actuarial loss	57	48	41
Settlement loss	0	1	0
Net periodic benefit cost (credit)	(6)	10	(4)
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Service cost	0	0	0
Interest cost	0	0	0
Amortization of prior service credit	0	0	0
Amortization of actuarial loss	0	0	0
Net periodic benefit cost (credit)	0	0	0
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]
Service cost	0	0	0
Interest cost	0	0	0
Amortization of prior service credit	0	0	0
Amortization of actuarial loss	0	0	0
Net periodic benefit cost (credit)	$ 0	$ 0	$ 0

Note 19 - Employee Benefit Pl_7

Note 19 - Employee Benefit Plans - Periodic Benefit Cost and Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Plan [Member] | UNITED STATES
Current year actuarial loss	$ 40	$ 19	$ 18
Amortization of actuarial loss	(28)	(26)	(34)
Current year prior service (credits) cost	0	0	0
Amortization of prior service credit	2	2	2
Settlements	(42)	0	(2)
Total recognized in other comprehensive income (loss)	(28)	(5)	(16)
Amounts related to discontinued operations	17	9	(4)
Total recognized in other comprehensive income (loss) in continuing operations	(11)	4	(20)
Net periodic benefit cost	25	29	39
Total recognized in net periodic benefit cost and other comprehensive income (loss)	14	33	19
Pension Plan [Member] | UNITED STATES | Huntsman International LLC [Member]
Current year actuarial loss	40	19	18
Amortization of actuarial loss	(28)	(26)	(34)
Current year prior service (credits) cost	0	0	0
Amortization of prior service credit	2	2	2
Settlements	(42)	0	(2)
Total recognized in other comprehensive income (loss)	(28)	(5)	(16)
Amounts related to discontinued operations	17	9	(4)
Total recognized in other comprehensive income (loss) in continuing operations	(11)	4	(20)
Net periodic benefit cost	25	29	39
Total recognized in net periodic benefit cost and other comprehensive income (loss)	14	33	19
Curtailment (gain) loss	0	0	0
Pension Plan [Member] | Foreign Plan [Member]
Current year actuarial loss	87	101	117
Amortization of actuarial loss	(53)	(45)	(38)
Current year prior service (credits) cost	0	(10)	4
Amortization of prior service credit	5	4	5
Settlements	0	1	0
Total recognized in other comprehensive income (loss)	39	51	88
Amounts related to discontinued operations	0	0	0
Total recognized in other comprehensive income (loss) in continuing operations	39	51	88
Net periodic benefit cost	(10)	7	(7)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	29	58	81
Pension Plan [Member] | Foreign Plan [Member] | Huntsman International LLC [Member]
Current year actuarial loss	87	101	117
Amortization of actuarial loss	(57)	(48)	(41)
Current year prior service (credits) cost	0	(10)	4
Amortization of prior service credit	5	4	5
Settlements	0	1	0
Total recognized in other comprehensive income (loss)	35	48	85
Amounts related to discontinued operations	0	0	0
Total recognized in other comprehensive income (loss) in continuing operations	35	48	85
Net periodic benefit cost	(6)	10	(4)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	29	58	81
Curtailment (gain) loss	0	0	0
Other Postretirement Benefits Plan [Member] | UNITED STATES
Current year actuarial loss	9	0	(10)
Amortization of actuarial loss	(1)	(1)	(2)
Current year prior service (credits) cost	0	0	0
Amortization of prior service credit	5	5	6
Settlements	(1)	0	0
Total recognized in other comprehensive income (loss)	14	4	(6)
Amounts related to discontinued operations	0	(6)	0
Total recognized in other comprehensive income (loss) in continuing operations	14	(2)	(6)
Net periodic benefit cost	(1)	0	1
Total recognized in net periodic benefit cost and other comprehensive income (loss)	13	(2)	(5)
Curtailment (gain) loss	2	0	0
Other Postretirement Benefits Plan [Member] | UNITED STATES | Huntsman International LLC [Member]
Current year actuarial loss	9	0	(10)
Amortization of actuarial loss	(1)	(1)	(2)
Current year prior service (credits) cost	0	0	0
Amortization of prior service credit	5	5	6
Settlements	(1)	0	0
Total recognized in other comprehensive income (loss)	14	4	(6)
Amounts related to discontinued operations	0	(6)	0
Total recognized in other comprehensive income (loss) in continuing operations	14	(2)	(6)
Net periodic benefit cost	(1)	0	1
Total recognized in net periodic benefit cost and other comprehensive income (loss)	13	(2)	(5)
Curtailment (gain) loss	2	0	0
Other Postretirement Benefits Plan [Member] | Foreign Plan [Member]
Current year actuarial loss	0	0	0
Amortization of actuarial loss	0	0	0
Current year prior service (credits) cost	0	0	0
Amortization of prior service credit	0	0	0
Settlements	0	0	0
Total recognized in other comprehensive income (loss)	0	0	0
Amounts related to discontinued operations	0	0	0
Total recognized in other comprehensive income (loss) in continuing operations	0	0	0
Net periodic benefit cost	0	0	0
Total recognized in net periodic benefit cost and other comprehensive income (loss)	0	0	0
Curtailment (gain) loss	0	0	0
Other Postretirement Benefits Plan [Member] | Foreign Plan [Member] | Huntsman International LLC [Member]
Current year actuarial loss	0	0	0
Amortization of actuarial loss	0	0	0
Current year prior service (credits) cost	0	0	0
Amortization of prior service credit	0	0	0
Settlements	0	0	0
Total recognized in other comprehensive income (loss)	0	0	0
Amounts related to discontinued operations	0	0	0
Total recognized in other comprehensive income (loss) in continuing operations	0	0	0
Net periodic benefit cost	0	0	0
Total recognized in net periodic benefit cost and other comprehensive income (loss)	0	0	0
Curtailment (gain) loss	$ 0	$ 0	$ 0

Note 19 - Employee Benefit Pl_8

Note 19 - Employee Benefit Plans - Weighted-average Assumptions Used to Determine the Projected Benefit Obligation (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
UNITED STATES | Pension Plan [Member]
Projected benefit obligation
Discount rate	2.82%	3.59%	4.39%
Rate of compensation increase	4.09%	4.09%	4.10%
Interest credit rate	5.15%	5.15%	5.15%
Net periodic pension cost
Discount rate	3.59%	4.39%	3.74%
Rate of compensation increase	4.09%	4.07%	4.10%
Expected return on plan assets	7.52%	7.52%	7.52%
Interest credit rate	5.15%	5.15%	5.15%
UNITED STATES | Other Postretirement Benefits Plan [Member]
Projected benefit obligation
Discount rate	2.63%	3.46%	4.26%
Net periodic pension cost
Discount rate	3.46%	4.26%	3.58%
Foreign Plan [Member] | Pension Plan [Member]
Projected benefit obligation
Discount rate	0.69%	1.07%	1.75%
Rate of compensation increase	2.59%	2.65%	2.95%
Interest credit rate	0.33%	0.49%	1.04%
Net periodic pension cost
Discount rate	1.07%	1.75%	1.65%
Rate of compensation increase	2.65%	2.64%	3.38%
Expected return on plan assets	5.89%	5.89%	5.88%
Interest credit rate	0.49%	1.04%	0.88%
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Projected benefit obligation
Discount rate	2.30%	2.90%	3.50%
Net periodic pension cost
Discount rate	2.90%	3.50%	3.30%

Note 19 - Employee Benefit Pl_9

Note 19 - Employee Benefit Plans - Projected Benefit Obligations in Excess of Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
UNITED STATES
Projected benefit obligation in excess of plan assets
Projected benefit obligation	$ 1,091	$ 1,024
Fair value of plan assets	866	790
Foreign Plan [Member]
Projected benefit obligation in excess of plan assets
Projected benefit obligation	2,017	2,203
Fair value of plan assets	$ 1,551	$ 1,777

Note 19 - Employee Benefit P_10

Note 19 - Employee Benefit Plans - Projected Benefit Obligation, Accumulated Benefit Obligation and Fair Value of Plan Assets for Defined Benefit Plans (Details) - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
UNITED STATES
Accumulated benefit obligation in excess of plan assets
Projected benefit obligation	$ 1,091	$ 1,024
Accumulated benefit obligation	1,073	1,019
Fair value of plan assets	866	790
Foreign Plan [Member]
Accumulated benefit obligation in excess of plan assets
Projected benefit obligation	1,203	1,066
Accumulated benefit obligation	1,116	991
Fair value of plan assets	$ 746	$ 664

Note 19 - Employee Benefit P_11

Note 19 - Employee Benefit Plans - Expected Future Contributions and Benefit Payments Related to Continuing Operations (Details) $ in Millions	Dec. 31, 2020USD ($)
UNITED STATES | Pension Plan [Member]
2021 expected employer contributions
To plan trusts	$ 14
Expected benefit payments
2021	59
2022	65
2023	70
2024	66
2025	100
2026 - 2030	316
UNITED STATES | Other Postretirement Benefits Plan [Member]
2021 expected employer contributions
To plan trusts	6
Expected benefit payments
2021	6
2022	6
2023	5
2024	5
2025	5
2026 - 2030	24
Foreign Plan [Member] | Pension Plan [Member]
2021 expected employer contributions
To plan trusts	40
Expected benefit payments
2021	86
2022	87
2023	92
2024	90
2025	92
2026 - 2030	493
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
2021 expected employer contributions
To plan trusts	0
Expected benefit payments
2021	0
2022	0
2023	0
2024	0
2025	0
2026 - 2030	$ 0

Note 19 - Employee Benefit P_12

Note 19 - Employee Benefit Plans - Fair Value of Recurring Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair value of plan assets	$ 3,100	$ 2,800
Real Estate and Other [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	138	124	$ 121
UNITED STATES
Fair value of plan assets	866	790	697
UNITED STATES | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	557	503
UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	247	220
UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	62	67
UNITED STATES | Defined Benefit Plan, Equity Securities [Member]
Fair value of plan assets	481	422
UNITED STATES | Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	315	283
UNITED STATES | Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	166	139
UNITED STATES | Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	0	0
UNITED STATES | Fixed Income Funds [Member]
Fair value of plan assets	323	301
UNITED STATES | Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	242	220
UNITED STATES | Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	81	81
UNITED STATES | Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	0	0
UNITED STATES | Real Estate and Other [Member]
Fair value of plan assets	62	67
UNITED STATES | Real Estate and Other [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	0	0
UNITED STATES | Real Estate and Other [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	0	0
UNITED STATES | Real Estate and Other [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	62	67
UNITED STATES | Defined Benefit Plan, Cash [Member]
Fair value of plan assets	0	0
UNITED STATES | Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	0	0
UNITED STATES | Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	0	0
UNITED STATES | Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	0	0
Foreign Plan [Member]
Fair value of plan assets	2,225	1,960	$ 1,751
Foreign Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	991	959
Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	1,158	944
Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	76	57
Foreign Plan [Member] | Defined Benefit Plan, Equity Securities [Member]
Fair value of plan assets	564	535
Foreign Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	229	228
Foreign Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	335	307
Foreign Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	0	0
Foreign Plan [Member] | Fixed Income Funds [Member]
Fair value of plan assets	971	847
Foreign Plan [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	610	560
Foreign Plan [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	361	287
Foreign Plan [Member] | Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	0	0
Foreign Plan [Member] | Real Estate and Other [Member]
Fair value of plan assets	628	505
Foreign Plan [Member] | Real Estate and Other [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	93	99
Foreign Plan [Member] | Real Estate and Other [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	459	349
Foreign Plan [Member] | Real Estate and Other [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	76	57
Foreign Plan [Member] | Defined Benefit Plan, Cash [Member]
Fair value of plan assets	62	73
Foreign Plan [Member] | Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	59	72
Foreign Plan [Member] | Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	3	1
Foreign Plan [Member] | Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	$ 0	$ 0

Note 19 - Employee Benefit P_13

Note 19 - Employee Benefit Plans - Reconciliation of Balances at Fair Value Using Unobservable Inputs (Details) - Pension Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance at beginning of period	$ 2,800
Balance at end of period	3,100	$ 2,800
Real Estate and Other [Member] | Fair Value, Inputs, Level 3 [Member]
Balance at beginning of period	124	121
Return on pension plan assets	5	4
Purchases, sales and settlements	(2)	(1)
Transfers into (out of) Level 3	11	0
Balance at end of period	$ 138	$ 124

Note 19 - Employee Benefit P_14

Note 19 - Employee Benefit Plans - Asset Allocation (Details) - Pension Plan [Member]	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
UNITED STATES
Allocation		100.00%	100.00%
UNITED STATES | Defined Benefit Plan, Equity Securities [Member]
Allocation		56.00%	54.00%
UNITED STATES | Fixed Income Funds [Member]
Allocation		37.00%	38.00%
UNITED STATES | Real Estate and Other [Member]
Allocation		7.00%	8.00%
UNITED STATES | Defined Benefit Plan, Cash [Member]
Allocation		0.00%	0.00%
Foreign Plan [Member]
Allocation		100.00%	100.00%
Foreign Plan [Member] | Defined Benefit Plan, Equity Securities [Member]
Allocation		25.00%	27.00%
Foreign Plan [Member] | Fixed Income Funds [Member]
Allocation		44.00%	43.00%
Foreign Plan [Member] | Real Estate and Other [Member]
Allocation		28.00%	26.00%
Foreign Plan [Member] | Defined Benefit Plan, Cash [Member]
Allocation		3.00%	4.00%
Forecast [Member] | UNITED STATES
Target allocation	100.00%
Forecast [Member] | UNITED STATES | Defined Benefit Plan, Equity Securities [Member]
Target allocation	54.00%
Forecast [Member] | UNITED STATES | Fixed Income Funds [Member]
Target allocation	39.00%
Forecast [Member] | UNITED STATES | Real Estate and Other [Member]
Target allocation	4.00%
Forecast [Member] | UNITED STATES | Defined Benefit Plan, Cash [Member]
Target allocation	3.00%
Forecast [Member] | Foreign Plan [Member]
Target allocation	100.00%
Forecast [Member] | Foreign Plan [Member] | Defined Benefit Plan, Equity Securities [Member]
Target allocation	26.00%
Forecast [Member] | Foreign Plan [Member] | Fixed Income Funds [Member]
Target allocation	48.00%
Forecast [Member] | Foreign Plan [Member] | Real Estate and Other [Member]
Target allocation	14.00%
Forecast [Member] | Foreign Plan [Member] | Defined Benefit Plan, Cash [Member]
Target allocation	12.00%

Note 20 - Income Taxes (Details

Note 20 - Income Taxes (Details Textual) - USD ($) $ in Thousands, shares in Millions	Dec. 23, 2020	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount				$ 16,000	$ 9,000	$ 27,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				21.00%	21.00%	21.00%	35.00%
Income Tax Reconciliation, Unrealized Currency Exchange Gains and Losses				$ 0	$ (5,000)	$ (10,000)
Deferred Tax Assets, Basis Difference in Investment				35,000	199,000
Income Tax Expense (Benefit) from GILTI Expense Allocations				7,000	7,000	16,000
Tax Cuts and Jobs Act, Income Tax Expense (Benefit), Total						32,000
Effective Income Tax Rate Reconciliation, Sale of Foreign Business, Amount				(35,000)	0
Deferred Tax Assets, Operating Loss Carryforwards, Total				258,000	281,000
Deferred Tax Assets, Capital Loss Carryforwards				30,000	11,000
Release of Valuation Allowances in Various Jurisdictions				0	0	132,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate				16,000	15,000
Unrecognized Tax Benefits, Period Increase (Decrease), Total				$ 1,000	(10,000)	$ 5,000
Unrecognized Tax Benefits That Would Impact Income Tax Expense (Benefit) Period (Month)				12 months
Income Tax, GILTI Blended Tax Rate				13.125%
Minimum [Member]
Decrease in Unrecognized Tax Benefits is Reasonably Possible				$ 0
Maximum [Member]
Decrease in Unrecognized Tax Benefits is Reasonably Possible				2,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards, Total				1,037,000
Deferred Tax Assets, Operating Loss Carryforwards, Total				240,000
Operating Loss Carryforwards, Subject to Expiration				119,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration				20,000
Operating Loss Carryforwards, Subject to Expiration and Valuation Allowance				60,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration and Valuation Allowance				9,000
Foreign Tax Authority [Member] | Tax Year 2021 Expiration [Member]
Operating Loss Carryforwards, Subject to Expiration				57,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration				8,000
Foreign Tax Authority [Member] | Tax Year 2020 Expiration [Member]
Operating Loss Carryforwards, Subject to Expiration and Valuation Allowance				107,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration and Valuation Allowance				17,000
Foreign Tax Authority [Member] | Tax Year 2019 Expiration [Member]
Operating Loss Carryforwards, Subject to Expiration and Valuation Allowance					111,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration and Valuation Allowance					16,000
Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member]
Noncash Tax Expense, Change in Tax Rate					32,000
Release of Valuation Allowances in Various Jurisdictions			$ 80,000
Period Carryover of Net Operating Losses (Year)						7 years
Foreign Tax Authority [Member] | Luxembourg Inland Revenue [Member]
Operating Loss Carryforwards, Total				472,000
Deferred Tax Assets, Operating Loss Carryforwards, Total				118,000
Operating Loss Carryforwards, Valuation Allowance, Total				63,000
Release of Valuation Allowances in Various Jurisdictions		$ 24,000
Foreign Tax Authority [Member] | Her Majesty's Revenue and Customs (HMRC) [Member]
Release of Valuation Allowances in Various Jurisdictions			$ 15,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards, Total				71,000
Deferred Tax Assets, Operating Loss Carryforwards, Total				15,000
Deferred Tax Assets, Capital Loss Carryforwards				30,000
Venator Materials PLC [Member]
Deferred Tax Assets, Basis Difference in Investment				199,000	199,000
Unrealizable Built In Capital Loss, Valuation Allowance				46,000	46,000
Income Tax Benefit Realized, Portion of Deferred Tax Asset Basis Difference in Investment				153,000	153,000
Deferred Tax Assets, Capital Loss Carryforwards				18,000
Venator Materials PLC [Member] | AUSTRALIA
Operating Loss Carryforwards, Valuation Allowance, Total				$ 11,000
Venator Materials PLC [Member] | SK Capital Partners, LP [Member]
Equity Method Investment Using Fair Value Option, Number of Shares Sold (in shares)	42.4			42.4
Huntsman International LLC [Member]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount				$ 16,000	$ 9,000	$ 27,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				21.00%	21.00%	21.00%
Income Tax Reconciliation, Unrealized Currency Exchange Gains and Losses				$ 0	$ (5,000)	$ (10,000)
Deferred Tax Assets, Basis Difference in Investment				35,000	199,000
Effective Income Tax Rate Reconciliation, Sale of Foreign Business, Amount				(35,000)	0	0
Deferred Tax Assets, Operating Loss Carryforwards, Total				258,000	281,000
Deferred Tax Assets, Capital Loss Carryforwards				30,000	11,000
Release of Valuation Allowances in Various Jurisdictions				$ 0	$ 0	$ 132,000

Note 20 - Income Taxes - Compon

Note 20 - Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S.
Current	$ (216)	$ (17)	$ 57
Deferred	167	(181)	(30)
Non-U.S.
Current	90	71	153
Deferred	5	89	(135)
Total income tax expense (benefit)	46	(38)	45
Huntsman International LLC [Member]
U.S.
Current	(215)	(21)	57
Deferred	166	(179)	(34)
Non-U.S.
Current	90	70	153
Deferred	5	89	(135)
Total income tax expense (benefit)	$ 46	$ (41)	$ 41

Note 20 - Income Taxes - Income

Note 20 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income from continuing operations before income taxes	$ 337,000	$ 391,000	$ 734,000
Expected tax expense at U.S. statutory rate of 21%	71,000	82,000	154,000
Change resulting from:
State tax expense net of federal benefit	(4,000)	(3,000)	(1,000)
Non-U.S. tax rate differentials	16,000	9,000	27,000
Other non-U.S. tax effects, including nondeductible expenses and other withholding taxes	5,000	13,000	8,000
U.S. Tax Reform Act impact	0	(1,000)	32,000
Currency exchange gains/losses(net)	0	(5,000)	(10,000)
Venator investment basis difference and fair market value adjustments	0	(199,000)	18,000
Tax losses related to Venator investment	0	(18,000)	0
Non-U.S. income subject to U.S. tax not offset by U.S. foreign tax credits	7,000	7,000	16,000
Tax authority audits and dispute resolutions	1,000	(6,000)	5,000
Share-based compensation excess tax benefits	(1,000)	(4,000)	(14,000)
Change in valuation allowance	(14,000)	56,000	(185,000)
Deferred tax effects of non-U.S. tax rate changes	(2,000)	36,000	(2,000)
Impact of equity method investments	(10,000)	(13,000)	(14,000)
Sale of the India-based DIY business	(35,000)	0
Non-U.S. withholding tax on repatriated earnings, net of U.S. foreign tax credits	20,000	6,000	11,000
Other U.S. tax effects, including nondeductible expenses and other credits	(8,000)	2,000	0
Total income tax expense (benefit)	46,000	(38,000)	45,000
Income from continuing operations before income taxes	337,000	391,000	734,000
Expected tax expense at U.S. statutory rate of 21%	71,000	82,000	154,000
Huntsman International LLC [Member]
Income from continuing operations before income taxes	338,000	377,000	716,000
Expected tax expense at U.S. statutory rate of 21%	71,000	79,000	150,000
Change resulting from:
State tax expense net of federal benefit	(4,000)	(3,000)	(1,000)
Non-U.S. tax rate differentials	16,000	9,000	27,000
Other non-U.S. tax effects, including nondeductible expenses and other withholding taxes	5,000	13,000	8,000
U.S. Tax Reform Act impact	0	(1,000)	32,000
Currency exchange gains/losses(net)	0	(5,000)	(10,000)
Venator investment basis difference and fair market value adjustments	0	(199,000)	18,000
Tax losses related to Venator investment	0	(18,000)	0
Non-U.S. income subject to U.S. tax not offset by U.S. foreign tax credits	7,000	7,000	16,000
Tax authority audits and dispute resolutions	1,000	(6,000)	5,000
Share-based compensation excess tax benefits	(1,000)	(4,000)	(14,000)
Change in valuation allowance	(14,000)	56,000	(185,000)
Deferred tax effects of non-U.S. tax rate changes	(2,000)	36,000	(2,000)
Impact of equity method investments	(10,000)	(13,000)	(14,000)
Sale of the India-based DIY business	(35,000)	0	0
Non-U.S. withholding tax on repatriated earnings, net of U.S. foreign tax credits	20,000	6,000	11,000
Other U.S. tax effects, including nondeductible expenses and other credits	(8,000)	2,000	0
Total income tax expense (benefit)	46,000	(41,000)	41,000
Income from continuing operations before income taxes	338,000	377,000	716,000
Expected tax expense at U.S. statutory rate of 21%	$ 71,000	$ 79,000	$ 150,000

Note 20 - Income Taxes - Inco_2

Note 20 - Income Taxes - Income Tax Reconciliation (Details) (Parentheticals)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
U.S. income tax statutory rate	21.00%	21.00%	21.00%	35.00%
Huntsman International LLC [Member]
U.S. income tax statutory rate	21.00%	21.00%	21.00%

Note 20 - Income Taxes - Comp_2

Note 20 - Income Taxes - Components of Income (Loss) From Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S.	$ (231)	$ (106)	$ (38)
Non-U.S.	568	497	772
Income from continuing operations before income taxes	337	391	734
Huntsman International LLC [Member]
U.S.	(230)	(120)	(56)
Non-U.S.	568	497	772
Income from continuing operations before income taxes	$ 338	$ 377	$ 716

Note 20 - Income Taxes - Deferr

Note 20 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred income tax assets:
Deferred Tax Assets, Operating Loss Carryforwards, Total	$ 258	$ 281
Pension and other employee compensation	184	172
Property, plant and equipment	15	15
Intangible assets	52	56
Deferred Tax Assets, Basis Difference in Investment	35	199
Operating leases	111	98
Deferred Tax Assets, Capital Loss Carryforwards	30	11
Deferred interest	28	19
Other, net	44	42
Total	757	893
Deferred income tax liabilities:
Property, plant and equipment	(249)	(218)
Pension and other employee compensation	(4)	(1)
Intangible assets	(72)	(27)
Unrealized currency gains	(14)	(43)
Operating leases	(114)	(102)
Other, net	(22)	(8)
Total	(475)	(399)
Net deferred tax asset before valuation allowance	282	494
Valuation allowance—net operating losses and other	(206)	(231)
Net deferred tax asset	76	263
Non-current deferred tax asset	288	292
Non-current deferred tax liability	(212)	(29)
Net deferred tax asset	76	263
Huntsman International LLC [Member]
Deferred income tax assets:
Deferred Tax Assets, Operating Loss Carryforwards, Total	258	281
Pension and other employee compensation	184	172
Property, plant and equipment	15	15
Intangible assets	52	56
Deferred Tax Assets, Basis Difference in Investment	35	199
Operating leases	111	98
Deferred Tax Assets, Capital Loss Carryforwards	30	11
Deferred interest	28	19
Other, net	44	42
Total	757	893
Deferred income tax liabilities:
Property, plant and equipment	(249)	(218)
Pension and other employee compensation	(4)	(1)
Intangible assets	(72)	(27)
Unrealized currency gains	(14)	(43)
Operating leases	(114)	(102)
Other, net	(24)	(8)
Total	(477)	(399)
Net deferred tax asset before valuation allowance	280	494
Valuation allowance—net operating losses and other	(206)	(231)
Net deferred tax asset	74	263
Non-current deferred tax asset	288	292
Non-current deferred tax liability	(214)	(29)
Net deferred tax asset	$ 74	$ 263

Note 20 - Income Taxes - Summar

Note 20 - Income Taxes - Summary of Changes in the Deferred Tax Assets Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation allowance, beginning	$ 231	$ 215	$ 412
Valuation allowance, ending	206	231	215
Net decrease (increase)	25	(16)	197
Foreign currency movements	6	0	3
Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances	(17)	(40)	(15)
Change in valuation allowance per rate reconciliation	14	(56)	185
Components of change in valuation allowance affecting tax expense:
Pre-tax income and losses in jurisdictions with valuation allowances resulting in no tax expense or benefit	14	(133)	53
Releases of valuation allowances in various jurisdictions	0	0	132
Establishments of valuation allowances in various jurisdictions	0	77	0
Change in valuation allowance per rate reconciliation	14	(56)	185
Valuation allowance, beginning	231	215	412
Valuation allowance, ending	206	231	215
Net decrease (increase)	25	(16)	197
Foreign currency movements	6	0	3
Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances	(17)	(40)	(15)
Change in valuation allowance per rate reconciliation	14	(56)	185
Huntsman International LLC [Member]
Valuation allowance, beginning	231	215	412
Valuation allowance, ending	206	231	215
Net decrease (increase)	25	(16)	197
Foreign currency movements	6	0	3
Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances	(17)	(40)	(15)
Change in valuation allowance per rate reconciliation	14	(56)	185
Components of change in valuation allowance affecting tax expense:
Pre-tax income and losses in jurisdictions with valuation allowances resulting in no tax expense or benefit	14	(133)	53
Releases of valuation allowances in various jurisdictions	0	0	132
Establishments of valuation allowances in various jurisdictions	0	77	0
Change in valuation allowance per rate reconciliation	14	(56)	185
Valuation allowance, beginning	231	215	412
Valuation allowance, ending	206	231	215
Net decrease (increase)	25	(16)	197
Foreign currency movements	6	0	3
Decrease to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances	(17)	(40)	(15)
Change in valuation allowance per rate reconciliation	$ 14	$ (56)	$ 185

Note 20 - Income Taxes - Summ_2

Note 20 - Income Taxes - Summary of Changes in the Deferred Tax Assets Valuation Allowance (Details) (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Expense (benefit) as a result of pre-tax income and losses in jurisdictions with valuation allowances	$ 0	$ 0	$ 0
Huntsman International LLC [Member]
Expense (benefit) as a result of pre-tax income and losses in jurisdictions with valuation allowances	$ 0	$ 0	$ 0

Note 20 - Income Taxes - Reconc

Note 20 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Unrecognized tax benefits as of January 1	$ 28	$ 26
Gross increases and decreases—tax positions taken during a prior period	2	4
Gross increases and decreases—tax positions taken during the current period	1	1
Reductions resulting from the lapse of statutes of limitation	(2)	(4)
Foreign currency movements	(1)	1
Unrecognized tax benefits as of December 31	$ 16	$ 28

Note 20 - Income Taxes - Intere

Note 20 - Income Taxes - Interest and Penalties Accrued Related to Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest expense included in tax expense	$ 1	$ 2	$ 0
Penalties expense included in tax expense	0	2	$ 0
Accrued liability for interest	4	5
Accrued liability for penalties	$ 0	$ 2

Note 20 - Income Taxes - Tax Ye

Note 20 - Income Taxes - Tax Years Open to Examination (Details)	12 Months Ended
	Dec. 31, 2020
Foreign Tax Authority [Member] | Administration of the Treasury, Belgium [Member]
Income tax years subject to examination	2018 2019 2020
Foreign Tax Authority [Member] | State Administration of Taxation, China [Member]
Income tax years subject to examination	2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Foreign Tax Authority [Member] | Ministry of the Economy, Finance and Industry, France [Member]
Income tax years subject to examination	2018 2019 2020
Foreign Tax Authority [Member] | Federal Ministry of Finance, Germany [Member]
Income tax years subject to examination	2016 2017 2018 2019 2020
Foreign Tax Authority [Member] | Inland Revenue, Hong Kong [Member]
Income tax years subject to examination	2014 2015 2016 2017 2018 2019 2020
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]
Income tax years subject to examination	2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Foreign Tax Authority [Member] | Ministry of Economic Affairs and Finance, Italy [Member]
Income tax years subject to examination	2015 2016 2017 2018 2019
Foreign Tax Authority [Member] | National Tax Agency, Japan [Member]
Income tax years subject to examination	2017 2018 2019 2020
Foreign Tax Authority [Member] | Mexican Tax Authority [Member]
Income tax years subject to examination	2014 2015 2016 2017 2018 2019
Foreign Tax Authority [Member] | Tax Authority, Spain [Member]
Income tax years subject to examination	2013 2014 2015 2016 2017 2018 2019 2020
Foreign Tax Authority [Member] | Swiss Federal Tax Administration (FTA) [Member]
Income tax years subject to examination	2014 2015 2016 2017 2018 2019 2020
Foreign Tax Authority [Member] | Tax and Customs Administration, Netherlands [Member]
Income tax years subject to examination	2016 2017 2018 2019
Foreign Tax Authority [Member] | Revenue Department of the Ministry of Finance, Thailand [Member]
Income tax years subject to examination	2013 2014 2015 2016 2017 2018 2019
Foreign Tax Authority [Member] | Her Majesty's Revenue and Customs (HMRC) [Member]
Income tax years subject to examination	2017 2018 2019
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Income tax years subject to examination	2017 2018 2019

Note 21 - Commitments and Con_3

Note 21 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Unrecorded Unconditional Purchase Obligation, Minimum Contract Period (Year)	1 year
Unrecorded Unconditional Purchase Obligation, Purchases	$ 2,000	$ 1,000	$ 0

Note 21 - Commitments and Con_4

Note 21 - Commitments and Contingencies - Purchase Commitments and Operating Leases (Details) $ in Millions	Dec. 31, 2020USD ($)
2021	$ 1,413
2022	982
2023	818
2024	696
2025	648
Thereafter	1,924
Unrecorded Unconditional Purchase Obligation, Total	$ 6,481

Note 22 - Environmental, Heal_2

Note 22 - Environmental, Health and Safety Matters (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Environmental Costs Recognized, Capitalized in Period	$ 28	$ 42	$ 32
Accrual for Environmental Loss Contingencies, Ending Balance	4	4
Accrued Environmental Loss Contingencies, Current	1	1
Accrued Environmental Loss Contingencies, Noncurrent	$ 3	$ 3
Maximum Period for Payment of Remediation Liabilities (Year)	30 years
Site Contingency, Number of Former Facility or Third Party Sites with Claims Against Entity for Cleanup Liabilities	6

Note 23 - Huntsman Corporatio_3

Note 23 - Huntsman Corporation Stockholders' Equity (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 03, 2018	Feb. 07, 2018
Treasury Stock, Shares, Acquired (in shares)	5,364,519
Treasury Stock, Value, Acquired, Cost Method	$ 96	$ 96	$ 208	$ 277
Share Repurchase Program 2018 [Member]
Stock Repurchase Program, Authorized Amount					$ 950	$ 950
Share Repurchase Program 2015 [Member]
Stock Repurchase Program, Remaining Authorized Repurchase Amount					$ 50

Note 23 - Huntsman Corporatio_4

Note 23 - Huntsman Corporation Stockholders' Equity - Dividends on Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Per share payment amount (in dollars per share)	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625
Approximate amount paid	$ 35	$ 36	$ 36	$ 37	$ 35	$ 38	$ 38	$ 39	$ 144	$ 150	$ 156

Note 24 - Stock-based Compens_3

Note 24 - Stock-based Compensation Plan (Details Textual) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 05, 2016
Share-based Payment Arrangement, Expense, Tax Benefit	$ 4	$ 8	$ 18
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 8.25	$ 9.27	$ 15.20
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 9	$ 4	$ 78
Proceeds from Stock Options Exercised	3	2	17
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 7
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 9 months 18 days
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	$ 2	$ 1	$ 17
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.40%	2.50%	2.60%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	34.00%	34.60%	44.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.40%	2.50%	2.30%
Share Based Compensation Arrangement by Share Based Payment Award, Performance Period (Year)	3 years
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Target Shares Awards for Grant Number (in shares)	174,200
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Vested Above Target Number (in shares)	165,489
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Vested Above Target, Grant Date Fair Value (in dollars per share)	$ 26.99
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Vested Not Issued (in shares)	426,856
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	37,761
Nonvested Shares [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 23
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 9 months 18 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 24	$ 24	$ 24
The 2016 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	7,000,000			8,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
The 2016 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years

Note 24 - Stock-based Compens_4

Note 24 - Stock-based Compensation Plan - Compensation Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation cost	$ 27	$ 29	$ 27
Huntsman International LLC [Member]
Compensation cost	$ 26	$ 28	$ 26

Note 24 - Stock-based Compens_5

Note 24 - Stock-based Compensation Plan - Weighted Average of the Assumptions Utilized for Stock Options (Details) - Share-based Payment Arrangement, Option [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividend yield	3.00%	2.90%	1.60%
Expected volatility	53.10%	54.00%	55.20%
Risk-free interest rate	1.40%	2.50%	2.60%
Expected life of stock options granted during the period (in years) (Year)	5 years 10 months 24 days	5 years 10 months 24 days	5 years 10 months 24 days

Note 24 - Stock-based Compens_6

Note 24 - Stock-based Compensation Plan - Summary of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)$ / sharesshares
Outstanding, shares (in shares) | shares	5,025
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 19.08
Granted, shares (in shares) | shares	788
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 21.52
Exercised, shares (in shares) | shares	(829)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 12.81
Forfeited, shares (in shares) | shares	(169)
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	$ 24.28
Outstanding, shares (in shares) | shares	4,815
Outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 20.37
Outstanding, weighted average remaining contractual term (Year)	6 years
Outstanding, aggregate intrinsic value | $	$ 26
Exercisable, shares (in shares) | shares	3,371
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 19.23
Exercisable, weighted average remaining contractual term (Year)	4 years 10 months 24 days
Exercisable, aggregate intrinsic value | $	$ 22

Note 24 - Stock-based Compens_7

Note 24 - Stock-based Compensation Plan - Summary of the Status of Nonvested Shares (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Equity Awards [Member]
Nonvested, shares (in shares) | shares	1,640
Nonvested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 24.61
Granted, shares (in shares) | shares	848
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 21.92
Vested, shares (in shares) | shares	(577)	[1],[2]
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 25.15
Forfeited, shares (in shares) | shares	(44)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 26.44
Nonvested, shares (in shares) | shares	1,867
Nonvested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 23.18
Liability Awards [Member]
Nonvested, shares (in shares) | shares	427
Nonvested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 24.80
Granted, shares (in shares) | shares	238
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 21.53
Vested, shares (in shares) | shares	(218)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 24.64
Forfeited, shares (in shares) | shares	(36)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 23.71
Nonvested, shares (in shares) | shares	411
Nonvested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 23.08
[1]	A total of 174,200 performance share unit awards are reflected in the vested shares in this table, which represents the target number of performance share unit awards for this grant and were included in the balance at December 31, 2019. During the year ended December 31, 2020, an additional 165,489 performance share unit awards with a grant date fair value of $26.99 vested above the target in accordance the performance criteria of these awards.
[2]	As of December 31, 2020, a total of 426,856 restricted stock units were vested but not yet issued, of which 37,761 vested during 2020. These shares have not been reflected as vested shares in this table because, in accordance with the restricted stock unit agreements, shares of common stock are not issued for vested restricted stock units until termination of employment.

Note 25 - Other Comprehensive_3

Note 25 - Other Comprehensive (Loss) Income (Details Textual) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total		$ 56		$ 68		$ 71
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	0	[1]	0	[3]
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total		43		55		57
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[2]	0	[4]	0	[5]
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Total		153		148		135
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[7]	(111)	[2],[6]	(62)	[2],[8]	(77)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Total		178		174		161
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[7]	(115)	[2],[9]	(65)	[2],[10]	(80)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Discontinued Operations [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		5		7		22
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Discontinued Operations [Member] | Huntsman International LLC [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		$ 5		$ 7		$ 22
[1]	Amounts are net of tax of $56 and $68 as of December 31, 2020 and January 1, 2020, respectively.
[2]	See table below for details about these reclassifications.
[3]	Amounts are net of tax of $68 and $71 as of December 31, 2019 and January 1, 2019, respectively.
[4]	Amounts are net of tax of $43 and $55 as of December 31, 2020 and January 1, 2020, respectively.
[5]	Amounts are net of tax of $55 and $57 as of December 31, 2019 and January 1, 2019, respectively.
[6]	Amounts are net of tax of $157 and $148 as of December 31, 2020 and January 1, 2020, respectively.
[7]	Pension and other postretirement benefits amounts in parentheses indicate credits on our consolidated statements of operations.
[8]	Amounts are net of tax of $148 and $135 as of December 31, 2019 and January 1, 2019, respectively.
[9]	Amounts are net of tax of $178 and $174 as of December 31, 2020 and January 1, 2020, respectively.
[10]	Amounts are net of tax of $174 and $161 as of December 31, 2019 and January 1, 2019, respectively.

Note 25 - Other Comprehensive_4

Note 25 - Other Comprehensive (Loss) Income - Components and Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Balance		$ 2,824		$ 2,749		$ 3,371
Balance		3,673		2,824		2,749
Huntsman International LLC [Member]
Balance		2,772		2,488		2,834
Balance		3,725		2,772		2,488
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Balance	[2]	(369)	[1]	(371)
Other comprehensive income (loss) before reclassifications, gross		29	[1]	0	[2]
Tax benefit		12	[1]	2	[2]
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0	[1]	0	[2]
Tax expense		0	[1]	0	[2]
Net current-period other comprehensive income (loss)		41	[1]	2	[2]
Balance		(328)	[1]	(369)	[1],[2]	(371)	[2]
Acquisition of noncontrolling interest	[2]			0
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Balance	[5]	(374)	[4]	(376)
Other comprehensive income (loss) before reclassifications, gross		29	[4]	0	[5]
Tax benefit		12	[4]	2	[5]
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0	[4]	0	[5]
Tax expense		0	[4]	0	[5]
Net current-period other comprehensive income (loss)		41	[4]	2	[5]
Balance		(333)	[4]	(374)	[4],[5]	(376)	[5]
Acquisition of noncontrolling interest	[5]			0
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Balance	[6]	(1,031)	[7]	(994)
Other comprehensive income (loss) before reclassifications, gross		(135)	[7]	(112)	[6]
Tax benefit		30	[7]	25	[6]
Amounts reclassified from accumulated other comprehensive loss, gross	[8]	111	[3],[7]	62	[3],[6]	77
Tax expense	[8]	(25)	[7]	(12)	[6]	(13)
Net current-period other comprehensive income (loss)		(19)	[7]	(37)	[6]
Balance		(1,050)	[7]	(1,031)	[6],[7]	(994)	[6]
Acquisition of noncontrolling interest	[6]			0
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Balance	[9]	(1,012)	[10]	(977)
Other comprehensive income (loss) before reclassifications, gross		(135)	[10]	(113)	[9]
Tax benefit		30	[10]	25	[9]
Amounts reclassified from accumulated other comprehensive loss, gross	[8]	115	[3],[10]	65	[3],[9]	80
Tax expense	[8]	(26)	[10]	(12)	[9]	(14)
Net current-period other comprehensive income (loss)		(16)	[10]	(35)	[9]
Balance		(1,028)	[10]	(1,012)	[9],[10]	(977)	[9]
Acquisition of noncontrolling interest	[9]			0
Accumulated Other Comprehensive Income (Loss), Unconsolidated Affiliates Including Portion Attributable to Noncontrolling Interest [Member]
Balance		8		8
Other comprehensive income (loss) before reclassifications, gross		0		0
Tax benefit		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive income (loss)		0		0
Balance		8		8		8
Acquisition of noncontrolling interest				0
Accumulated Other Comprehensive Income (Loss), Unconsolidated Affiliates Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Balance		8		8
Other comprehensive income (loss) before reclassifications, gross		0		0
Tax benefit		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive income (loss)		0		0
Balance		8		8		8
Acquisition of noncontrolling interest				0
Accumulated Other Comprehensive Income, Other, Net, Including Portion Attributable to Noncontrolling Interest [Member]
Balance		4		5
Other comprehensive income (loss) before reclassifications, gross		0		(1)
Tax benefit		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive income (loss)		0		(1)
Balance		4		4		5
Acquisition of noncontrolling interest				0
Accumulated Other Comprehensive Income, Other, Net, Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Balance		0		1
Other comprehensive income (loss) before reclassifications, gross		0		(1)
Tax benefit		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive income (loss)		0		(1)
Balance		0		0		1
Acquisition of noncontrolling interest				0
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Balance		(1,388)		(1,352)
Other comprehensive income (loss) before reclassifications, gross		(106)		(113)
Tax benefit		42		27
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	111		62
Tax expense		(25)		(12)
Net current-period other comprehensive income (loss)		22		(36)
Balance		(1,366)		(1,388)		(1,352)
Acquisition of noncontrolling interest				0
AOCI Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Balance		(1,378)		(1,344)
Other comprehensive income (loss) before reclassifications, gross		(106)		(114)
Tax benefit		42		27
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	115		65
Tax expense		(26)		(12)
Net current-period other comprehensive income (loss)		25		(34)
Balance		(1,353)		(1,378)		(1,344)
Acquisition of noncontrolling interest				0
AOCI Attributable to Noncontrolling Interest [Member]
Balance		26		36
Other comprehensive income (loss) before reclassifications, gross		(6)		5
Tax benefit		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive income (loss)		(6)		5
Balance		20		26		36
Acquisition of noncontrolling interest				(15)
AOCI Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Balance		26		36
Other comprehensive income (loss) before reclassifications, gross		(6)		5
Tax benefit		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive income (loss)		(6)		5
Balance		20		26		36
Acquisition of noncontrolling interest				(15)
AOCI Attributable to Parent [Member]
Balance		(1,362)		(1,316)		(1,268)
Other comprehensive income (loss) before reclassifications, gross		(112)		(108)
Tax benefit		42		27
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	111		62
Tax expense		(25)		(12)
Net current-period other comprehensive income (loss)		16		(31)
Balance		(1,346)		(1,362)		(1,316)
Acquisition of noncontrolling interest				(15)
AOCI Attributable to Parent [Member] | Huntsman International LLC [Member]
Balance		(1,352)		(1,308)		(1,263)
Other comprehensive income (loss) before reclassifications, gross		(112)		(109)
Tax benefit		42		27
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	115		65
Tax expense		(26)		(12)
Net current-period other comprehensive income (loss)		19		(29)
Balance		$ (1,333)		(1,352)		$ (1,308)
Acquisition of noncontrolling interest				$ (15)
[1]	Amounts are net of tax of $56 and $68 as of December 31, 2020 and January 1, 2020, respectively.
[2]	Amounts are net of tax of $68 and $71 as of December 31, 2019 and January 1, 2019, respectively.
[3]	See table below for details about these reclassifications.
[4]	Amounts are net of tax of $43 and $55 as of December 31, 2020 and January 1, 2020, respectively.
[5]	Amounts are net of tax of $55 and $57 as of December 31, 2019 and January 1, 2019, respectively.
[6]	Amounts are net of tax of $148 and $135 as of December 31, 2019 and January 1, 2019, respectively.
[7]	Amounts are net of tax of $157 and $148 as of December 31, 2020 and January 1, 2020, respectively.
[8]	Pension and other postretirement benefits amounts in parentheses indicate credits on our consolidated statements of operations.
[9]	Amounts are net of tax of $174 and $161 as of December 31, 2019 and January 1, 2019, respectively.
[10]	Amounts are net of tax of $178 and $174 as of December 31, 2020 and January 1, 2020, respectively.

Note 25 - Other Comprehensive_5

Note 25 - Other Comprehensive (Loss) Income - Reclassification Details (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2]	$ (12)		$ (11)		$ (12)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2]	(12)		(11)		(12)
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1]	43		1		2
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[3]	43		1		2
Accumulated Defined Benefit Plans Adjustment, Curtailment Gain (Loss) Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1]	(2)		0		0
Accumulated Defined Benefit Plans Adjustment, Curtailment Gain (Loss) Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[3]	(2)		0		0
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Discontinued Operations [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2],[3]	82		72		87
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | Discontinued Operations [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2],[3]	86		75		90
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1]	111	[4],[5]	62	[5],[6]	77
Tax expense	[1]	(25)	[4]	(12)	[6]	(13)
Total reclassifications for the period	[1]	86		50		64
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Discontinued Operations [Member]
Amounts reclassified from accumulated other comprehensive loss, gross		(5)		(7)		(22)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1]	115	[5],[7]	65	[5],[8]	80
Tax expense	[1]	(26)	[7]	(12)	[8]	(14)
Total reclassifications for the period	[1]	89		53		66
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | Discontinued Operations [Member]
Amounts reclassified from accumulated other comprehensive loss, gross		$ (5)		$ (7)		$ (22)
[1]	Pension and other postretirement benefits amounts in parentheses indicate credits on our consolidated statements of operations.
[2]	These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See "Note 19. Employee Benefit Plans."
[3]	Amounts contain approximately $5, $7 and $22 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2020, 2019 and 2018, respectively.
[4]	Amounts are net of tax of $157 and $148 as of December 31, 2020 and January 1, 2020, respectively.
[5]	See table below for details about these reclassifications.
[6]	Amounts are net of tax of $148 and $135 as of December 31, 2019 and January 1, 2019, respectively.
[7]	Amounts are net of tax of $178 and $174 as of December 31, 2020 and January 1, 2020, respectively.
[8]	Amounts are net of tax of $174 and $161 as of December 31, 2019 and January 1, 2019, respectively.

Note 26 - Related Party Trans_3

Note 26 - Related Party Transactions - Transactions With Affiliates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Sales to unconsolidated affiliates	$ 115	$ 133	$ 153
Inventory purchases from unconsolidated affiliates	$ 407	$ 434	$ 411

Note 27 - Operating Segment I_3

Note 27 - Operating Segment Information (Details Textual)	12 Months Ended
	Dec. 31, 2020
Number of Reportable Segments	4
Number of Operating Segments	4

Note 27 - Operating Segment I_4

Note 27 - Operating Segment Information - Financial Information By Segment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Total revenues	[1]	$ 6,018	$ 6,797	$ 7,604
Segment adjusted EBITDA	[2]	647	846	1,161
Interest expense, net—continuing operations		(86)	(111)	(115)
Interest expense, net—discontinued operations		0	0	(36)
Income tax (expense) benefit—continuing operations		(46)	38	(45)
Income tax expense		(242)	(35)	(86)
Depreciation and amortization—continuing operations		(283)	(270)	(255)
Depreciation and amortization—discontinued operations		0	(61)	(88)
Net income attributable to noncontrolling interests		32	36	313
Business acquisition and integration expenses and purchase accounting inventory adjustments		(31)	(5)	(9)
Merger costs		0	0	(2)
EBITDA from discontinued operations		1,017	265	171
Noncontrolling interest of discontinued operations		0	0	(232)
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Loss on early extinguishment of debt		0	(23)	(3)
Certain legal and other settlements and related expenses		(5)	(6)	(1)
Gain (loss) on sale of businesses/assets		280	(21)	0
Income from transition services arrangements		7	0	0
Certain nonrecurring information technology project implementation costs		(6)	(4)	0
Amortization of pension and postretirement actuarial losses		(76)	(66)	(67)
Plant incident remediation costs		(2)	(8)	0
Restructuring, impairment and plant closing and transition (costs) credits		(52)	41	6
Net income		1,066	598	650
Depreciation and amortization - continuing operations		283	270	255
Capital expenditures		249	274	251
Total assets		8,713	7,112
Goodwill		533	276
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Huntsman International LLC [Member]
Total revenues		6,018	6,797	7,604
Segment adjusted EBITDA		653	851	1,165
Interest expense, net—continuing operations		(88)	(126)	(136)
Interest expense, net—discontinued operations		0	0	(36)
Income tax (expense) benefit—continuing operations		(46)	41	(41)
Income tax expense		(242)	(35)	(86)
Depreciation and amortization—continuing operations		(283)	(270)	(252)
Depreciation and amortization—discontinued operations		0	(61)	(88)
Net income attributable to noncontrolling interests		32	36	313
Business acquisition and integration expenses and purchase accounting inventory adjustments		(31)	(5)	(9)
Merger costs		0	0	(2)
EBITDA from discontinued operations		1,017	265	171
Noncontrolling interest of discontinued operations		0	0	(232)
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Loss on early extinguishment of debt		0	(23)	(3)
Certain legal and other settlements and related expenses		(5)	(6)	(1)
Gain (loss) on sale of businesses/assets		280	(21)	0
Income from transition services arrangements		7	0	0
Certain nonrecurring information technology project implementation costs		(6)	(4)	0
Amortization of pension and postretirement actuarial losses		(79)	(70)	(71)
Plant incident remediation costs		(2)	(8)	0
Restructuring, impairment and plant closing and transition (costs) credits		(52)	41	6
Net income		1,067	587	636
Depreciation and amortization - continuing operations		283	270	252
Capital expenditures		249	274	251
Total assets		8,756	7,515
Goodwill		533	276
Fair value adjustments to Venator investment and related loss on disposal		(88)	(18)	(62)
Consolidation, Eliminations [Member]
Total revenues		(25)	(79)	81
Corporate and Reconciling Items [Member]
Depreciation and amortization—continuing operations		(13)	(17)	(16)
Depreciation and amortization - continuing operations		13	17	16
Capital expenditures		12	11	10
Total assets		2,198	1,265
Corporate and Reconciling Items [Member] | Huntsman International LLC [Member]
Depreciation and amortization—continuing operations		(13)	(17)	(13)
Depreciation and amortization - continuing operations		13	17	13
Capital expenditures		12	11	10
Total assets		2,241	1,668
Segment Reconciling Items [Member]
Total revenues	[1]	(25)	(79)	81
Segment adjusted EBITDA	[2],[3]	(161)	(155)	(171)
Segment Reconciling Items [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2],[3]	(155)	(150)	(167)
Polyurethanes [Member] | Operating Segments [Member]
Total revenues	[1]	3,584	3,911	4,282
Segment adjusted EBITDA	[2]	472	548	809
Depreciation and amortization—continuing operations		(130)	(120)	(108)
Depreciation and amortization - continuing operations		130	120	108
Capital expenditures		172	185	153
Total assets		3,970	3,437
Goodwill		312	177
Polyurethanes [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	472	548	809
Depreciation and amortization—continuing operations		(130)	(120)	(108)
Depreciation and amortization - continuing operations		130	120	108
Capital expenditures		172	185	153
Total assets		3,970	3,437
Goodwill		312	177
Performance Products [Member] | Operating Segments [Member]
Total revenues	[1]	1,023	1,158	1,301
Segment adjusted EBITDA	[2]	164	168	197
Depreciation and amortization—continuing operations		(79)	(81)	(78)
Depreciation and amortization - continuing operations		79	81	78
Capital expenditures		32	32	48
Total assets		1,062	1,125
Goodwill		18	16
Performance Products [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	164	168	197
Depreciation and amortization—continuing operations		(79)	(81)	(78)
Depreciation and amortization - continuing operations		79	81	78
Capital expenditures		32	32	48
Total assets		1,062	1,125
Goodwill		18	16
Advanced Materials [Member] | Operating Segments [Member]
Total revenues	[1]	839	1,044	1,116
Segment adjusted EBITDA	[2]	130	201	225
Depreciation and amortization—continuing operations		(45)	(36)	(37)
Depreciation and amortization - continuing operations		45	36	37
Capital expenditures		21	24	20
Total assets		1,002	774
Goodwill		203	83
Advanced Materials [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	130	201	225
Depreciation and amortization—continuing operations		(45)	(36)	(37)
Depreciation and amortization - continuing operations		45	36	37
Capital expenditures		21	24	20
Total assets		1,002	774
Goodwill		203	83
Textile Effects [Member] | Operating Segments [Member]
Total revenues	[1]	597	763	824
Segment adjusted EBITDA	[2]	42	84	101
Depreciation and amortization—continuing operations		(16)	(16)	(16)
Depreciation and amortization - continuing operations		16	16	16
Capital expenditures		12	22	20
Total assets		481	511
Textile Effects [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	42	84	101
Depreciation and amortization—continuing operations		(16)	(16)	(16)
Depreciation and amortization - continuing operations		16	16	16
Capital expenditures		12	22	$ 20
Total assets		$ 481	$ 511
[1]	Geographic information for revenues is based upon countries into which product is sold.
[2]	We use segment adjusted EBITDA as the measure of each segment's profit or loss. We believe that segment adjusted EBITDA more accurately reflects what the chief operating decision maker uses to make decisions about resources to be allocated to the segments and assess their financial performance. Segment adjusted EBITDA is defined as net income of Huntsman Corporation or Huntsman International, as appropriate, before interest, income tax, depreciation and amortization, net income attributable to noncontrolling interests and certain Corporate and other items, as well as eliminating the following adjustments: (a) business acquisition and integration expenses and purchase accounting inventory adjustments; (b) merger costs; (c) EBITDA from discontinued operations; (d) noncontrolling interest of discontinued operations; (e) fair value adjustments to Venator investment and related loss on disposal; (f) loss on early extinguishment of debt; (g) certain legal and other settlements and related expenses; (h) gain (loss) on sale of businesses/assets; (i) income from transition services arrangements related to the sale of our Chemical Intermediates Businesses to Indorama; (j) certain nonrecurring information technology project implementation costs; (k) amortization of pension and postretirement actuarial losses; (l) plant incident remediation costs; and (m) restructuring, impairment, plant closing and transition (costs) credits .
[3]	Corporate and other includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, nonoperating income and expense and gains and losses on the disposition of corporate assets.

Note 27 - Operating Segment I_5

Note 27 - Operating Segment Information - Revenues and Long-lived Assets By Geographical Area (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues	[1]	$ 6,018	$ 6,797	$ 7,604
Long-lived assets	[2],[3]	2,505	2,383
UNITED STATES
Revenues	[1]	1,863	2,025	2,136
Long-lived assets	[3]	1,078	970
CHINA
Revenues	[1]	1,115	1,076	1,260
Long-lived assets	[3]	251	247
NETHERLANDS
Long-lived assets	[3]	368	334
GERMANY
Revenues	[1]	388	541	537
Long-lived assets	[3]	144	137
INDIA
Revenues	[1]	211	319	352
Other Nations [Member]
Revenues	[1]	2,441	2,836	$ 3,319
Long-lived assets	[3]	358	341
SAUDI ARABIA
Long-lived assets	[3]	143	154
SINGAPORE
Long-lived assets	[3]	90	94
SWITZERLAND
Long-lived assets	[3]	$ 73	$ 106
[1]	Geographic information for revenues is based upon countries into which product is sold.
[2]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."
[3]	Long-lived assets consist of property, plant and equipment, net.

Schedule I - Condensed Financ_3

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Balance Sheets (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash and cash equivalents	[1]	$ 1,593	$ 525
Receivable from affiliate		8	13
Total current assets		3,568	3,755
Note receivable from affiliate-noncurrent		0	34
Investment in and advances to affiliates		373	535
Total assets		8,713	8,320
Payable to affiliate		34	57
Accrued liabilities	[1]	458	420
Total current liabilities		1,979	2,008
Other noncurrent liabilities	[1]	910	898
Total liabilities		5,040	5,496
Common stock $0.01 par value, 1,200,000,000 shares authorized, 258,520,411 and 257,405,496 shares issued and 220,046,262 and 224,295,868 shares outstanding, respectively		3	3
Additional paid-in capital		4,048	4,008
Treasury stock, 38,477,091 and 33,112,572 shares, respectively		(731)	(635)
Unearned stock-based compensation		(19)	(17)
Retained earnings		1,564	690
Accumulated other comprehensive loss		(1,346)	(1,362)
Total stockholders’ equity		3,519	2,687
Total liabilities and stockholders’ equity		8,713	8,320
Parent Company [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents		2	0
Prepaid assets		2	1
Receivable from affiliate		3	86
Note receivable from affiliate		0	100
Total current assets		7	187
Note receivable from affiliate-noncurrent		0	280
Investment in and advances to affiliates		3,561	2,626
Total assets		3,568	3,093
Payable to affiliate		39	396
Accrued liabilities		3	3
Total current liabilities		42	399
Other noncurrent liabilities		7	7
Total liabilities		49	406
Common stock $0.01 par value, 1,200,000,000 shares authorized, 258,520,411 and 257,405,496 shares issued and 220,046,262 and 224,295,868 shares outstanding, respectively		3	3
Additional paid-in capital		4,048	4,008
Treasury stock, 38,477,091 and 33,112,572 shares, respectively		(731)	(635)
Unearned stock-based compensation		(19)	(17)
Retained earnings		1,564	690
Accumulated other comprehensive loss		(1,346)	(1,362)
Total stockholders’ equity		3,519	2,687	$ 2,520	$ 2,620
Total liabilities and stockholders’ equity		$ 3,568	$ 3,093
[1]	At December 31, 2020 and December 31, 2019, respectively, $2 and nil of cash and cash equivalents, $6 and $13 of accounts and notes receivable (net), $38 and $35 of inventories, $167 and $180 of property, plant and equipment (net), $23 and $20 of other noncurrent assets, $119 and $100 of accounts payable, $13 and $10 of accrued liabilities, $47 and $36 of current portion of debt, $5 and $4 of current operating lease liabilities, $3 and $29 of long-term debt, $17 and $11 of noncurrent operating lease and $82 and $87 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See "Note 8. Variable Interest Entities."

Schedule I - Condensed Financ_4

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Balance Sheets (Details) (Parentheticals) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,200,000,000	1,200,000,000
Common stock, shares issued (in shares)	258,520,411	257,405,496
Common stock, shares outstanding (in shares)	220,046,262	224,295,868
Treasury stock, shares (in shares)	38,477,091	33,112,572
Parent Company [Member] | Reportable Legal Entities [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,200,000,000	1,200,000,000
Common stock, shares issued (in shares)	258,520,411	257,405,496
Common stock, shares outstanding (in shares)	220,046,262	224,295,868
Treasury stock, shares (in shares)	38,477,091	33,112,572

Schedule I - Condensed Financ_5

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Selling, general and administrative expenses	$ (775)	$ (786)	$ (789)
Interest income	(86)	(111)	(115)
Equity in income of subsidiaries	42	54	55
Other income	36	20	32
Net (loss) income	1,034	562	337
Parent Company [Member] | Reportable Legal Entities [Member]
Selling, general and administrative expenses	(6)	(5)	(4)
Interest income	2	15	21
Equity in income of subsidiaries	892	401	163
Dividend income—affiliate	144	148	154
Other income	2	3	3
Net (loss) income	$ 1,034	$ 562	$ 337

Schedule I - Condensed Financ_6

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 1,066	$ 598	$ 650
Foreign currency translations adjustments	41	2	(192)
Pension and other postretirement benefits adjustments	(19)	(37)	(39)
Other, net	0	(1)	(9)
Other comprehensive income, net of tax	22	(36)	(240)
Comprehensive income	1,088	562	410
Comprehensive income attributable to noncontrolling interests	(38)	(31)	(266)
Comprehensive income attributable to Huntsman Corporation	1,050	531	144
Reportable Legal Entities [Member] | Parent Company [Member]
Net income	1,034	562	337
Foreign currency translations adjustments	41	2	(192)
Pension and other postretirement benefits adjustments	(19)	(37)	(39)
Other, net	32	35	304
Other comprehensive income, net of tax	54	0	73
Comprehensive income	1,088	562	410
Comprehensive income attributable to noncontrolling interests	(38)	(31)	(266)
Comprehensive income attributable to Huntsman Corporation	$ 1,050	$ 531	$ 144

Schedule I - Condensed Financ_7

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Stockholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance	$ 2,687	$ 2,687
Net income		1,034	$ 562	$ 337
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		5	7	11
Recognition of stock-based compensation		23	23	21
Repurchase and cancellation of stock awards		$ (8)	(12)	(30)
Stock options exercised (in shares)		829,000
Stock options exercised		$ 3	2	17
Treasury stock repurchased (in shares)	(5,364,519)
Treasury stock repurchased	$ (96)	(96)	(208)	(277)
Disposition of a portion of Venator				18
Costs of the secondary offering of Venator				(2)
Deconsolidation of Venator				(591)
Accrued and unpaid dividends				(1)
Dividends declared on common stock		(145)	(150)	$ (156)
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			(84)
Balance		$ 3,519	$ 2,687
Common Stock Outstanding [Member]
Vesting of stock awards (in shares)			1,643,368	1,135,003
Repurchase and cancellation of stock awards (in shares)		(287,247)	(488,441)	(259,643)
Stock options exercised (in shares)		441,754	246,661	2,310,663
Treasury stock repurchased (in shares)			(10,099,892)	(10,405,457)
Common Stock [Member]
Issuance of nonvested stock awards		$ 0	$ 0	$ 0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Additional Paid-in Capital [Member]
Issuance of nonvested stock awards		18	17	14
Vesting of stock awards		5	7	11
Recognition of stock-based compensation		7	7	8
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		10	4	46
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				18
Costs of the secondary offering of Venator				(2)
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			(11)
Deferred Compensation, Share-based Payments [Member]
Issuance of nonvested stock awards		(18)	(17)	(14)
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		16	16	13
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Retained Earnings [Member]
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		(8)	(12)	(30)
Stock options exercised		(7)	(2)	(29)
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				(1)
Dividends declared on common stock		(145)	(150)	(156)
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
AOCI Attributable to Parent [Member]
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				160
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Parent Company [Member] | Reportable Legal Entities [Member]
Balance	$ 2,687	2,687	2,520	2,620
Net income		1,034	562	337
Other comprehensive loss		16	(46)	(198)
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		5	7	11
Recognition of stock-based compensation		23	23	21
Repurchase and cancellation of stock awards		(8)	(12)	(30)
Stock options exercised		3	2	17
Treasury stock repurchased		96	208	277
Disposition of a portion of Venator				18
Costs of the secondary offering of Venator				(2)
Deconsolidation of Venator				160
Accrued and unpaid dividends				(1)
Dividends declared on common stock		(145)	(150)	(156)
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			(11)
Balance		$ 3,519	$ 2,687	2,520
Parent Company [Member] | Reportable Legal Entities [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				$ 0
Parent Company [Member] | Reportable Legal Entities [Member] | Common Stock Outstanding [Member]
Balance (in shares)	224,295,868	224,295,868	232,994,172	240,213,606
Vesting of stock awards (in shares)		960,406	1,643,368	1,135,003
Repurchase and cancellation of stock awards (in shares)		(287,247)	(488,441)	(259,643)
Stock options exercised (in shares)		441,754	246,661	2,310,663
Treasury stock repurchased (in shares)		(5,364,519)	(10,099,892)	(10,405,457)
Balance (in shares)		220,046,262	224,295,868	232,994,172
Parent Company [Member] | Reportable Legal Entities [Member] | Common Stock Outstanding [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance (in shares)				0
Parent Company [Member] | Reportable Legal Entities [Member] | Common Stock [Member]
Balance	$ 3	$ 3	$ 3	$ 3
Net income		0	0	0
Other comprehensive loss		0	0	0
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Balance		3	3	3
Parent Company [Member] | Reportable Legal Entities [Member] | Common Stock [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				0
Parent Company [Member] | Reportable Legal Entities [Member] | Additional Paid-in Capital [Member]
Balance	4,008	4,008	3,984	3,889
Net income		0	0	0
Other comprehensive loss		0	0	0
Issuance of nonvested stock awards		18	17	14
Vesting of stock awards		5	7	11
Recognition of stock-based compensation		7	7	8
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		10	4	46
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				18
Costs of the secondary offering of Venator				(2)
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			(11)
Balance		4,048	4,008	3,984
Parent Company [Member] | Reportable Legal Entities [Member] | Additional Paid-in Capital [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				0
Parent Company [Member] | Reportable Legal Entities [Member] | Treasury Stock, Common [Member]
Balance	(635)	(635)	(427)	(150)
Net income		0	0	0
Other comprehensive loss		0	0	0
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		96	208	277
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Balance		(731)	(635)	(427)
Parent Company [Member] | Reportable Legal Entities [Member] | Treasury Stock, Common [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				0
Parent Company [Member] | Reportable Legal Entities [Member] | Deferred Compensation, Share-based Payments [Member]
Balance	(17)	(17)	(16)	(15)
Net income		0	0	0
Other comprehensive loss		0	0	0
Issuance of nonvested stock awards		(18)	(17)	(14)
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		16	16	13
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Balance		(19)	(17)	(16)
Parent Company [Member] | Reportable Legal Entities [Member] | Deferred Compensation, Share-based Payments [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				0
Parent Company [Member] | Reportable Legal Entities [Member] | Retained Earnings [Member]
Balance	690	690	292	161
Net income		1,034	562	337
Other comprehensive loss		0	0	0
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		(8)	(12)	(30)
Stock options exercised		(7)	(2)	(29)
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				0
Accrued and unpaid dividends				(1)
Dividends declared on common stock		(145)	(150)	(156)
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Balance		1,564	690	292
Parent Company [Member] | Reportable Legal Entities [Member] | Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				10
Parent Company [Member] | Reportable Legal Entities [Member] | AOCI Attributable to Parent [Member]
Balance	$ (1,362)	(1,362)	(1,316)	(1,268)
Net income		0	0	0
Other comprehensive loss		16	(46)	(198)
Issuance of nonvested stock awards		0	0	0
Vesting of stock awards		0	0	0
Recognition of stock-based compensation		0	0	0
Repurchase and cancellation of stock awards		0	0	0
Stock options exercised		0	0	0
Treasury stock repurchased		0	0	0
Disposition of a portion of Venator				0
Costs of the secondary offering of Venator				0
Deconsolidation of Venator				160
Accrued and unpaid dividends				0
Dividends declared on common stock		0	0	0
Adjustments to Additional Paid in Capital, Acquisition of Noncontrolling Interests			0
Balance		$ (1,346)	$ (1,362)	(1,316)
Parent Company [Member] | Reportable Legal Entities [Member] | AOCI Attributable to Parent [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				$ (10)

Schedule I - Condensed Financ_8

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net income									$ 1,034	$ 562	$ 337
Equity in income of subsidiaries									(42)	(54)	(55)
Stock-based compensation									27	29	27
Net cash provided by operating activities									253	897	1,207
Investing Activities:
Net cash provided by (used in) investing activities									1,463	(260)	(973)
Financing Activities:
Dividends paid to common stockholders	$ (35)	$ (36)	$ (36)	$ (37)	$ (35)	$ (38)	$ (38)	$ (39)	(144)	(150)	(156)
Proceeds from issuance of common stock									3	2	17
Repurchase of common stock									(96)	(208)	(277)
Net cash used in financing activities									(655)	(450)	(424)
Increase (decrease) in cash, cash equivalents and restricted cash									1,068	185	(225)
Cash, cash equivalents and restricted cash from continuing operations at beginning of period				525				340	525	340	481
Cash and cash equivalents at end of period					525					525	340
Reportable Legal Entities [Member] | Parent Company [Member]
Operating Activities:
Net income									1,034	562	337
Equity in income of subsidiaries									(892)	(401)	(163)
Stock-based compensation									1	1	1
Noncash interest income									(2)	(15)	(21)
Changes in operating assets and liabilities									(1)	13	19
Net cash provided by operating activities									140	160	173
Investing Activities:
Repayments of loan by affiliate									380	207	255
Net cash provided by (used in) investing activities									380	207	255
Financing Activities:
Dividends paid to common stockholders									(144)	(150)	(156)
Repurchase and cancellation of stock awards									(8)	(12)	(30)
Proceeds from issuance of common stock									3	2	17
Repurchase of common stock									(96)	(208)	(277)
(Decrease) increase in payable to affiliates									(273)	1	16
Net cash used in financing activities									(518)	(367)	(430)
Increase (decrease) in cash, cash equivalents and restricted cash									2	0	(2)
Cash, cash equivalents and restricted cash from continuing operations at beginning of period				$ 0				$ 0	0	0	2
Cash and cash equivalents at end of period	$ 2				$ 0				$ 2	$ 0	$ 0