Huntsman International 10-K 13 Feb 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Jan. 31, 2020	Jun. 28, 2019
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-32427
Entity Registrant Name	Huntsman Corporation
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			$ 4,186,891,111
Entity Common Stock, Shares Outstanding		225,098,027
Entity Central Index Key	0001307954
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	333-85141
Entity Registrant Name	Huntsman International LLC
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
No Trading Symbol Flag	true
Security Exchange Name	NONE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001089748
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 525	$ 340
Accounts and notes receivable (net of allowance for doubtful accounts of $19 and $21, respectively), ($221 and $341 pledged as collateral, respectively)	940	1,165
Accounts receivable from affiliates	13	18
Inventories	914	1,000
Prepaid expenses	83	58
Other current assets	72	145
Current assets held for sale	1,208	232
Total current assets	3,755	2,958
Property, plant and equipment, net	2,383	2,353
Investment in unconsolidated affiliates	535	526
Intangible assets, net	197	213
Goodwill	276	275
Deferred income taxes	292	324
Notes receivable from affiliate	34	34
Operating lease right-of-use assets	396
Other noncurrent assets	452	393
Noncurrent assets held for sale		877
Total assets	8,320	7,953
Current liabilities:
Accounts payable	765	761
Accounts payable to affiliates	57	32
Accrued liabilities	420	497
Current portion of debt	212	96
Current operating lease liabilities	42
Current liabilities held for sale	512	225
Total current liabilities	2,008	1,611
Long-term debt	2,177	2,224
Deferred income taxes	29	137
Noncurrent operating lease liabilities	384
Other noncurrent liabilities	898	949
Noncurrent liabilities held for sale		283
Total liabilities	5,496	5,204
Commitments and contingencies (Notes 21 and 22)
Huntsman Corporation stockholders' equity or Huntsman International LLC members' equity:
Common stock $0.01 par value, 1,200,000,000 shares authorized, 257,405,496 and 256,006,849 shares issued and 224,295,868 and 232,994,172 shares outstanding, respectively	3	3
Additional paid-in capital	4,008	3,984
Treasury stock, 33,112,572 and 23,012,680 shares, respectively	(635)	(427)
Unearned stock-based compensation	(17)	(16)
Retained earnings	690	292
Accumulated other comprehensive loss	(1,362)	(1,316)
Total Huntsman Corporation stockholders' equity	2,687	2,520
Noncontrolling interests in subsidiaries	137	229
Total equity	2,824	2,749
Total liabilities and equity	8,320	7,953
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Current assets:
Cash and cash equivalents	525	340
Accounts and notes receivable (net of allowance for doubtful accounts of $19 and $21, respectively), ($221 and $341 pledged as collateral, respectively)	940	1,165
Accounts receivable from affiliates	410	399
Inventories	914	1,000
Prepaid expenses	82	57
Other current assets	79	147
Current assets held for sale	1,208	232
Total current assets	4,158	3,340
Property, plant and equipment, net	2,383	2,353
Investment in unconsolidated affiliates	535	526
Intangible assets, net	197	213
Goodwill	276	275
Deferred income taxes	292	324
Notes receivable from affiliate	34	34
Operating lease right-of-use assets	396
Other noncurrent assets	452	393
Noncurrent assets held for sale		877
Total assets	8,723	8,335
Current liabilities:
Accounts payable	765	761
Accounts payable to affiliates	143	104
Accrued liabilities	417	494
Notes payable to affiliates	100	100
Current portion of debt	212	96
Current operating lease liabilities	42
Current liabilities held for sale	512	225
Total current liabilities	2,191	1,780
Long-term debt	2,177	2,224
Notes payable to affiliates	280	488
Deferred income taxes	29	135
Noncurrent operating lease liabilities	384
Other noncurrent liabilities	890	937
Noncurrent liabilities held for sale		283
Total liabilities	5,951	5,847
Commitments and contingencies (Notes 21 and 22)
Huntsman Corporation stockholders' equity or Huntsman International LLC members' equity:
Members' equity, 2,728 units issued and outstanding	3,675	3,658
Retained earnings	312	(91)
Accumulated other comprehensive loss	(1,352)	(1,308)
Total Huntsman International LLC members' equity	2,635	2,259
Noncontrolling interests in subsidiaries	137	229
Total equity	2,772	2,488
Total liabilities and equity	$ 8,723	$ 8,335

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Accounts and notes receivable, allowance for doubtful accounts (in dollars)	$ 19	$ 21
Accounts and notes receivable, pledged as collateral (in dollars)	$ 221	$ 341
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	257,405,496	256,006,849
Common stock, shares outstanding	224,295,868	232,994,172
Treasury stock, shares	33,112,572	23,012,680
Variable Interest Entity
Cash and cash equivalents	$ 525	$ 340
Accounts and notes receivable (net)	940	1,165
Inventories	914	1,000
Other current assets	72	145
Property, plant and equipment (net)	2,383	2,353
Intangible assets (net)	197	213
Other noncurrent assets	452	393
Accounts payable	765	761
Accrued liabilities	420	497
Current portion of debt	212	96
Current operating lease liabilities	42
Long-term debt	2,177	2,224
Noncurrent operating lease liabilities	384
Other noncurrent liabilities	898	949
Consolidated VIE's
Variable Interest Entity
Cash and cash equivalents	0	7
Accounts and notes receivable (net)	13	30
Inventories	35	49
Other current assets	0	5
Property, plant and equipment (net)	180	265
Intangible assets (net)	0	10
Other noncurrent assets	20	52
Accounts payable	100	123
Accrued liabilities	10	30
Current portion of debt	36	25
Current operating lease liabilities	4	0
Long-term debt	29	61
Noncurrent operating lease liabilities	11	0
Other noncurrent liabilities	87	97
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Accounts and notes receivable, allowance for doubtful accounts (in dollars)	19	21
Accounts and notes receivable, pledged as collateral (in dollars)	$ 221	$ 341
Members' equity, units issued (in units)	2,728	2,728
Members' equity, units outstanding (in units)	2,728	2,728
Variable Interest Entity
Cash and cash equivalents	$ 525	$ 340
Accounts and notes receivable (net)	940	1,165
Inventories	914	1,000
Other current assets	79	147
Property, plant and equipment (net)	2,383	2,353
Intangible assets (net)	197	213
Other noncurrent assets	452	393
Accounts payable	765	761
Accrued liabilities	417	494
Current portion of debt	212	96
Current operating lease liabilities	42
Long-term debt	2,177	2,224
Noncurrent operating lease liabilities	384
Other noncurrent liabilities	890	937
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Consolidated VIE's
Variable Interest Entity
Cash and cash equivalents	0	7
Accounts and notes receivable (net)	13	30
Inventories	35	49
Other current assets	0	5
Property, plant and equipment (net)	180	265
Intangible assets (net)	0	10
Other noncurrent assets	20	52
Accounts payable	100	123
Accrued liabilities	10	30
Current portion of debt	36	25
Current operating lease liabilities	4	0
Long-term debt	29	61
Noncurrent operating lease liabilities	11	0
Other noncurrent liabilities	$ 87	$ 97

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Total revenues	$ 6,797	$ 7,604	$ 6,845
Cost of goods sold	5,415	5,840	5,194
Gross profit	1,382	1,764	1,651
Operating expenses:
Selling, general and administrative	786	789	759
Research and development	137	145	132
Restructuring, impairment and plant closing (credits) costs	(41)	(7)	19
Merger costs		2	28
Other operating expense (income), net	31	8	(16)
Total operating expenses	913	937	922
Operating income	469	827	729
Interest expense	(111)	(115)	(165)
Equity in income of investment in unconsolidated affiliates	54	55	13
Fair value adjustments to Venator investment	(18)	(62)
Loss on early extinguishment of debt	(23)	(3)	(54)
Other income, net	20	32	8
Income from continuing operations before income taxes	391	734	531
Income tax benefit (expense)	38	(45)	(20)
Income from continuing operations	429	689	511
Income (loss) from discontinued operations, net of tax	169	(39)	230
Net income	598	650	741
Net income attributable to noncontrolling interests	(36)	(313)	(105)
Net income attributable to Huntsman Corporation or Huntsman International LLC	$ 562	$ 337	$ 636
Basic (loss) income per share:
Income from continuing operations attributable to Huntsman Corporation common stockholders	$ 1.72	$ 2.55	$ 1.71
Income (loss) from discontinued operations attributable to Huntsman Corporation common stockholders, net of tax	0.74	(1.13)	0.96
Net income (loss) attributable to Huntsman Corporation common stockholders (in dollars per share)	$ 2.46	$ 1.42	$ 2.67
Weighted average shares (in shares)	228.9	238.1	238.4
Diluted income (loss) per share:
Income from continuing operations attributable to Huntsman Corporation common stockholders	$ 1.70	$ 2.52	$ 1.66
Income (loss) from discontinued operations attributable to Huntsman Corporation common stockholders, net of tax	0.74	(1.13)	0.95
Net income attributable to Huntsman Corporation common stockholders (in dollars per share)	$ 2.44	$ 1.39	$ 2.61
Weighted average shares (in shares)	230.6	241.6	243.9
Amounts attributable to Huntsman Corporation common stockholders:
Income from continuing operations	$ 393	$ 608	$ 406
Income (loss) from discontinued operations, net of tax	169	(271)	230
Net income attributable to Huntsman Corporation or Huntsman International LLC	562	337	636
Third Party Customers
Revenues:
Total revenues	6,664	7,451	6,684
Related Party Customers
Revenues:
Total revenues	133	153	161
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Revenues:
Total revenues	6,797	7,604	6,845
Cost of goods sold	5,415	5,837	5,188
Gross profit	1,382	1,767	1,657
Operating expenses:
Selling, general and administrative	781	784	754
Research and development	137	145	132
Restructuring, impairment and plant closing (credits) costs	(41)	(7)	19
Merger costs		2	28
Other operating expense (income), net	31	8	(16)
Total operating expenses	908	932	917
Operating income	474	835	740
Interest expense	(126)	(136)	(181)
Equity in income of investment in unconsolidated affiliates	54	55	13
Fair value adjustments to Venator investment	(18)	(62)
Loss on early extinguishment of debt	(23)	(3)	(54)
Other income, net	16	27	6
Income from continuing operations before income taxes	377	716	524
Income tax benefit (expense)	41	(41)	(17)
Income from continuing operations	418	675	507
Income (loss) from discontinued operations, net of tax	169	(39)	227
Net income	587	636	734
Net income attributable to noncontrolling interests	(36)	(313)	(105)
Net income attributable to Huntsman Corporation or Huntsman International LLC	551	323	629
Amounts attributable to Huntsman Corporation common stockholders:
Net income attributable to Huntsman Corporation or Huntsman International LLC	551	323	629
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Third Party Customers
Revenues:
Total revenues	6,664	7,451	6,684
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Related Party Customers
Revenues:
Total revenues	$ 133	$ 153	$ 161

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 598	$ 650	$ 741
Other comprehensive (loss) income, net of tax:
Foreign currency translations adjustments	2	(192)	210
Pension and other postretirement benefits adjustments	(37)	(39)	86
Other, net	(1)	(9)
Other comprehensive (loss) income, net of tax	(36)	(240)	296
Comprehensive income	562	410	1,037
Comprehensive income attributable to noncontrolling interests	(31)	(266)	(127)
Comprehensive income (loss) attributable to Huntsman Corporation	531	144	910
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Net income	587	636	734
Other comprehensive (loss) income, net of tax:
Foreign currency translations adjustments	2	(194)	210
Pension and other postretirement benefits adjustments	(35)	(37)	112
Other, net	(1)	(6)	(1)
Other comprehensive (loss) income, net of tax	(34)	(237)	321
Comprehensive income	553	399	1,055
Comprehensive income attributable to noncontrolling interests	(31)	(266)	(127)
Comprehensive income (loss) attributable to Huntsman Corporation	$ 522	$ 133	$ 928

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIESMembers' equity	HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES(Accumulated deficit) retained earnings	HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIESAccumulated other comprehensive loss	HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIESNoncontrolling interests in subsidiaries	HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES	Common stock	Additional paid-in capital	Treasury stock	Unearned stock-based compensation	(Accumulated deficit) retained earnings	Accumulated other comprehensive loss	Noncontrolling interests in subsidiaries	Total
Balance at the beginning of the period at Dec. 31, 2016						$ 3	$ 3,447	$ (150)	$ (17)	$ (325)	$ (1,671)	$ 180	$ 1,467
Balance (in shares) at Dec. 31, 2016						236,370,347
Balance at the beginning of the period at Dec. 31, 2016	$ 3,226	$ (779)	$ (1,691)	$ 180	$ 936
Balance (in units) at Dec. 31, 2016	2,728
Increase (Decrease) in Stockholders' Equity and Members' Equity
Net income		629		105	734					636		105	741
Other comprehensive (loss) income			428	(107)	321						403	(107)	296
Issuance of nonvested stock awards							18		(18)
Vesting of stock awards							8						8
Vesting of stock awards (in shares)						1,316,975
Recognition of stock-based compensation							10		18				28
Repurchase and cancellation of stock awards										(12)			(12)
Repurchase and cancellation of stock awards (in shares)						(402,978)
Stock options exercised							53			(18)			35
Stock options exercised (in shares)						2,929,262
Dividends paid to parent		(120)			(120)
Contribution from parent	$ 35				35
Disposition of a portion of Venator	413				413		413						413
Costs of the IPO and secondary offering of Venator	(58)				(58)		(58)						(58)
Conversion of restricted awards to Venator awards							(2)		2
Noncontrolling interest from partial disposal of Venator				602	602							602	602
Dividends declared or paid to noncontrolling interests				(34)	(34)							(34)	(34)
Contribution from noncontrolling interests				5	5							5	5
Dividends declared on common stock										(120)			(120)
Balance at the end of the period at Dec. 31, 2017						$ 3	3,889	(150)	(15)	161	(1,268)	751	3,371
Balance (in shares) at Dec. 31, 2017						240,213,606
Balance at the end of the period at Dec. 31, 2017	$ 3,616	(270)	(1,263)	751	2,834
Balance (in units) at Dec. 31, 2017	2,728
Increase (Decrease) in Stockholders' Equity and Members' Equity
Cumulative effect of changes in fair value of equity investments		10	(10)							10	(10)
Net income		323		313	636					337		313	650
Other comprehensive (loss) income			(195)	(42)	(237)						(198)	(42)	(240)
Issuance of nonvested stock awards							14		(14)
Vesting of stock awards							11						11
Vesting of stock awards (in shares)						1,135,003
Recognition of stock-based compensation							8		13				21
Repurchase and cancellation of stock awards										(30)			(30)
Repurchase and cancellation of stock awards (in shares)						(259,643)
Stock options exercised							46			(29)			17
Stock options exercised (in shares)						2,310,663
Dividends paid to parent		(154)			(154)
Contribution from parent	$ 26				26
Disposition of a portion of Venator	18				18		18						18
Costs of the IPO and secondary offering of Venator	(2)				(2)		(2)						(2)
Noncontrolling interest from partial disposal of Venator				27	27							27	27
Treasury stock repurchased								(277)					(277)
Treasury stock repurchased (in shares)						(10,405,457)
Dividends declared or paid to noncontrolling interests				(69)	(69)							(69)	(69)
Deconsolidation of Venator			160	(751)	(591)						160	(751)	(591)
Accrued and unpaid dividends										(1)			(1)
Dividends declared on common stock										(156)			(156)
Balance at the end of the period at Dec. 31, 2018						$ 3	3,984	(427)	(16)	292	(1,316)	229	$ 2,749
Balance (in shares) at Dec. 31, 2018						232,994,172							232,994,172
Balance at the end of the period at Dec. 31, 2018	$ 3,658	(91)	(1,308)	229	$ 2,488
Balance (in units) at Dec. 31, 2018	2,728				2,728
Increase (Decrease) in Stockholders' Equity and Members' Equity
Net income		551		36	$ 587					562		36	$ 598
Other comprehensive (loss) income			(44)	10	(34)						(46)	10	(36)
Issuance of nonvested stock awards							17		(17)
Vesting of stock awards							7						7
Vesting of stock awards (in shares)						1,643,368
Recognition of stock-based compensation							7		16				23
Repurchase and cancellation of stock awards										(12)			(12)
Repurchase and cancellation of stock awards (in shares)						(488,441)
Stock options exercised							4			(2)			2
Stock options exercised (in shares)						246,661
Dividends paid to parent		(148)			(148)
Contribution from parent	$ 28				28
Treasury stock repurchased								(208)					$ (208)
Treasury stock repurchased (in shares)						(10,099,892)							(10,099,892)
Acquisition of noncontrolling interests, net of tax	(11)			(73)	(84)		(11)					(73)	$ (84)
Dividends declared or paid to noncontrolling interests				(65)	(65)							(65)	(65)
Dividends declared on common stock										(150)			(150)
Balance at the end of the period at Dec. 31, 2019						$ 3	$ 4,008	$ (635)	$ (17)	$ 690	$ (1,362)	$ 137	$ 2,824
Balance (in shares) at Dec. 31, 2019						224,295,868							224,295,868
Balance at the end of the period at Dec. 31, 2019	$ 3,675	$ 312	$ (1,352)	$ 137	$ 2,772
Balance (in units) at Dec. 31, 2019	2,728				2,728

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED STATEMENTS OF EQUITY
Dividends declared per share (in dollars per share)	$ 0.65	$ 0.65	$ 0.50

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income	$ 598	$ 650	$ 741
Less: (Income) loss from discontinued operations, net of tax	(169)	39	(230)
Income from continuing operations	429	689	511
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	(54)	(55)	(13)
Unrealized losses on fair value adjustments to Venator investment	19	62
Cash received from return on investment in unconsolidated subsidiary	24
Depreciation and amortization	270	255	236
Noncash lease expense	55
(Gain) loss on disposal of businesses/assets, net	(49)	3	(8)
Loss on early extinguishment of debt	23	3	54
Noncash interest expense	3	1	8
Noncash restructuring and impairment charges (credits)	3	(22)	1
Deferred income taxes	(93)	(167)	(95)
Noncash loss (gain) on foreign currency transactions	8	(3)	(5)
Stock-based compensation	29	27	36
Other, net	9	5	6
Changes in operating assets and liabilities:
Accounts and notes receivable	138	(22)	(161)
Inventories	77	(80)	(88)
Prepaid expenses	(27)	(9)	(11)
Other current assets	53	59	23
Other noncurrent assets	(90)	(41)	(46)
Accounts payable	21	12	127
Accrued liabilities	(50)	44	54
Other noncurrent liabilities	(142)	(57)	43
Net cash provided by operating activities from continuing operations	656	704	672
Net cash provided by operating activities from discontinued operations	241	503	547
Net cash provided by operating activities	897	1,207	1,219
Investing Activities:
Capital expenditures	(274)	(251)	(234)
Acquisition of a business, net of cash acquired		(366)	(14)
Proceeds from sale of businesses/assets	50		25
Cash received from termination of cross-country interest rate contacts			7
Cash received from forward swap contract related to the sale of investment in Venator	16	3
Other, net	7	(1)	(1)
Net cash used in investing activities from continuing operations	(201)	(615)	(217)
Net cash used in investing activities from discontinued operations	(59)	(358)	(207)
Net cash used in investing activities	(260)	(973)	(424)
Financing Activities:
Net (repayments) borrowings on revolving loan facilities	(89)	125	(41)
Net (repayments) borrowings on overdraft facilities		(1)	1
Repayments of long-term debt	(676)	(68)	(2,058)
Proceeds from issuance of long-term debt	742		24
Proceeds from long-term debt of Venator			750
Repayments of short-term debt		(8)	(15)
Borrowings on short-term debt	102	6	8
Repayments of notes payable	(27)	(29)	(27)
Borrowings on notes payable	37	27	31
Debt issuance costs paid	(8)	(4)	(21)
Costs of early extinguishment of debt	(21)
Dividends paid to common stockholders	(150)	(156)	(120)
Dividends paid to noncontrolling interests	(41)	(69)	(34)
Cash paid for noncontrolling interests	(101)
Contribution from noncontrolling interests			5
Repurchase of common stock	(208)	(277)
Repurchase and cancellation of stock awards	(12)	(30)	(12)
Proceeds from issuance of common stock	2	17	35
Proceeds from the IPO of Venator			1,012
Cash paid for expenses for the IPO of Venator			(58)
Proceeds from the secondary offering of Venator		44
Cash paid for expenses of the secondary offering of Venator		(2)
Other, net		1	1
Net cash used in financing activities	(450)	(424)	(519)
Effect of exchange rate changes on cash	(2)	(35)	18
Increase in cash, cash equivalents and restricted cash	185	(225)	294
Cash, cash equivalents and restricted cash from continuing operations at beginning of period	340	481	396
Cash, cash equivalents and restricted cash from discontinued operations at beginning of period		238	29
Deconsolidation of cash, cash equivalents and restricted cash from Venator		(154)
Cash, cash equivalents and restricted cash at end of period	525	340	719
Supplemental cash flow information:
Cash paid for interest	111	163	175
Cash paid for income taxes	100	179	25
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Operating Activities:
Net income	587	636	734
Less: (Income) loss from discontinued operations, net of tax	(169)	39	(227)
Income from continuing operations	418	675	507
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	(54)	(55)	(13)
Unrealized losses on fair value adjustments to Venator investment	19	62
Cash received from return on investment in unconsolidated subsidiary	24
Depreciation and amortization	270	252	228
Noncash lease expense	55
(Gain) loss on disposal of businesses/assets, net	(49)	3	(8)
Loss on early extinguishment of debt	23	3	54
Noncash interest expense	18	22	25
Noncash restructuring and impairment charges (credits)	3	(22)	1
Deferred income taxes	(91)	(172)	(90)
Noncash loss (gain) on foreign currency transactions	8	(3)	(5)
Noncash compensation	28	26	35
Other, net	10	7	7
Changes in operating assets and liabilities:
Accounts and notes receivable	138	(23)	(159)
Inventories	77	(80)	(88)
Prepaid expenses	(27)	(8)	(10)
Other current assets	48	59	20
Other noncurrent assets	(90)	(41)	(46)
Accounts payable	7	(9)	111
Accrued liabilities	(51)	44	48
Other noncurrent liabilities	(139)	(53)	49
Net cash provided by operating activities from continuing operations	645	687	666
Net cash provided by operating activities from discontinued operations	241	503	542
Net cash provided by operating activities	886	1,190	1,208
Investing Activities:
Capital expenditures	(274)	(251)	(234)
Acquisition of a business, net of cash acquired		(366)	(14)
Proceeds from sale of businesses/assets	50		25
Increase in receivable from affiliate	(1)	(16)	(15)
Cash received from termination of cross-country interest rate contacts			7
Cash received from forward swap contract related to the sale of investment in Venator	16	3
Other, net	7
Net cash used in investing activities from continuing operations	(202)	(630)	(231)
Net cash used in investing activities from discontinued operations	(59)	(358)	(207)
Net cash used in investing activities	(261)	(988)	(438)
Financing Activities:
Net (repayments) borrowings on revolving loan facilities	(89)	125	(41)
Net (repayments) borrowings on overdraft facilities		(1)	1
Repayments of long-term debt	(676)	(68)	(2,058)
Proceeds from issuance of long-term debt	742		24
Proceeds from long-term debt of Venator			750
Repayments of short-term debt		(8)	(15)
Borrowings on short-term debt	102	6	8
Repayments of notes payable to affiliate	(207)	(255)
Proceeds from issuance of notes payable to affiliate			47
Repayments of notes payable	(27)	(29)	(27)
Borrowings on notes payable	37	27	31
Debt issuance costs paid	(8)	(4)	(21)
Costs of early extinguishment of debt	(21)
Dividends paid to parent	(148)	(154)	(120)
Dividends paid to noncontrolling interests	(41)	(69)	(34)
Cash paid for noncontrolling interests	(101)
Contribution from noncontrolling interests			5
Proceeds from the IPO of Venator			1,012
Cash paid for expenses for the IPO of Venator			(58)
Proceeds from the secondary offering of Venator		44
Cash paid for expenses of the secondary offering of Venator		(2)
Other, net	(1)	(2)	1
Net cash used in financing activities	(438)	(390)	(495)
Effect of exchange rate changes on cash	(2)	(35)	18
Increase in cash, cash equivalents and restricted cash	185	(223)	293
Cash, cash equivalents and restricted cash from continuing operations at beginning of period	340	479	395
Cash, cash equivalents and restricted cash from discontinued operations at beginning of period		238	29
Deconsolidation of cash, cash equivalents and restricted cash from Venator		(154)
Cash, cash equivalents and restricted cash at end of period	525	340	717
Supplemental cash flow information:
Cash paid for interest	111	163	175
Cash paid for income taxes	$ 100	$ 179	$ 25

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Capital expenditures in accounts payable	$ 64	$ 66	$ 51
Cash paid for interest by Venator after IPO date		46	6
Cash paid for income taxes by Venator after IPO date		38	16
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Capital expenditures in accounts payable	64	66	51
Stock-based compensation	$ 28	26	35
Cash paid for interest by Venator after IPO date		46	6
Cash paid for income taxes by Venator after IPO date		$ 38	$ 16

GENERAL

GENERAL	12 Months Ended
	Dec. 31, 2019
GENERAL
GENERAL	1. GENERAL Definitions For convenience in this report, the terms “Company,” “our” or “we” may be used to refer to Huntsman Corporation and, unless the context otherwise requires, its subsidiaries and predecessors. Any references to the “Company” “we” “us” or “our” as of a date prior to October 19, 2004 (the date of our Company’s formation) are to Huntsman Holdings, LLC and its subsidiaries (including their respective predecessors). In this report, “Huntsman International” refers to Huntsman International LLC (our wholly-owned subsidiary) and, unless the context otherwise requires, its subsidiaries; “AAC” refers to Arabian Amines Company, our consolidated manufacturing joint venture with the Zamil Group; “HPS” refers to Huntsman Polyurethanes Shanghai Ltd. (our consolidated splitting joint venture with Shanghai Chlor-Alkali Chemical Company, Ltd); and “SLIC” refers to Shanghai Liengheng Isocyanate Company (our unconsolidated manufacturing joint venture with BASF and three Chinese chemical companies). In this report, we may use, without definition, the common names of competitors or other industry participants. We may also use the common names or abbreviations for certain chemicals or products. Description of Business We are a global manufacturer of differentiated organic chemical products. We operate in four segments: Polyurethanes, Performance Products, Advanced Materials and Textile Effects. Our products comprise a broad range of chemicals and formulations, which we market globally to a diversified group of consumer and industrial customers. Our products are used in a wide range of applications, including those in the adhesives, aerospace, automotive, construction products, personal care and hygiene, durable and non-durable consumer products, digital inks, electronics, insulation, medical, packaging, coatings and construction, power generation, refining, synthetic fiber, textile chemicals and dye industries. We are a leading global producer in many of our key product lines, including MDI, amines, maleic anhydride, epoxy-based polymer formulations, textile chemicals and dyes. Company Our Company, a Delaware corporation, was formed in 2004 to hold the Huntsman businesses, which were founded by Jon M. Huntsman. Mr. Huntsman founded the predecessor to our Company in 1970 as a small polystyrene plastics packaging company. Since then, we have grown through a series of acquisitions and now own a global portfolio of businesses. 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. Recent Developments Sale of Chemical Intermediates Businesses On January 3, 2020, we completed the sale of our Chemical Intermediates Businesses to Indorama in a transaction valued at approximately $2 billion, comprising a cash purchase price of approximately $1.93 billion, which includes estimated adjustments to the purchase price for working capital, plus the transfer of approximately $72 million in net underfunded pension and other post-employment benefit liabilities. The final purchase price is subject to customary post-closing adjustments. The net after tax cash proceeds are expected to be approximately $1.6 billion. For more information, see “Note 4. Discontinued Operations and Business Dispositions—Sale of Chemical Intermediates Businesses.” ​ Icynene-Lapolla Acquisition On December 5, 2019, we entered into an agreement with an affiliate of FFL Partners, LLC to acquire Icynene-Lapolla, a leading North American manufacturer and distributor of spray polyurethane foam insulation systems for residential and commercial applications. Icynene-Lapolla operates two manufacturing facilities located in Houston, Texas and Mississauga, Ontario. Under terms of the agreement, we agreed to pay $350 million, subject to customary closing adjustments, in an all-cash transaction to be funded from available liquidity. The transaction is expected to close in the first quarter of 2020. The acquired business is expected to be integrated into our Polyurethanes segment. ​ Acquisition of Remaining Interest in Sasol-Huntsman Joint Venture ​ On September 30, 2019, we acquired from Sasol, our former joint venture partner, the 50% noncontrolling interest that we did not own in the Sasol-Huntsman maleic anhydride joint venture. The joint venture owned a manufacturing facility in Moers, Germany with capacity to produce 230 million pounds of maleic anhydride. We paid Sasol $101 million, which included acquired cash, net of any debt. The purchase price was funded from the 2019 Term Loan.” ​ Huntsman Corporation and Huntsman International Financial Statements 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 step-acquisition of Huntsman International Holdings LLC, the former parent company of Huntsman International that was merged into Huntsman International in 2005; ● the different capital structures; and ● a note payable from Huntsman International to us. ​

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Carrying Value of Long-Lived Assets 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 be recoverable. Recoverability is based upon current and anticipated undiscounted cash flows, and we recognize an impairment when such estimated cash flows are less than the carrying value of the asset. Measurement of the amount of impairment, if any, is based upon the difference between carrying value and fair value. Fair value is generally estimated by discounting estimated future cash flows using a discount rate commensurate with the risks involved or selling price of assets held for sale. ​ Cash and Cash Equivalents We consider cash in checking accounts and cash in short-term highly liquid investments with remaining maturities of three months or less at the date of purchase, to be cash and cash equivalents. ​ Cost of Goods Sold 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 and Hedging Activities All derivatives, whether designated in hedging relationships or not, are recorded on our balance sheet at fair value. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and the hedged items are recognized in earnings. If the derivative is designated as a cash flow hedge, changes in the fair value of the derivative are recorded in accumulated other comprehensive loss, to the extent effective, and will be recognized in the income statement when the hedged item affects earnings. Changes in the fair value of the hedge in the net investment of certain international operations are recorded in other comprehensive income (loss), to the extent effective. The effectiveness of a cash flow hedging relationship is established at the inception of the hedge, and after inception we perform effectiveness assessments at least every three months. A derivative designated as a cash flow hedge is determined to be effective if the change in value of the hedge divided by the change in value of the hedged item is within a range of 80% to 125%. Hedge ineffectiveness in a cash flow hedge occurs only if the cumulative gain or loss on the derivative hedging instrument exceeds the cumulative change in the expected future cash flows on the hedged transaction. For a derivative that does not qualify or has not been designated as a hedge, changes in fair value are recognized in earnings. ​ Environmental Expenditures 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. Environmental, Health and Safety Matters.” ​ Equity Method Investments 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. We elected the fair value option to account for our equity method investment in Venator. For more information, see “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator.” The change in the fair value related to our equity method investment in Venator is presented in “Fair value adjustments to Venator investment” on the consolidated statements of operations. ​ Foreign Currency Translation 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-year period), the U.S. dollar is considered to be the functional currency and gains and losses from remeasurement to the U.S. dollar from the local currency are included in the statement of operations. Where a subsidiary’s operations are effectively run, managed, financed and contracted in U.S. dollars, such as certain finance subsidiaries outside of the U.S., the U.S. dollar is considered to be the functional currency. Foreign currency transaction gains and losses are recorded in other operating expense (income), net in our consolidated statements of operations and were (losses) gains of $(8) million, $3 million and $5 million for the years ended December 31, 2019, 2018 and 2017, respectively. Income Taxes 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 that they will be realized. Valuation allowances are reviewed on a tax jurisdiction basis to analyze whether there is sufficient positive or negative evidence to support a change in judgment about the realizability of the related deferred tax assets for each jurisdiction. These conclusions require significant judgment. In evaluating the objective evidence that historical results provide, we consider the cyclicality of businesses and cumulative income or losses during the applicable period. Cumulative losses incurred over the period limits our ability to consider other subjective evidence such as our projections for the future. Changes in expected future income in applicable jurisdictions could affect the realization of deferred tax assets in those jurisdictions. On December 22, 2017, the U.S. Tax Reform Act was signed into law. The U.S. Tax Reform Act significantly revised the U.S. corporate income tax regime by, among other things, lowering the U.S. corporate tax rate from 35% to 21%, (effective January 1, 2018), creation of the base erosion anti-abuse tax provision (“BEAT”) and a new provision designed to tax global intangible low-taxed income (“GILTI”) (effective January 1, 2018) and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. As a result of the enactment of the U.S. Tax Reform Act, the Company recorded a net tax benefit of $20 million over 2017 and 2018. We recorded a net tax benefit of $135 million due to a remeasurement of deferred U.S. tax assets and liabilities (including a provisional tax benefit of $137 million in 2017, partially offset by a final tax expense of $2 million in 2018) offset by tax expense of $115 million due to the transition tax on the deemed repatriation of deferred foreign income (including a provisional tax expense of $85 million in 2017 and a $30 million measurement period adjustment in 2018). We did not make the election to reclassify the income tax effects of the U.S. Tax Reform Act from accumulated other comprehensive income to retained earnings. ​ 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 to be realized based on the merits of the position under tax law, in order to recognize an income tax benefit. This requires us to make significant judgments regarding the merits of income tax positions and the application of income tax law. Additionally, if a tax position meets the recognition criteria of more-likely-than-not we are required to make judgments and apply assumptions to measure the amount of the tax benefits to recognize. These judgments are based on the probability of the amount of tax benefits that would be realized if the tax position was challenged by the taxing authorities. Interpretations and guidance surrounding income tax laws and regulations change over time. As a consequence, changes in assumptions and judgments can materially affect amounts recognized in our consolidated financial statements. For further information concerning taxes, see “Note 20. Income Taxes.” ​ Intangible Assets and Goodwill 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: ​ Patents and technology 5 - 30 years Trademarks 9 - 30 years Licenses and other agreements 5 - 15 years Other intangibles 5 - 15 years ​ Goodwill represents costs in excess of fair values assigned to the underlying net assets of acquired businesses. Goodwill is not subject to any method of amortization, but is tested for impairment annually (at the beginning of the third quarter) and when events and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. When the fair value is less than the carrying value of the related reporting unit, we are required to reduce the amount of goodwill through a charge to earnings. Fair value is estimated using the market approach, as well as the income approach based on discounted cash flow projections. Goodwill has been assigned to reporting units for purposes of impairment testing. ​ During 2019, goodwill decreased by approximately $2 million due to the finalization of the valuation of the assets and liabilities of an acquisition, partially offset by a net increase of approximately $1 million due to changes in foreign currency exchange rates. See “Note 3. Business Combinations and Acquisitions.” ​ Inventories ​ Inventories are stated at the lower of cost or market, with cost determined using LIFO, first-in first-out, and average costs methods for different components of inventory. Legal Costs We expense legal costs, including those legal costs incurred in connection with a loss contingency, as incurred. Net Income Per Share Attributable to Huntsman Corporation 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, ​ 2019 2018 2017 Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted income from continuing operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation ​ $ 393 ​ $ 608 ​ $ 406 Basic and diluted net income: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income attributable to Huntsman Corporation $ 562 ​ $ 337 ​ $ 636 Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares outstanding ​ ​ 228.9 ​ ​ 238.1 ​ ​ 238.4 Dilutive shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock-based awards ​ ​ 1.7 ​ ​ 3.5 ​ ​ 5.5 Total weighted average shares outstanding, including dilutive shares ​ ​ 230.6 ​ ​ 241.6 ​ ​ 243.9 ​ Additional stock-based awards of 3.0 million, 0.8 million and 0.8 million weighted average equivalent shares of stock were outstanding during the years ended December 31, 2019, 2018 and 2017, respectively. However, these stock-based awards were not included in the computation of diluted earnings per share for the respective periods mentioned because the effect would be anti-dilutive. Other Noncurrent Assets 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. Principles of Consolidation 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 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: ​ Buildings and equipment 5 - 50 years Plant and equipment 3 - 30 years Furniture, fixtures and leasehold improvements 5 - 20 years ​ Interest expense capitalized as part of plant and equipment was $4 million, $4 million and $9 million for the years ended December 31, 2019, 2018 and 2017, respectively. 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. Reclassifications ​ Certain amounts in the consolidated financial statements for prior periods have been reclassified to conform with the current presentation. These reclassifications were to record the assets and liabilities of our Chemical Intermediates Businesses as held for sale and its results of operations as discontinued operations. See “Note 1. General—Recent Developments—Sale of Chemical Intermediates Businesses” as well as “Note 4. Discontinued Operations and Business Dispositions—Sale of Chemical Intermediates Businesses.” ​ Revenue Recognition ​ 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. See “Note 18. Revenue Recognition.” ​ Securitization of Accounts Receivable 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. Debt—Direct and Subsidiary Debt—A/R Programs.” Stock-Based Compensation 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. Stock-Based Compensation Plan.” Use of Estimates The preparation of financial statements in conformity with 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. ​ Accounting Pronouncements Adopted During 2019 ​ In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic 842) among entities by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The amendments in this ASU require lessees to recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. In January 2018, the FASB issued ASU No. 2018-01, Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842 Leases (Topic 842): Targeted Improvements ​ In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities ​ In August 2018, the SEC issued a final rule, SEC Final Rule Release No. 33-10532, Disclosure Update and Simplification ​ Accounting Pronouncements Pending Adoption in Future Periods ​ In August 2018, the FASB issued ASU No. 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans ​ In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

BUSINESS COMBINATIONS AND ACQUI

BUSINESS COMBINATIONS AND ACQUISITIONS	12 Months Ended
	Dec. 31, 2019
BUSINESS COMBINATIONS AND ACQUISITIONS
BUSINESS COMBINATIONS AND ACQUISITIONS	3 BUSINESS COMBINATIONS AND ACQUISITIONS Acquisition of Remaining Interest in Sasol-Huntsman Joint Venture ​ ​ 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 ​ 2017 Net income attributable to Huntsman Corporation shareholders $ 562 ​ $ 337 ​ $ 636 ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ $ 636 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 ​ 2018 ​ 2017 Net income attributable to Huntsman International shareholders $ 551 ​ $ 323 ​ $ 629 ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ $ 629 ​ Acquisition of Demilec ​ On April 23, 2018, we acquired 100% of the outstanding equity interests of Demilec for approximately $353 million, including working capital adjustments, in an all-cash transaction, which was funded from our Prior Credit Facility and our U.S. A/R Program. Demilec is a leading North American manufacturer and distributor of spray polyurethane foam formulations for residential and commercial applications. The acquired business was integrated into our Polyurethanes segment. Transaction costs charged to expense related to this acquisition were approximately $5 million in 2018 and were recorded in other operating expense (income), net in our consolidated statements of operations. The Demilec Acquisition was aligned with our stated strategy to grow our downstream polyurethanes business and leverage our global platform to expand Demilec’s portfolio of spray polyurethane foam formulations into international markets. ​ 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 in Q2 2018 ​ $ 357 Purchase price adjustment received in Q3 2018 ​ ​ (4) Net acquisition cost ​ $ 353 ​ ​ ​ ​ Cash ​ $ 1 Accounts receivable ​ ​ 31 Inventories ​ ​ 23 Prepaid expenses and other current assets ​ ​ 1 Property, plant and equipment, net ​ ​ 21 Intangible assets ​ ​ 177 Goodwill ​ ​ 140 Accounts payable ​ ​ (16) Accrued liabilities ​ ​ (3) Deferred income taxes ​ ​ (22) Other noncurrent liabilities ​ ​ — Total fair value of net assets acquired ​ $ 353 ​ As a result of a preliminary valuation of the assets and liabilities, reallocations were made during 2018 in certain property, plant and equipment, intangible asset, goodwill and deferred tax balances. As a result of the finalization of the valuation of the assets and liabilities, additional reallocations were made in 2019 in certain goodwill, other noncurrent liabilities and deferred tax balances. 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 quarter of 2018, we received $4 million related to the settlement of certain purchase price adjustments. The goodwill recognized is attributable primarily to projected future profitable growth, penetration into downstream markets and synergies. ​ 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, 2017, the following estimated pro forma revenues, net income, net income attributable to Huntsman Corporation and Huntsman International and income per share for Huntsman Corporation would have been reported (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ Pro Forma (Unaudited) ​ Year ended December 31, ​ 2018 ​ 2017 Revenues $ 7,662 ​ $ 7,010 Net income ​ 639 ​ ​ 728 Net income attributable to Huntsman Corporation ​ 326 ​ ​ 623 ​ ​ ​ ​ ​ ​ ​ ​ Pro Forma (Unaudited) ​ Year ended December 31, ​ 2018 ​ 2017 Revenues $ 7,662 ​ $ 7,010 Net income ​ 625 ​ ​ 721 Net income attributable to Huntsman International ​ 312 ​ ​ 616 ​

DISCONTINUED OPERATIONS AND BUS

DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS	12 Months Ended
	Dec. 31, 2019
DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS
DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS	4. DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS Sale of Chemical Intermediates Businesses On January 3, 2020, we completed the sale of our Chemical Intermediates Businesses to Indorama in a transaction valued at approximately $2 billion, comprising a cash purchase price of approximately $1.93 billion, which includes estimated adjustments to the purchase price for working capital, plus the transfer of approximately $72 million in net underfunded pension and other post-employment benefit liabilities. The final purchase price is subject to customary post-closing adjustments. The net after tax cash proceeds are expected to be approximately $1.6 billion. Beginning in the third quarter of 2019, we reported the assets and liabilities of our Chemical Intermediates Businesses as held for sale and reported its results of operations as discontinued operations. Certain amounts for prior periods have similarly been retrospectively reflected for all periods presented. In connection with this sale, we entered into long-term supply agreements with Indorama for certain raw materials at market prices supplied by the Chemical Intermediates Businesses. ​ 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 are classified as held for sale in our consolidated balance sheets (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ ​ 2019 2018 Carrying amounts of major classes of assets held for sale: ​ ​ ​ ​ ​ ​ Accounts receivable ​ $ 145 ​ $ 89 Inventories ​ ​ 105 ​ ​ 134 Other current assets ​ ​ — ​ ​ 9 Total current assets ​ ​ ​ ​ ​ 232 Property, plant and equipment, net ​ ​ 720 ​ ​ 711 Operating lease right-of-use assets ​ ​ 69 ​ ​ — Deferred income taxes ​ ​ 4 ​ ​ — Other noncurrent assets ​ ​ 165 ​ ​ 166 Total noncurrent assets ​ ​ ​ ​ ​ 877 Total assets held for sale(1) ​ $ 1,208 ​ $ 1,109 Carrying amounts of major classes of liabilities held for sale: ​ ​ ​ ​ ​ ​ Accounts payable ​ $ 152 ​ $ 168 Accrued liabilities ​ ​ 26 ​ ​ 57 Current operating lease liabilities ​ ​ 20 ​ ​ — Total current liabilities ​ ​ ​ ​ ​ 225 Deferred income taxes ​ ​ 135 ​ ​ 159 Noncurrent operating lease liabilities ​ ​ 51 ​ ​ — Other noncurrent liabilities ​ ​ 128 ​ ​ 124 Total noncurrent liabilities ​ ​ ​ ​ ​ 283 Total liabilities held for sale(1) ​ $ 512 ​ $ 508 (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. ​ 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): ​ Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 ​ 2018 ​ 2017 Major line items constituting pretax income of discontinued operations(1): ​ ​ ​ ​ ​ ​ ​ ​ Trade sales, services and fees, net(2) $ 1,545 ​ $ 3,923 ​ $ 3,747 Cost of goods sold(2) ​ 1,287 ​ ​ 2,847 ​ ​ 3,198 Other expense items, net that are not major ​ 54 ​ ​ 332 ​ ​ 208 Income from discontinued operations before income taxes ​ 204 ​ ​ 744 ​ ​ 341 Income tax expense ​ (35) ​ ​ (86) ​ ​ (111) Loss on disposal ​ — ​ ​ (427) ​ ​ — Valuation allowance ​ — ​ ​ (270) ​ ​ — Income (loss) from discontinued operations, net of tax ​ 169 ​ ​ (39) ​ ​ 230 Net income attributable to noncontrolling interests ​ — ​ ​ (6) ​ ​ (10) Net income (loss) attributable to discontinued operations $ 169 ​ $ (45) ​ $ 220 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 ​ 2018 ​ 2017 Major line items constituting pretax income of discontinued operations(1): ​ ​ ​ ​ ​ ​ ​ ​ Trade sales, services and fees, net(2) $ 1,545 ​ $ 3,923 ​ $ 3,747 Cost of goods sold(2) ​ 1,287 ​ ​ 2,847 ​ ​ 3,201 Other expense items, net that are not major ​ 54 ​ ​ 332 ​ ​ 208 Income from discontinued operations before income taxes ​ 204 ​ ​ 744 ​ ​ 338 Income tax expense ​ (35) ​ ​ (86) ​ ​ (111) Loss on disposal ​ — ​ ​ (427) ​ ​ — Valuation allowance ​ — ​ ​ (270) ​ ​ — Income (loss) from discontinued operations, net of tax ​ 169 ​ ​ (39) ​ ​ 227 Net income attributable to noncontrolling interests ​ — ​ ​ (6) ​ ​ (10) Net income (loss) attributable to discontinued operations $ 169 ​ $ (45) ​ $ 217 (1) Discontinued operations include our Chemical Intermediates Businesses, our Australian styrenics operations and our North American polymers and base chemicals operations 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. ​ (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, we separated the P&A Business and conducted an IPO of ordinary shares of Venator, formerly a wholly-owned subsidiary of Huntsman. Additionally, in December 2017, we conducted a secondary offering of Venator ordinary shares. All of such ordinary shares were sold by Huntsman, and Venator did not receive any proceeds from the offerings. ​ On January 3, 2018, the underwriters purchased an additional 1,948,955 Venator ordinary shares pursuant to their over-allotment option, which reduced Huntsman’s ownership interest in Venator to approximately 53%. Beginning in the third quarter of 2017, we reported the results of operations of Venator as discontinued operations. ​ On December 3, 2018, we sold an aggregate of 4,334,389, or 4%, of Venator ordinary shares to Bank of America N.A. at a price determined based on the average of the daily volume weighted average price of Venator ordinary shares over an agreed period (the “Forward Swap”). Over this agreed period, we received aggregate proceeds of $19 million, $16 million of which was received in the first quarter of 2019. Following this transaction, we retained approximately 49% ownership in Venator and this transaction allowed us to deconsolidate Venator beginning in December 2018, and thus we began accounting for our remaining interest in Venator as an equity method investment and elected the fair value option to account for our equity method investment in Venator. ​ Although we intend to monetize our remaining 49% ownership in Venator, our ability to sell our ordinary shares of Venator at a reasonable price is dependent upon the prevailing market value of Venator common stock. The depressed Venator stock price inhibits our ability to sell our remaining shares of Venator at a reasonable price, which could continue for more than twelve months. Therefore, in December 2018, our equity method investment in Venator did not meet the held for sale criteria and our equity method investment in Venator was recorded in continuing operations. ​ During the first quarter of 2019, we recorded a gain of $1 million to record the Forward Swap at fair value. Additionally, for year ended December 31, 2019, we recorded a loss of $19 million to record our investment in Venator at fair value. These gains and losses were recorded in “Fair value adjustments to Venator investment” on our consolidated statements of operations.

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2019
INVENTORIES
INVENTORIES	5. INVENTORIES Inventories consisted of the following (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 2018 Raw materials and supplies ​ $ 175 ​ $ 191 Work in progress ​ ​ 49 ​ ​ 51 Finished goods ​ ​ 718 ​ ​ 798 Total ​ ​ 942 ​ ​ 1,040 LIFO reserves ​ ​ (28) ​ ​ (40) Net inventories ​ $ 914 ​ $ 1,000 ​ For December 31, 2019 and 2018, approximately 9% and 6% of inventories were recorded using the LIFO cost method, respectively.

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT	6. PROPERTY, PLANT AND EQUIPMENT The cost and accumulated depreciation of property, plant and equipment were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Land ​ $ 103 ​ $ 105 Buildings ​ 605 ​ 602 Plant and equipment ​ 4,695 ​ 4,550 Construction in progress ​ 285 ​ 249 Total ​ 5,688 ​ 5,506 Less accumulated depreciation ​ (3,305) ​ (3,153) Net ​ $ 2,383 ​ $ 2,353 ​ Depreciation expense for 2019, 2018 and 2017 was $245 million, $239 million and $226 million, respectively. Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Land ​ $ 103 ​ $ 105 Buildings ​ 605 ​ 602 Plant and equipment ​ 4,749 ​ 4,604 Construction in progress ​ 285 ​ 249 Total ​ 5,742 ​ 5,560 Less accumulated depreciation ​ (3,359) ​ (3,207) Net ​ $ 2,383 ​ $ 2,353 ​ Depreciation expense for 2019, 2018 and 2017 was $245 million, $236 million and $217 million, respectively.

INVESTMENT IN UNCONSOLIDATED AF

INVESTMENT IN UNCONSOLIDATED AFFILIATES	12 Months Ended
	Dec. 31, 2019
INVESTMENT IN UNCONSOLIDATED AFFILIATES
INVESTMENT IN UNCONSOLIDATED AFFILIATES	7. INVESTMENT IN UNCONSOLIDATED AFFILIATES Our ownership percentage and investment in unconsolidated affiliates were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Equity Method: ​ ​ ​ ​ ​ ​ Venator Materials PLC (49%)(1) ​ $ 200 ​ $ 219 BASF Huntsman Shanghai Isocyanate Investment BV (50%)(2) ​ ​ 112 ​ ​ 120 Nanjing Jinling Huntsman New Material Co., Ltd. (49%) ​ 196 ​ 163 Jurong Ningwu New Material Development Co., Ltd. (30%) ​ 27 ​ 24 Total investments ​ $ 535 ​ $ 526 (1) We account for our remaining investment in Venator as an equity method investment using the fair value option. For more information see “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator.” ​ (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. ​ Summarized Financial Information of Unconsolidated Affiliates ​ Summarized financial information of our unconsolidated affiliates as of December 31, 2019 and 2018 and for the years ended December 31, 2019, 2018 and 2017 is as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Current assets ​ $ 1,439 ​ $ 1,548 Non-current assets ​ ​ 2,436 ​ ​ 2,444 Current liabilities ​ ​ 688 ​ ​ 781 Non-current liabilities ​ 1,614 ​ 1,683 Noncontrolling interests ​ 7 ​ 8 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019(1) 2018(1) 2017 Revenues ​ $ 4,025 ​ $ 2,181 ​ $ 1,109 Gross profit ​ 454 ​ ​ 221 ​ ​ 112 Income from continuing operations ​ 99 ​ ​ 124 ​ ​ 34 Net income ​ ​ 99 ​ ​ 124 ​ ​ 34 (1) We began accounting for our investment in Venator as an equity method investment on December 3, 2018. Therefore, the summarized financial data only includes information for Venator for the year ended December 31, 2019 and the period from December 3, 2018 through December 31, 2018.

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	12 Months Ended
	Dec. 31, 2019
VARIABLE INTEREST ENTITIES
VARIABLE INTEREST ENTITIES	8. VARIABLE INTEREST ENTITIES 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 sufficient to permit the joint venture to finance its activities without additional financial support. By virtue of the operating agreement with this joint venture, we purchase a majority of the output, absorb a majority of the operating costs and provide a majority of the additional funding. ● 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. This joint venture manufactured products for our Performance Products segment. Sasol-Huntsman used our technology and expertise, and we bore a disproportionate amount of risk of loss due to a related-party loan to Sasol-Huntsman for which we bore the default risk. On September 30, 2019, we acquired the 50% noncontrolling interest that we did not own in the Sasol-Huntsman. As such, as of September 30, 2019, this joint venture was no longer accounted for as a variable interest entity. See “Note 3. Business Combinations and Acquisitions.” ​ Creditors of these entities have no recourse to our general credit. See “Note 15. Debt—Direct and Subsidiary Debt.” As the primary beneficiary of these variable interest entities at December 31, 2019, the joint ventures’ assets, liabilities and results of operations are included in our consolidated financial statements. 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, 2019 and 2018 (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019(1) 2018 Current assets ​ $ 50 ​ $ 92 Property, plant and equipment, net ​ ​ 180 ​ ​ 265 Operating lease right-of-use assets ​ ​ 16 ​ ​ — Other noncurrent assets ​ ​ 132 ​ ​ 136 Deferred income taxes ​ ​ 30 ​ ​ 32 Intangible assets ​ ​ — ​ ​ 10 Goodwill ​ ​ — ​ ​ 14 Total assets ​ $ 408 ​ $ 549 Current liabilities ​ $ 151 ​ $ 178 Long-term debt ​ ​ 29 ​ ​ 61 Deferred income taxes ​ ​ — ​ ​ 11 Noncurrent operating lease liabilities ​ ​ 11 ​ ​ — Other noncurrent liabilities ​ ​ 87 ​ ​ 97 Total liabilities ​ $ 278 ​ $ 347 (1) ​ 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, ​ 2019(1) 2018 2017 Revenues ​ $ 95 ​ $ 154 ​ $ 132 Income from continuing operations before income taxes ​ 17 ​ 40 ​ 25 Net cash provided by operating activities ​ 81 ​ 65 ​ 51 (1) 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.

LEASES

LEASES	12 Months Ended
	Dec. 31, 2019
LEASES
LEASES	9. LEASES On January 1, 2019, we adopted the new lease standard using the optional transition method provided under ASU No. 2018-11, which allowed us to initially apply the amendments of the new lease standard at the adoption date. Upon adoption of the new lease standard, we elected the package of three practical expedient permitted under the transition guidance within the new lease standard, which among other things, allowed us to carry forward the historical lease classification on existing leases at adoption. In addition, we elected the practical expedient related to land easements, which allowed us to carry forward our accounting treatment for land easements on existing agreements. We also elected the hindsight practical expedient to determine the lease term for existing leases. ​ 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 readily determinable for our leases. The incremental borrowing rates are determined on a collateralized basis and vary from lease to lease depending on the country where the leased asset exists and the term of the lease arrangement. We combine lease components with non-lease components and account for them as a single lease component for all classes of underlying assets, except for leases of manufacturing and research facilities and administrative offices. For these assets, non-lease components are separated from lease components and accounted for as normal operating expenses. ​ We primarily lease manufacturing and research facilities, administrative offices, land, tanks, railcars and equipment. Leases with an initial term of 12 months or less are not recognized on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. Our variable lease cost was nil for the year ended December 31, 2019. Our leases have remaining lives from one month to 38 years. Certain lease agreements include one or more options to renew, at our discretion, with renewal terms that can extend the lease term by approximately one year to 30 years or more. Renewal and termination options that we are reasonably certain to exercise have been included in the calculation of the lease right-of-use assets and lease liabilities. None of our lease agreements contain material residual value guarantees or material restrictions or covenants. ​ The components of operating lease expense, cash flows and supplemental noncash information from continuing operations are as follows (dollars in millions): ​ ​ ​ ​ ​ Year ended ​ December 31, 2019 Operating lease expense: ​ ​ Cost of goods sold $ 35 Selling, general and administrative ​ 15 Research and development ​ 6 Total operating lease expense(1)(2) $ 56 ​ ​ ​ Cash paid for amounts included in the measurement of lease liabilities: ​ ​ Operating cash flows from operating leases $ 53 ​ ​ ​ Supplemental noncash information: ​ ​ Leased assets obtained in exchange for new operating lease liabilities $ 416 (1) Total operating lease expense includes short-term lease expense of approximately $1 million for the year ended December 31, 2019. (2) Total operating lease expense for the years ended December 31, 2018 and 2017 were $55 million and $60 million, respectively. ​ The weighted-average lease term and discount rate for our operating leases from continuing operations are as follows: ​ ​ ​ Weighted-average remaining lease term 11 years Weighted-average discount rate 4.1% ​ ​ ​ ​ Year ending December 31, ​ ​ 2020 $ 58 2021 ​ 57 2022 ​ 52 2023 ​ 48 2024 ​ 45 Thereafter ​ 268 Total lease payments ​ 528 Less imputed interest ​ (102) Total $ 426 ​ Future minimum lease payments under operating leases from continuing operations as of December 31, 2018 are as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ ​ 2019 $ 37 2020 ​ 33 2021 ​ 36 2022 ​ 34 2023 ​ 32 Thereafter ​ 224 ​ $ 396 ​ As of December 31, 2019, we have additional leases, primarily for leases of manufacturing facilities, that have not yet commenced of approximately $43 million. These leases will commence beginning in 2020 through 2021 with lease terms of up to 20 years.

INTANGIBLE ASSETS

INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2019
INTANGIBLE ASSETS
INTANGIBLE ASSETS	10. INTANGIBLE ASSETS The gross carrying amount and accumulated amortization of intangible assets were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ Carrying Accumulated ​ Carrying Accumulated ​ ​ ​ Amount ​ Amortization ​ Net ​ Amount ​ Amortization ​ Net Patents, trademarks and technology ​ $ 314 ​ $ 230 ​ $ 84 ​ $ 293 ​ $ 209 ​ $ 84 Licenses and other agreements ​ 140 ​ 48 ​ 92 ​ 134 ​ 29 ​ 105 Non-compete agreements ​ 3 ​ 2 ​ 1 ​ 3 ​ 2 ​ 1 Other intangibles ​ 61 ​ 41 ​ 20 ​ 64 ​ 41 ​ 23 Total ​ $ 518 ​ $ 321 ​ $ 197 ​ $ 494 ​ $ 281 ​ $ 213 ​ Amortization expense was $16 million, $6 million and $3 million for the years ended December 31, 2019, 2018 and 2017, respectively. Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ Carrying Accumulated ​ Carrying Accumulated ​ ​ ​ Amount ​ Amortization ​ Net ​ Amount ​ Amortization ​ Net Patents, trademarks and technology ​ $ 314 ​ $ 230 ​ $ 84 ​ $ 293 ​ $ 209 ​ $ 84 Licenses and other agreements ​ 140 ​ 48 ​ 92 ​ 134 ​ 29 ​ 105 Non-compete agreements ​ 3 ​ 2 ​ 1 ​ 3 ​ 2 ​ 1 Other intangibles ​ 70 ​ 50 ​ 20 ​ 72 ​ 49 ​ 23 Total ​ $ 527 ​ $ 330 ​ $ 197 ​ $ 502 ​ $ 289 ​ $ 213 ​ Amortization expense was $16 million, $6 million and $4 million for the years ended December 31, 2019, 2018 and 2017, respectively. Our and Huntsman International’s estimated future amortization expense for intangible assets over the next five years is as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ 2020 $ 16 2021 ​ ​ 15 2022 ​ ​ 15 2023 ​ ​ 15 2024 ​ ​ 15 ​

OTHER NONCURRENT ASSETS

OTHER NONCURRENT ASSETS	12 Months Ended
	Dec. 31, 2019
OTHER NONCURRENT ASSETS
OTHER NONCURRENT ASSETS	11. OTHER NONCURRENT ASSETS Other noncurrent assets consisted of the following (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Capitalized turnaround costs, net ​ $ 223 ​ $ 172 Catalyst assets, net ​ 24 ​ 26 Other ​ 205 ​ 195 Total ​ $ 452 ​ $ 393 ​ Amortization expense of catalyst assets for the years ended December 31, 2019, 2018 and 2017 was $9 million, $10 million and $7 million, respectively.

ACCRUED LIABILITIES

ACCRUED LIABILITIES	12 Months Ended
	Dec. 31, 2019
ACCRUED LIABILITIES
ACCRUED LIABILITIES	12. ACCRUED LIABILITIES Accrued liabilities consisted of the following (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Payroll and related accruals ​ $ 100 ​ $ 126 Taxes other than income taxes ​ 64 ​ 44 Income taxes ​ 59 ​ 86 Volume and rebate accruals ​ 53 ​ 59 Other miscellaneous accruals ​ 144 ​ 182 Total ​ $ 420 ​ $ 497 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Payroll and related accruals ​ $ 100 ​ $ 126 Taxes other than income taxes ​ 64 ​ 44 Income taxes ​ 59 ​ 86 Volume and rebate accruals ​ 53 ​ 59 Other miscellaneous accruals ​ 141 ​ 179 Total ​ $ 417 ​ $ 494 ​

RESTRUCTURING, IMPAIRMENT AND P

RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING COSTS	12 Months Ended
	Dec. 31, 2019
RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING COSTS
RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING COSTS	13. RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING (CREDITS) COSTS 2019 Restructuring Activities ​ In September 2011, we implemented the Textile Effects Restructuring Plan, including the closure of our production facilities and business support offices in Basel, Switzerland. In connection with this plan, in July 2019, we sold the production facilities and business support offices in Basel. Accordingly, during the third quarter of 2019, we received proceeds of $49 million related to this sale and recognized a corresponding gain on disposal of assets of $49 million. ​ 2018 Restructuring Activities ​ In September 2011, we implemented the Textile Effects Restructuring Plan. In connection with this plan, we recorded restructuring reserves covering, among other things, a non-cancelable long-term service agreement. In the fourth quarter of 2018, we settled this agreement in exchange for the payment of $10 million, $8 million of which was paid in 2019 and $2 million will be paid in 2023. In connection with this settlement, we reversed the related restructuring reserve and recorded a net credit of $29 million in the fourth quarter of 2018. In addition, during 2018, we recorded a credit of $4 million primarily related to a gain on the sale of land at the Basel, Switzerland site. ​ Our Corporate and other segment recorded restructuring expense of $15 million in 2018 related to corporate initiatives. ​ 2017 Restructuring Activities In September 2011, we implemented the Textile Effects Restructuring Plan. In connection with this restructuring plan, during the year ended December 31, 2017, our Textile Effects segment recorded restructuring expense of approximately $6 million associated with this initiative, including $2 million for non-cancelable long-term contract termination costs and $4 million for decommissioning. ​ During the first quarter of 2017, we implemented a restructuring program to improve competitiveness in our Textile Effects segment. In connection with this restructuring program, we recorded restructuring expense of $7 million in the year ended December 31, 2017 related primarily to workforce reductions.

OTHER NONCURRENT LIABILITIES

OTHER NONCURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2019
OTHER NONCURRENT LIABILITIES
OTHER NONCURRENT LIABILITIES	14. OTHER NONCURRENT LIABILITIES Other noncurrent liabilities consisted of the following (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Pension liabilities ​ $ 650 ​ $ 664 Other postretirement benefits ​ 55 ​ 54 Employee benefit accrual ​ 38 ​ 32 Other ​ 155 ​ 199 Total ​ $ 898 ​ $ 949 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 2018 Pension liabilities $ 650 $ 664 Other postretirement benefits ​ 55 ​ 54 Employee benefit accrual ​ 38 ​ 32 Other ​ 147 ​ 187 Total ​ $ 890 ​ $ 937 ​

DEBT

DEBT	12 Months Ended
	Dec. 31, 2019
DEBT
DEBT	15. DEBT Outstanding debt, net of debt issuance costs, of consolidated entities consisted of the following (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 ​ 2018 Senior Credit Facilities: ​ ​ ​ ​ ​ Revolving facility ​ $ 40 ​ $ 50 Amounts outstanding under A/R programs ​ ​ 167 ​ ​ 252 Term loan ​ ​ 103 ​ ​ — Senior notes ​ ​ 1,963 ​ ​ 1,892 Variable interest entities ​ ​ 65 ​ ​ 86 Other ​ ​ 51 ​ ​ 40 Total debt ​ $ 2,389 ​ $ 2,320 Total current portion of debt ​ $ 212 ​ $ 96 Long-term portion of debt ​ ​ 2,177 ​ ​ 2,224 Total debt ​ $ 2,389 ​ $ 2,320 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 ​ 2018 Senior Credit Facilities: ​ ​ ​ ​ ​ ​ Revolving facility ​ $ 40 ​ $ 50 Amounts outstanding under A/R programs ​ ​ 167 ​ ​ 252 Term loan ​ ​ 103 ​ ​ — Senior notes ​ ​ 1,963 ​ ​ 1,892 Variable interest entities ​ ​ 65 ​ ​ 86 Other ​ ​ 51 ​ ​ 40 Total debt, excluding debt to affiliates ​ $ 2,389 ​ $ 2,320 Total current portion of debt ​ $ 212 ​ $ 96 Long-term portion of debt ​ ​ 2,177 ​ ​ 2,224 Total debt, excluding debt to affiliates ​ $ 2,389 ​ $ 2,320 Notes payable to affiliates-current ​ ​ 100 ​ ​ 100 Notes payable to affiliates-noncurrent ​ ​ 280 ​ ​ 488 Total debt ​ $ 2,769 ​ $ 2,908 ​ Direct and Subsidiary Debt Huntsman Corporation’s direct debt and guarantee obligations consist of a guarantee of certain indebtedness incurred from time to time to finance certain insurance premiums. Substantially all of our other debt, including the facilities described below, has been incurred by our subsidiaries (primarily Huntsman International); Huntsman Corporation is not a guarantor of such subsidiary debt. Certain of our subsidiaries are designated as nonguarantor subsidiaries and have third-party debt agreements. These debt agreements contain certain restrictions with regard to dividends, distributions, loans or advances. In certain circumstances, the consent of a third party would be required prior to the transfer of any cash or assets from these subsidiaries to us. Debt Issuance Costs We record debt issuance costs related to a debt liability on the balance sheet as a reduction in the face amount of that debt liability. As of December 31, 2019 and 2018, the amount of debt issuance costs directly reducing the debt liability was $11 million and $8 million, respectively. We record the amortization of debt issuance costs as interest expense. Revolving Credit Facility On May 21, 2018, Huntsman International entered into the 2018 Revolving Credit Facility. Borrowings under the 2018 Revolving Credit Facility will bear interest at the rates specified in the credit agreement governing the 2018 Revolving Credit Facility, which will vary based on the type of loan and Huntsman International’s debt ratings. Unless earlier terminated, the 2018 Revolving Credit Facility will mature in May 2023. Huntsman International may increase the 2018 Revolving Credit Facility commitments up to an additional $500 million, subject to the satisfaction of certain conditions. ​ In connection with entering into the 2018 Revolving Credit Facility, Huntsman International terminated all commitments and repaid all obligations under the Prior Credit Facility. In addition, we recognized a loss of early extinguishment of debt of $3 million. Upon the termination of the Prior Credit Facility, all guarantees of the obligations under the Prior Credit Facility were terminated, and all liens granted under the Prior Credit Facility were released. As of December 31, 2019, our 2018 Revolving Credit Facility was as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unamortized ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Discounts and ​ ​ ​ ​ ​ ​ ​ ​ Committed ​ Principal ​ Debt Issuance ​ Carrying ​ ​ ​ ​ Facility ​ Amount Outstanding Costs Value Interest Rate(2) Maturity 2018 Revolving Credit Facility ​ $ 1,200 ​ $ 40 (1) $ — (1) $ 40 (1) USD LIBOR plus 1.50% ​ 2023 (1) On December 31, 2019, we had an additional $7 million (U.S. dollar equivalents) of letters of credit and bank guarantees issued and outstanding under our 2018 Revolving Credit Facility. ​ (2) Interest rates on borrowings under the 2018 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, 2019 was 1.50% above LIBOR. ​ Term Loan Credit Facility ​ On September 24, 2019, Huntsman International entered into the 2019 Term Loan, pursuant to which Huntsman International borrowed an aggregate principal amount of €92 million (or $101 million equivalent). We used the net proceeds from the 2019 Term Loan to finance our acquisition of the 50% noncontrolling interest that we did not own in the Sasol-Huntsman maleic anhydride joint venture. Borrowings under the 2019 Term Loan will bear interest at an interest rate of EURIBO Rate plus 0.75%, with a EURIBO Rate floor at zero. Unless earlier terminated or prepaid in accordance with the credit agreement governing the 2019 Term Loan, the 2019 Term Loan will mature on September 22, 2020. The 2019 Term Loan is subject to substantially the same terms and conditions as the 2018 Revolving Credit Facility. ​ 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. ​ On April 18, 2019, we entered into amendments to the EU A/R Program (the “European Amendment”) and the U.S. A/R Program (the “U.S. Amendment”). The European Amendment, among other things, extended the scheduled commitment termination date of the loan facility to April 2022, reduced the facility maximum funding availability from €150 million to €100 million and made certain other amendments. The U.S. Amendment, among other things, extended the scheduled commitment termination date of the loan facility to April 2022 and made certain other amendments. ​ Information regarding our A/R Programs as of December 31, 2019 was as follows (monetary amounts in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Maximum Funding Amount ​ Facility Maturity Availability(1) Outstanding Interest Rate(2) U.S. A/R Program April 2022 ​ $ 250 ​ $ 100 (3) Applicable rate plus 0.90% EU A/R Program April 2022 ​ € 100 ​ € 60 Applicable rate plus 1.30% ​ ​ ​ ​ ​ (or approximately $112) ​ ​ (or approximately $67) ​ ​ (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) 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, 2019, we had approximately $5 million (U.S. dollar equivalents) of letters of credit issued and outstanding under our U.S. A/R Program. In December 2019, we entered into amendments to the U.S. A/R program and the EU A/R program. The European amendment allowed the removal of pledged obligors related to the Chemical Intermediates Businesses sold to Indorama. The U.S. amendment allowed the removal of pledged obligors related to the Chemical Intermediates Businesses sold to Indorama as well as reduced the maximum funding capacity from $250 million to $150 million upon completion of the sale on January 3, 2020. ​ As of December 31, 2019 and December 31, 2018, $221 million and $341 million, respectively, of accounts receivable were pledged as collateral under our A/R Programs. ​ Notes As of December 31, 2019, we had outstanding the following notes (monetary amounts in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unamortized ​ ​ ​ ​ ​ ​ ​ ​ Premiums, ​ ​ ​ ​ ​ ​ ​ ​ Discounts ​ ​ ​ ​ ​ ​ ​ ​ and Debt Notes Maturity Interest Rate Amount Outstanding Issuance Costs 2021 Senior Notes April 2021 5.125 % €445 (€445 carrying value $(496)) ​ $ — 2022 Senior Notes November 2022 5.125 % $400 ($398 carrying value) ​ ​ (2) 2025 Senior Notes April 2025 4.250 % €300 (€298 carrying value $(333)) ​ ​ (2) 2029 Senior Notes February 2029 4.500 % $750 ($736 carrying value) ​ ​ (14) ​ The 2021, 2022, 2025 and 2029 Senior Notes are general unsecured senior obligations of Huntsman International. The indentures impose certain limitations on the ability of Huntsman International and its subsidiaries to, among other things, incur additional indebtedness secured by any principal properties, incur indebtedness of nonguarantor subsidiaries, enter into sale and leaseback transactions with respect to any principal properties and consolidate or merge with or into any other person or lease, sell or transfer all or substantially all of its properties and assets. Upon the occurrence of certain change of control events, holders of the 2021, 2022, 2025 and 2029 Senior Notes will have the right to require that Huntsman International purchase all or a portion of such holder’s notes in cash at a purchase price equal to 101% of the principal amount thereof plus accrued and unpaid interest to the date of repurchase. ​ On March 13, 2019, Huntsman International completed a $750 million offering of its 4.50% senior notes due 2029 (“2029 Senior Notes”). On March 27, 2019, Huntsman International applied the net proceeds of the offering of the 2029 Senior Notes to redeem in full $650 million in aggregate principal amount of its 4.875% senior notes due 2020 (“2020 Senior Notes”) and also paid associated costs and accrued interest of $21 million and $12 million, respectively. In addition, we recognized a loss on early extinguishment of debt of $23 million. ​ The 2029 Senior Notes bear interest at 4.50% per year, payable semi-annually on May 1 and November 1, and will mature on May 1, 2029. Huntsman International may redeem the 2029 Senior Notes in whole or in part at any time prior to February 1, 2029 at a price equal to 100% of the principal amount thereof plus a “make-whole” premium and accrued and unpaid interest. Huntsman International may redeem the 2029 Senior Notes at any time, in whole or from time to time in part, on or after February 1, 2029 at a redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest. Variable Interest Entity Debt As of December 31, 2019, AAC, our consolidated 50%-owned joint venture, had $65 million outstanding under its loan commitments and debt financing arrangements. As of December 31, 2019, we have $36 million classified as current debt and $29 million as long-term debt on our consolidated balance sheets. We do not guarantee these loan commitments, and AAC is not a guarantor of any of our other debt obligations. ​ Note Payable from Huntsman International to Huntsman Corporation As of December 31, 2019, we have a loan of $380 million to our subsidiary, Huntsman International. The Intercompany Note is unsecured and $100 million of the outstanding amount is classified as current as of December 31, 2019 on our consolidated balance sheets. As of December 31, 2019, under the terms of the Intercompany Note, Huntsman International promises to pay us interest on the unpaid principal amount at a rate per annum based on the previous monthly average borrowing rate obtained under our U.S. A/R Program, less 10 basis points (provided that the rate shall not exceed an amount that is 25 basis points less than the monthly average borrowing rate obtained for the U.S. LIBOR-based borrowings under our 2018 Revolving Credit Facility). Compliance With Covenants ​ Our 2018 Revolving Credit Facility contains a financial covenant regarding the leverage ratio of Huntsman International and its subsidiaries. The 2018 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 cured or waived within any applicable cure periods, in addition to other remedies that may be available to the lenders, the obligations under the 2018 Revolving Credit Facility may be accelerated. ​ 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 2018 Revolving Credit Facility, which could require us to pay off the balance of the 2018 Revolving Credit Facility in full and could result in the loss of our 2018 Revolving Credit Facility. ​ We believe that we are in compliance with the covenants governing our material debt instruments, including our 2018 Revolving Credit Facility, our A/R Programs and our notes. ​ Maturities The scheduled maturities of our debt (excluding debt to affiliates) by year as of December 31, 2019 are as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ ​ 2020 ​ $ 212 2021 ​ 522 2022 ​ 570 2023 ​ 1 2024 ​ 2 Thereafter ​ 1,082 ​ ​ $ 2,389 ​

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	12 Months Ended
	Dec. 31, 2019
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	16. 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. In connection with the December 3, 2018 sale of Venator ordinary shares to Bank of America N.A., we recorded a forward swap. See “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator” and “Note 17. Fair Value.” Interest Rate Risk 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 purchase interest rate swaps and/or other derivative instruments to reduce the impact of changes in interest rates on our floating-rate exposures. Under interest rate swaps, we agree with other parties to exchange, at specified intervals, the difference between fixed-rate and floating-rate interest amounts calculated by reference to an agreed notional principal amount. On January 9, 2019, we entered into a six-year $17 million notional value interest rate hedge with a fixed rate of 2.66%. This swap was designated as a cash flow hedge and the effective portion of the changes in the fair value of the swap was recorded in other comprehensive (loss) income. In November 2019, we terminated this swap and paid $1 million to our counterparties. This $1 million settlement will be amortized from accumulated other comprehensive loss to earnings. ​ During 2019, there were no other reclassifications from accumulated other comprehensive loss to earnings. The actual amount that will be reclassified to earnings over the next twelve months may vary from this amount due to changing market conditions. We would be exposed to credit losses in the event of nonperformance by a counterparty to our derivative financial instruments. We anticipate, however, that the counterparties will be able to fully satisfy their obligations under the contracts. Market risk arises from changes in interest rates. ​ Foreign Exchange Rate Risk 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 be managed from time to time through financial market transactions, principally through the purchase of spot or forward foreign exchange contracts (generally with maturities of three months or less). We do not hedge our currency exposures in a manner that would eliminate the effect of changes in exchange rates on our cash flows and earnings. As of December 31, 2019 and 2018, we had approximately $135 million and $151 million, respectively, notional amount (in U.S. dollar equivalents) outstanding in foreign currency contracts with a term of approximately one month. In November 2014, we entered into two five-year cross-currency interest rate contracts and one eight-year cross-currency interest rate contract to swap an aggregate notional $200 million for an aggregate notional €161 million. The swap was designated as a hedge of net investment for financial reporting purposes. In August 2017, we terminated these cross-currency interest rate contracts and received $7 million from the counterparties. 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 expected to be repaid in the foreseeable future and the designation of certain debt and swaps as net investment hedges. Foreign currency transaction gains and losses on intercompany loans that are not designated as permanent loans are recorded in earnings. Foreign currency transaction gains and losses on intercompany loans that are designated as permanent loans are recorded in other comprehensive (loss) income. From time to time, we review such designation of intercompany loans. We review our non-U.S. dollar denominated debt and derivative instruments to determine the appropriate amounts designated as hedges. As of December 31, 2019, we have designated approximately €435 million (approximately $485 million) of euro-denominated debt as a hedge of our net investment. For the years ended December 31, 2019, 2018 and 2017, the amounts recognized on the hedge of our net investment were a gain of $14 million, a gain of $35 million and a loss of $96 million, respectively, and were recorded in other comprehensive (loss) income. Commodity Prices Risk 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 generally hedge our commodity exposures.

FAIR VALUE

FAIR VALUE	12 Months Ended
	Dec. 31, 2019
FAIR VALUE
FAIR VALUE	17. FAIR VALUE The fair values of our financial instruments were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ Carrying ​ Estimated ​ Carrying ​ Estimated ​ Value Fair Value Value Fair Value Non-qualified employee benefit plan investments $ 28 ​ $ 28 ​ $ 23 ​ $ 23 Forward swap contract related to the sale of investment in Venator ​ — ​ ​ — ​ ​ 14 ​ ​ 14 Long-term debt (including current portion) ​ (2,389) ​ ​ (2,544) ​ ​ (2,320) ​ ​ (2,403) ​ 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. We elected the fair value option to account for our equity method investment in Venator post deconsolidation. The fair value of our remaining investment in Venator reported in investment in unconsolidated affiliates is obtained through market observable pricing using prevailing market prices (Level 1). See “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator.” The fair values of non-qualified employee benefit plan investments are obtained through market observable pricing using prevailing market prices. The estimated fair values of our long-term debt are based on quoted market prices for the identical liability when traded as an asset in an active market (Level 1). ​ The fair value estimates presented herein are based on pertinent information available to management as of December 31, 2019 and 2018. Although management is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since December 31, 2019, and current estimates of fair value may differ significantly from the amounts presented herein. The following assets and liabilities are measured at fair value on a recurring basis (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Amounts Using ​ ​ ​ ​ ​ Quoted prices ​ Significant other ​ Significant ​ ​ ​ ​ ​ in active markets ​ observable ​ unobservable ​ ​ December 31, ​ for identical ​ inputs ​ inputs Description 2019 assets (Level 1) (Level 2) (Level 3) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equity securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Non-qualified employee benefit plan investments ​ $ 28 ​ $ 28 ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Amounts Using ​ ​ ​ ​ ​ Quoted prices ​ Significant other ​ Significant ​ ​ ​ ​ ​ in active markets ​ observable ​ unobservable ​ ​ December 31, ​ for identical ​ inputs ​ inputs Description 2018 assets (Level 1) (Level 2) (Level 3) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equity securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Non-qualified employee benefit plan investments ​ $ 23 ​ $ 23 ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward swap contract related to the sale of investment in Venator(1) ​ ​ 14 ​ ​ — ​ ​ 14 ​ ​ — ​ ​ $ 37 ​ $ 23 ​ $ 14 ​ $ — (1) In connection with the December 3, 2018 sale of Venator ordinary shares to Bank of America N.A., we recorded a forward swap. In February 2019, we settled this forward swap and received $16 million from the counterparty. ​ During the years ended December 31, 2019 and 2018, there were no instruments measured at fair value on a recurring basis using significant unobservable inputs (Level 3), and there were no gains or losses (realized or unrealized) included in earnings for instruments categorized as Level 3 within the fair value hierarchy.

REVENUE RECOGNITION

REVENUE RECOGNITION	12 Months Ended
	Dec. 31, 2019
REVENUE RECOGNITION
REVENUE RECOGNITION	18. REVENUE RECOGNITION 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 year. The following table disaggregates our revenue by major source for the years ended December 31, 2019 and 2018 (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 and digital inks ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 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 and digital inks ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 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. ​ 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 contain variable consideration such as discounts or rebates. We allocate the transaction price to each distinct product based on their relative standalone selling price. The product price as specified on the purchase order or in the sales contract is considered the standalone selling price as it is an observable input that depicts the price as if sold to a similar customer in similar circumstances. In order to estimate the applicable variable consideration, we use historical and current trend information to estimate the amount of discounts or rebates to which customers are likely to be entitled. Historically, actual discount or rebate adjustments relative to those estimated and included when determining the transaction price have not materially differed. Payment terms vary but are generally less than one year. As our standard payment terms are less than one year, we have elected to not assess whether a contract has a significant financing component. In the normal course of business, we do not accept product returns unless the item is defective as manufactured. We establish provisions for estimated returns based on an analysis of historical experience.

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2019
EMPLOYEE BENEFIT PLANS
EMPLOYEE BENEFIT PLANS	19. EMPLOYEE BENEFIT PLANS Defined Benefit and Other Postretirement Benefit 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, the Plan formula for employees not covered by a collective bargaining agreement was converted to a cash balance design. For represented employees, participation in the cash balance design was subject to the terms of negotiated contracts. For participating employees, benefits accrued under the prior formula were converted to opening cash balance accounts. The cash balance benefit formula provides annual pay credits from 6% to 12% of eligible pay, depending on age and service, plus accrued interest. The conversion to the cash balance plan did not have a significant impact on the accrued benefit liability, the funded status or ongoing pension expense. Beginning July 1, 2014, the Huntsman Defined Benefit Pension Plan was closed to new non-union entrants and as of April 1, 2015, it was closed to new union entrants. In addition, as of January 1, 2015, Rubicon LLC closed its defined benefit plan to new entrants. Following the closure of these plans, new hires have been provided with a defined contribution plan with a non-discretionary employer contribution of 6% of pay and a company match of up to 4% of pay, for a total company contribution of up to 10% of pay. We also sponsor unfunded postretirement benefit plans other than pensions, which provide medical and life insurance benefits. Effective August 1, 2015, the post retirement benefit plans were closed to new entrants. Our postretirement benefit plans provide access to two fully insured Medicare Part D plans including prescription drug benefits affected by the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (the “Act”). We cannot determine whether the medical benefits provided by our postretirement benefit plans are actuarially equivalent to those provided by the Act. We do not collect a subsidy and our net periodic postretirement benefits cost, and related benefit obligation, do not reflect an amount associated with the subsidy. We do not subsidize the premium cost of these plans; the premiums are entirely paid by the retirees. 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, 2019 and 2018 (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ Other Postretirement Benefit Plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 ​ ​ 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 ​ $ 956 ​ $ 2,157 ​ $ 1,028 ​ $ 2,259 ​ $ 59 ​ $ — ​ $ 69 ​ $ — Service cost ​ 20 ​ 30 ​ 23 ​ 32 ​ 1 ​ — ​ 2 ​ — Interest cost ​ 41 ​ 37 ​ 39 ​ 37 ​ 3 ​ — ​ 2 ​ — Participant contributions ​ — ​ 6 ​ — ​ 5 ​ 2 ​ — ​ 2 ​ — Plan amendments ​ — ​ (9) ​ — ​ 4 ​ — ​ — ​ — ​ — Foreign currency exchange rate changes ​ — ​ 7 ​ — ​ (74) ​ — ​ — ​ — ​ — Settlements/transfers/divestitures ​ 20 ​ (2) ​ (6) ​ (3) ​ 1 ​ — ​ — ​ — Actuarial (gain) loss ​ 65 ​ 224 ​ (67) ​ (30) ​ — ​ — ​ (9) ​ — Benefits paid ​ (78) ​ (73) ​ (61) ​ (73) ​ (6) ​ — ​ (7) ​ — Benefit obligation at end of year ​ $ 1,024 ​ $ 2,377 ​ $ 956 ​ $ 2,157 ​ $ 60 ​ $ — ​ $ 59 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in plan assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value of plan assets at beginning of year ​ $ 697 ​ $ 1,751 ​ $ 747 ​ $ 1,883 ​ $ — ​ $ — ​ $ — ​ $ — Actual return on plan assets ​ 107 ​ 224 ​ (27) ​ (38) ​ — ​ — ​ — ​ — Foreign currency exchange rate changes ​ — ​ 11 ​ — ​ (62) ​ — ​ — ​ — ​ — Participant contributions ​ — ​ 6 ​ — ​ 5 ​ 2 ​ — ​ 2 ​ — Settlement/transfers/divestitures ​ ​ 19 ​ ​ (2) ​ ​ (6) ​ ​ (3) ​ ​ — ​ ​ — ​ ​ — ​ ​ — Company contributions ​ 45 ​ 43 ​ 44 ​ 39 ​ 4 ​ — ​ 5 ​ — Benefits paid ​ (78) ​ (73) ​ (61) ​ (73) ​ (6) ​ — ​ (7) ​ ​ — Fair value of plan assets at end of year ​ $ 790 ​ $ 1,960 ​ $ 697 ​ $ 1,751 ​ $ — ​ $ — ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Funded status ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value of plan assets ​ $ 790 ​ $ 1,960 ​ $ 697 ​ $ 1,751 ​ $ — ​ $ — ​ $ — ​ $ — Benefit obligation ​ 1,024 ​ 2,377 ​ 956 ​ 2,157 ​ 60 ​ — ​ 59 ​ — Accrued benefit cost ​ $ (234) ​ $ (417) ​ $ (259) ​ $ (406) ​ $ (60) ​ $ — ​ $ (59) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amounts recognized in balance sheet: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noncurrent asset ​ $ — ​ $ 10 ​ $ — ​ $ 10 ​ $ — ​ $ — ​ $ — ​ $ — Current liability ​ (5) ​ (6) ​ (5) ​ (6) ​ (5) ​ — ​ (5) ​ — Noncurrent liability ​ (229) ​ (421) ​ (254) ​ (410) ​ (55) ​ — ​ (54) ​ — Total ​ $ (234) ​ $ (417) ​ $ (259) ​ $ (406) ​ $ (60) ​ $ — ​ $ (59) ​ $ — ​ Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ Other Postretirement Benefit Plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 ​ ​ 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 ​ $ 394 ​ $ 840 ​ $ 401 ​ $ 784 ​ $ 20 ​ $ — ​ $ 21 ​ $ — Prior service credit ​ (11) ​ (32) ​ (13) ​ (27) ​ (33) ​ — ​ (38) ​ — Total ​ $ 383 ​ $ 808 ​ $ 388 ​ $ 757 ​ $ (13) ​ $ — ​ $ (17) ​ $ — ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ Other Postretirement Benefit Plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 ​ ​ 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 ​ $ 395 ​ $ 846 ​ $ 402 ​ $ 793 ​ $ 20 ​ $ — ​ $ 21 ​ $ — Prior service credit ​ (11) ​ (31) ​ (13) ​ (27) ​ (33) ​ — ​ (38) ​ — Total ​ $ 384 ​ $ 815 ​ $ 389 ​ $ 766 ​ $ (13) ​ $ — ​ $ (17) ​ $ — ​ The amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost of continuing operations during the next fiscal year are as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement ​ ​ Defined Benefit Plans ​ Benefit Plans ​ ​ ​ ​ ​ Non-U.S. ​ ​ ​ ​ Non-U.S. ​ ​ U.S. Plans ​ Plans ​ U.S. Plans ​ Plans Actuarial loss $ 28 $ 53 $ 1 $ — Prior service credit ​ (2) ​ (5) ​ (5) ​ — Total ​ $ 26 ​ $ 48 ​ $ (4) ​ $ — ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement ​ ​ Defined Benefit Plans ​ Benefit Plans ​ ​ ​ ​ ​ Non-U.S. ​ ​ ​ ​ Non-U.S. ​ ​ U.S. Plans ​ Plans ​ U.S. Plans ​ Plans Actuarial loss $ 28 $ 56 $ 1 $ — Prior service credit ​ (2) ​ (5) ​ (5) ​ — Total ​ $ 26 ​ $ 51 ​ $ (4) ​ $ — ​ Components of net periodic benefit costs of continuing operations for the years ended December 31, 2019, 2018 and 2017 were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 20 $ 23 $ 22 $ 30 $ 32 $ 33 Interest cost ​ 41 ​ 39 ​ 39 ​ 37 ​ 37 ​ 35 Expected return on plan assets ​ (53) ​ (54) ​ (48) ​ (102) ​ (109) ​ (100) Amortization of prior service credit ​ (2) ​ (2) ​ (2) ​ (4) ​ (5) ​ (5) Amortization of actuarial loss ​ 23 ​ 31 ​ 27 ​ 45 ​ 38 ​ 45 Settlement loss ​ ​ — ​ ​ 2 ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Special termination benefits ​ — ​ — ​ — ​ — ​ — ​ 1 Net periodic benefit cost (credit) ​ $ 29 ​ $ 39 ​ $ 38 ​ $ 7 ​ $ (7) ​ $ 9 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 1 $ 2 $ 2 $ — $ — $ — Interest cost ​ 3 ​ 2 ​ 3 ​ — ​ — ​ — Amortization of prior service credit ​ (5) ​ (5) ​ (6) ​ — ​ — ​ — Amortization of actuarial loss ​ 1 ​ 2 ​ 3 ​ — ​ — ​ — Net periodic benefit cost ​ $ — ​ $ 1 ​ $ 2 ​ $ — ​ $ — ​ $ — ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 20 $ 23 $ 22 $ 30 $ 32 $ 33 Interest cost ​ 41 ​ 39 ​ 39 ​ 37 ​ 37 ​ 35 Expected return on plan assets ​ (53) ​ (54) ​ (48) ​ (102) ​ (109) ​ (100) Amortization of prior service credit ​ (2) ​ (2) ​ (2) ​ (4) ​ (5) ​ (5) Amortization of actuarial loss ​ 23 ​ 31 ​ 27 ​ 48 ​ 41 ​ 48 Settlement loss ​ ​ — ​ ​ 2 ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Special termination benefits ​ — ​ — ​ — ​ — ​ — ​ 1 Net periodic benefit cost (credit) ​ $ 29 ​ $ 39 ​ $ 38 ​ $ 10 ​ $ (4) ​ $ 12 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 1 $ 2 $ 2 $ — $ — $ — Interest cost ​ 3 ​ 2 ​ 3 ​ — ​ — ​ — Amortization of prior service credit ​ (5) ​ (5) ​ (6) ​ — ​ — ​ — Amortization of actuarial loss ​ 1 ​ 2 ​ 3 ​ — ​ — ​ — Net periodic benefit cost ​ $ — ​ $ 1 ​ $ 2 ​ $ — ​ $ — ​ $ — ​ The amounts recognized in net periodic benefit cost and other comprehensive income (loss) as of December 31, 2019, 2018 and 2017 were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss (gain) $ 19 $ 18 $ 42 $ 101 $ 117 $ (42) Amortization of actuarial loss ​ (26) ​ (34) ​ (30) ​ (45) ​ (38) ​ (61) Current year prior service (credits) cost ​ — ​ — ​ — ​ (10) ​ 4 ​ (2) Amortization of prior service credit ​ 2 ​ 2 ​ 2 ​ 4 ​ 5 ​ 4 Settlements ​ ​ — ​ ​ (2) ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Curtailment (gain)/loss ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 3 Total recognized in other comprehensive income (loss) ​ (5) ​ (16) ​ 14 ​ 51 ​ 88 ​ (98) Amounts related to discontinued operations ​ ​ 9 ​ ​ (4) ​ ​ — ​ ​ — ​ ​ — ​ ​ 37 Total recognized in other comprehensive income (loss) in continuing operations ​ ​ 4 ​ ​ (20) ​ ​ 14 ​ ​ 51 ​ ​ 88 ​ ​ (61) Net periodic benefit cost ​ 29 ​ 39 ​ 38 ​ 7 ​ (7) ​ 9 Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ 33 ​ $ 19 ​ $ 52 ​ $ 58 ​ $ 81 ​ $ (52) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss (gain) $ — $ (10) $ (12) $ — $ — $ — Amortization of actuarial loss ​ (1) ​ (2) ​ (3) ​ — ​ — ​ (1) Current year prior service credit ​ — ​ — ​ — ​ — ​ — ​ — Amortization of prior service credit ​ 5 ​ 6 ​ 6 ​ — ​ — ​ 2 Total recognized in other comprehensive income (loss) ​ 4 ​ (6) ​ (9) ​ — ​ — ​ 1 Amounts related to discontinued operations ​ ​ (6) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (1) Total recognized in other comprehensive income (loss) in continuing operations ​ ​ (2) ​ ​ (6) ​ ​ (9) ​ ​ — ​ ​ — ​ ​ — Net periodic benefit cost ​ — ​ 1 ​ 2 ​ — ​ — ​ — Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ (2) ​ $ (5) ​ $ (7) ​ $ — ​ $ — ​ $ — ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss $ 19 $ 18 $ 42 $ 101 $ 117 $ (42) Amortization of actuarial loss ​ (26) ​ (34) ​ (30) ​ (48) ​ (41) ​ (68) Current year prior service credit ​ — ​ — ​ — ​ (10) ​ 4 ​ (2) Amortization of prior service credit ​ 2 ​ 2 ​ 2 ​ 4 ​ 5 ​ 4 Settlements ​ ​ — ​ ​ (2) ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Curtailment (gain)/loss ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 3 Total recognized in other comprehensive income (loss) ​ (5) ​ (16) ​ 14 ​ 48 ​ 85 ​ (105) Amounts related to discontinued operations ​ ​ 9 ​ ​ (4) ​ ​ — ​ ​ — ​ ​ — ​ ​ 42 Total recognized in other comprehensive income (loss) in continuing operations ​ ​ 4 ​ ​ (20) ​ ​ 14 ​ ​ 48 ​ ​ 85 ​ ​ (63) Net periodic benefit cost ​ 29 ​ 39 ​ 38 ​ 10 ​ (4) ​ 12 Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ 33 ​ $ 19 ​ $ 52 ​ $ 58 ​ $ 81 ​ $ (51) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss (gain) $ — $ (10) $ (12) $ — $ — $ — Amortization of actuarial loss ​ (1) ​ (2) ​ (3) ​ — ​ — ​ (1) Current year prior service credit ​ — ​ — ​ — ​ — ​ — ​ — Amortization of prior service credit ​ 5 ​ 6 ​ 6 ​ — ​ — ​ 2 Total recognized in other comprehensive income (loss) ​ 4 ​ (6) ​ (9) ​ — ​ — ​ 1 Amounts related to discontinued operations ​ ​ (6) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (1) Total recognized in other comprehensive income (loss) in continuing operations ​ ​ (2) ​ ​ (6) ​ ​ (9) ​ ​ — ​ ​ — ​ ​ — Net periodic benefit cost ​ — ​ 1 ​ 2 ​ — ​ — ​ — Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ (2) ​ $ (5) ​ $ (7) ​ $ — ​ $ — ​ $ — ​ 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 ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Projected benefit obligation ​ ​ ​ ​ ​ ​ ​ Discount rate 3.59 % 4.39 % 3.74 % 1.07 % 1.75 % 1.65 % Rate of compensation increase 4.09 % 4.10 % 4.10 % 2.65 % 2.95 % 3.38 % Net periodic pension cost ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Discount rate 4.39 % 3.74 % 4.24 % 1.75 % 1.65 % 1.82 % Rate of compensation increase 4.07 % 4.10 % 4.14 % 2.64 % 3.38 % 3.51 % Expected return on plan assets 7.52 % 7.52 % 7.53 % 5.89 % 5.88 % 5.68 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Projected benefit obligation ​ ​ ​ ​ ​ ​ ​ Discount rate 3.46 % 4.26 % 3.58 % 2.90 % 3.50 % 3.30 % Net periodic pension cost ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Discount rate 4.26 % 3.58 % 4.04 % 3.50 % 3.30 % 3.50 % ​ At December 31, 2019 and 2018 the health care trend rate used to measure the expected increase in the cost of benefits was assumed to be 6.50%, decreasing to 5% in 2025 and after. Assumed health care cost trend rates can have a significant effect on the amounts reported for the postretirement benefit plans. A one-percent point change in assumed health care cost trend rates would have the following effects (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ Increase Decrease Asset category ​ ​ ​ ​ ​ ​ Effect on total of service and interest cost ​ $ — ​ $ — Effect on postretirement benefit obligation ​ 2 ​ (1) ​ 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, 2019 and 2018 were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 Projected benefit obligation in excess of plan assets ​ ​ ​ ​ ​ ​ ​ ​ Projected benefit obligation ​ $ 1,024 ​ $ 956 ​ $ 2,203 ​ $ 1,790 Fair value of plan assets ​ 790 ​ 697 ​ 1,777 ​ 1,375 ​ 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, 2019 and 2018 were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 Accumulated benefit obligation in excess of plan assets ​ ​ ​ ​ ​ ​ ​ ​ Projected benefit obligation ​ $ 1,024 ​ $ 956 ​ $ 1,066 ​ $ 986 Accumulated benefit obligation ​ 1,019 ​ 935 ​ 991 ​ 919 Fair value of plan assets ​ 790 ​ 697 ​ 664 ​ 608 ​ 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 2020 expected employer contributions ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ To plan trusts ​ $ 45 ​ $ 5 ​ $ 38 ​ $ — Expected benefit payments ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 59 ​ 5 ​ 78 ​ — 2021 ​ 62 ​ 5 ​ 77 ​ — 2022 ​ 65 ​ 5 ​ 81 ​ — 2023 ​ 69 ​ 5 ​ 85 ​ — 2024 ​ 98 ​ 5 ​ 84 ​ — 2025 - 2029 ​ 325 ​ 24 ​ 447 ​ — ​ 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 threaten the plan’s ability to meet currently committed obligations. Additionally, our investment strategy is to achieve returns on plan assets, subject to a prudent level of portfolio risk. Plan assets are invested in a broad range of investments. These investments are diversified in terms of domestic and international equities, both growth and value funds, including small, mid and large capitalization equities; short-term and long-term debt securities; real estate; and cash and cash equivalents. The investments are further diversified within each asset category. The portfolio diversification provides protection against a single investment or asset category having a disproportionate impact on the aggregate performance of the plan assets. 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-party appraisals at least annually, which use valuation techniques and inputs specific to the applicable property, market, or geographic location. During 2019, there were no transfers into 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 $2.8 billion and $2.4 billion at December 31, 2019 and 2018, respectively. The following plan assets are measured at fair value on a recurring basis (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Amounts Using ​ ​ ​ ​ ​ Quoted prices in active ​ Significant other ​ Significant ​ ​ December 31, ​ Markets for identical ​ Observable inputs ​ Unobservable inputs Asset category ​ 2018 ​ assets (Level 1) ​ (Level 2) ​ (Level 3) U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ ​ Equities ​ $ 349 ​ $ 242 ​ $ 107 ​ $ — Fixed income ​ 283 ​ 212 ​ 71 ​ — Real estate/other ​ 65 ​ — ​ — ​ 65 Cash ​ — ​ — ​ — ​ — Total U.S. pension plan assets ​ $ 697 ​ $ 454 ​ $ 178 ​ $ 65 Non-U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equities ​ $ 471 ​ $ 161 ​ $ 310 ​ $ — Fixed income ​ 747 ​ 496 ​ 251 ​ — Real estate/other ​ 497 ​ 93 ​ 348 ​ 56 Cash ​ 36 ​ 36 ​ — ​ — Total Non-U.S. pension plan assets ​ $ 1,751 ​ $ 786 ​ $ 909 ​ $ 56 ​ The following table reconciles the beginning and ending balances of plan assets measured at fair value using unobservable inputs (Level 3) (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ Real Estate/Other ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3) ​ ​ ​ ​ Balance at beginning of period ​ $ 121 ​ $ 117 Return on pension plan assets ​ 4 ​ 4 Purchases, sales and settlements ​ (1) ​ — Transfers into (out of) Level 3 ​ — ​ — Balance at end of period ​ $ 124 ​ $ 121 ​ 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, 2019 and 2018 and the target allocation for 2020, by asset category are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Target ​ ​ ​ Allocation ​ Allocation at December 31, Asset category ​ 2020 ​ 2019 ​ 2018 U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ Equities 53 % 54 % 50 % Fixed income 39 % 38 % 41 % Real estate/other 5 % 8 % 9 % Cash ​ 3 % — % — Total U.S. pension plans 100 % 100 % 100 % Non-U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ Equities 31 % 27 % 27 % Fixed income 44 % 43 % 43 % Real estate/other 15 % 26 % 28 % Cash 10 % 4 % 2 % Total non-U.S. pension plans 100 % 100 % 100 % ​ Equity securities in our pension plans did not include any direct investments in equity securities of our Company or our affiliates at the end of 2019. Defined Contribution Plans—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. Employer contributions were made based on a percentage of employees’ earnings (ranging up to 8%). During 2014, we closed this plan to non-union participants, and in 2015, we closed this plan to union associates. We continue to provide equivalent benefits to those who were covered under this plan into their salary deferral account. We have a salary deferral plan covering substantially all U.S. employees. Plan participants may elect to make voluntary contributions to this plan up to a specified amount of their compensation. We contribute an amount equal to the participant’s contribution, not to exceed 4 % of the participant’s compensation. For new hires who are not eligible for the cash balance plan, and associates who were covered by the money purchase pension plan prior to its closure, we contribute an additional amount into their salary deferral accounts, not to exceed 6% of the participant’s compensation. Our total combined expense for the above defined contribution plans for each of the years ended December 31, 2019, 2018 and 2017 was $17 million, $16 million and $16 million, respectively. Defined Contribution Plans—Non-U.S. ​ 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 - Our total combined expense for these defined contribution plans for the years ended December 31, 2019, 2018 and 2017 was $4 million, $4 million and $5 million, respectively, primarily related to the Huntsman UK Pension Plan. Supplemental Salary Deferral Plan and Supplemental Executive Retirement Plan 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 subject to legal limits on the amount of contributions that can be allocated to an individual in a single year. The SSP was amended and restated effective as of January 1, 2005 to allow eligible executive employees to comply with Section 409A of the Internal Revenue Code of 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 be provided, due to legal limitations, under the Huntsman Defined Benefit Pension Plan, a qualified defined benefit pension plan, and the Huntsman Money Purchase Pension Plan, a qualified money purchase pension plan. Assets of these plans are included in other noncurrent assets and as of December 31, 2019 and 2018 were $39 million and $32 million, respectively. During each of the years ended December 31, 2019, 2018 and 2017, we expensed a total of $1 million as contributions to the SSP and the SERP. Stock-Based Incentive Plan On May 5, 2016, our stockholders approved a new Huntsman Corporation 2016 Stock Incentive Plan (the “2016 Stock Incentive Plan”), which reserved 8.2 million shares for issuance. The Huntsman Corporation Stock Incentive Plan, as amended and restated (the “Prior Plan”), remains in effect for outstanding awards granted pursuant to the Prior Plan, but no further awards may be granted under the Prior Plan. Under the 2016 Stock Incentive Plan, we may grant nonqualified stock options, incentive stock options, stock appreciation rights, restricted stock, phantom stock, performance share units and other stock-based awards to our employees, directors and consultants and to employees and consultants of our subsidiaries, provided that incentive stock options may be granted solely to employees. The terms of the grants under both the 2016 Stock Incentive Plan and the Prior Plan are fixed at the grant date. As of December 31, 2019, we had approximately 8 million shares remaining under the 2016 Stock Incentive Plan available for grant. See “Note 24. Stock-Based Compensation Plan.” International Plans 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.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2019
INCOME TAXES
INCOME TAXES	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, ​ ​ 2019 ​ 2018 ​ 2017 Income tax (benefit) expense: ​ ​ ​ ​ ​ ​ U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ (17) ​ $ 57 ​ $ 23 Deferred ​ (181) ​ (30) ​ (133) Non-U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ 71 ​ 153 ​ 88 Deferred ​ 89 ​ (135) ​ 42 Total ​ $ (38) ​ $ 45 ​ $ 20 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Income tax (benefit) expense: ​ ​ ​ U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ (21) ​ $ 57 ​ $ 16 Deferred ​ (179) ​ (34) ​ (130) Non-U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ 70 ​ 153 ​ 88 Deferred ​ 89 ​ (135) ​ 43 Total ​ $ (41) ​ $ 41 ​ $ 17 ​ 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, ​ ​ 2019 ​ 2018 ​ 2017 Income from continuing operations before income taxes $ 391 $ 734 $ 531 Expected tax expense at U.S. statutory rate of 21%, 21% and 35%, respectively ​ $ 82 ​ $ 154 ​ $ 186 Change resulting from: ​ ​ ​ ​ ​ ​ ​ ​ ​ State tax expense net of federal benefit ​ (3) ​ (1) ​ (2) Non-U.S. tax rate differentials ​ 9 ​ 27 ​ (67) U.S. Tax Reform Act impact ​ ​ (1) ​ ​ 32 ​ ​ (52) Currency exchange gains/losses(net) ​ (5) ​ (10) ​ 15 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 ​ 16 ​ — Tax authority audits and dispute resolutions ​ (6) ​ 5 ​ 9 Share-based compensation excess tax benefits ​ (4) ​ (14) ​ (10) Change in valuation allowance ​ 56 ​ (185) ​ (72) Deferred tax effects of non-U.S. tax rate changes ​ 36 ​ (2) ​ 4 Impact of equity method investments ​ (13) ​ (14) ​ (3) Other non-U.S. tax effects, including nondeductible expenses transfer pricing adjustments and various withholding taxes ​ 19 ​ 19 ​ 3 Other U.S. tax effects, including nondeductible expenses and other credits ​ 2 ​ — ​ 9 Total income tax (benefit) expense ​ $ (38) ​ $ 45 ​ $ 20 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Income from continuing operations before income taxes $ 377 $ 716 $ 524 Expected tax expense at U.S. statutory rate of 21%, 21% and 35%, respectively ​ $ 79 ​ $ 150 ​ $ 183 Change resulting from: ​ ​ ​ ​ ​ ​ ​ ​ ​ State tax expense net of federal benefit ​ (3) ​ (1) ​ (2) Non-U.S. tax rate differentials ​ 9 ​ 27 ​ (67) U.S. Tax Reform Act impact ​ ​ (1) ​ ​ 32 ​ ​ (53) Currency exchange gains/losses(net) ​ (5) ​ (10) ​ 15 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 ​ 16 ​ — Tax authority audits and dispute resolutions ​ (6) ​ 5 ​ 9 Share-based compensation excess tax benefits ​ (4) ​ (14) ​ (10) Change in valuation allowance ​ 56 ​ (185) ​ (72) Deferred tax effects of non-U.S. tax rate changes ​ 36 ​ (2) ​ 4 Impact of equity method investments ​ (13) ​ (14) ​ (3) Other non-U.S. tax effects, including nondeductible expenses transfer pricing adjustments and various withholding taxes ​ 19 ​ 19 ​ 4 Other U.S. tax effects, including nondeductible expenses and other credits ​ 2 ​ — ​ 9 Total income tax (benefit) expense ​ $ (41) ​ $ 41 ​ $ 17 ​ During 2019 and 2018, the average statutory rate for countries with pre-tax income, primarily our operations in China, Germany, India and Luxembourg, was higher than the average statutory rate for countries with pre-tax losses, resulting in a net expense of $9 million and $27 million, respectively, as compared to the 21% U.S. statutory rate reflected in the reconciliation above. During 2017, the average statutory rate for countries with pre-tax income, primarily our Polyurethanes segment in The Netherlands, China and the U.K., as well as our Advanced Materials segment in Switzerland and our Corporate segment in Luxembourg, was lower than the average statutory rate for countries with pre-tax losses, almost all of which had statutory rates lower than the U.S. of 35%, resulting in net benefits as compared to the U.S. statutory rate of $67 million, reflected in the reconciliation above. In certain non-U.S. tax jurisdictions, our U.S. GAAP functional currency is different than the local tax currency. As a result, foreign exchange gains and losses will impact our effective tax rate. For 2019, 2018 and 2017, this resulted in a $5 million tax benefit, a $10 million tax benefit and a $15 million tax expense, respectively. ​ In 2019, we recorded $199 million of deferred tax assets in connection with our tax basis in our Venator investment being greater than our book basis, which the deferred tax asset was partially offset by a valuation allowance of $46 million (for a net tax benefit of $153 million), as further discussed below. Effective January 1, 2019, Switzerland reduced certain conditional income tax rates resulting in a decrease in our net deferred tax assets and a corresponding noncash income tax expense of $32 million for the year ended December 31, 2019. The U.S. Tax Reform Act established new tax laws that affected 2019 and 2018, including, but not limited to, a reduction of the U.S. federal corporate tax rate and the creation of the BEAT and GILTI provisions. Under U.S. GAAP, we have elected to treat the GILTI as a current-period expense when incurred. ​ expense allocations which limit the ability to utilize foreign tax credits against the GILTI inclusion. For 2019 and 2018 we have incurred $ 7 million and $16 million of tax expense resulting from these expense allocations. ​ We recorded a net tax benefit of $20 million over 2017 and 2018 related to enactment of the U.S. Tax Reform Act. As a result of the U.S. Tax Reform Act, we recorded a net tax benefit of $135 million due to remeasurement of deferred U.S. tax assets and liabilities (including a provisional tax benefit of $137 million in 2017 offset by a final tax expense of $2 million in 2018), offset by a tax expense of $115 million due to the transition tax on deemed repatriation of deferred foreign income (including a provisional tax expense of $85 million in 2017 and a $30 million remeasurement period adjustment in 2018). We did not make the election to reclassify the income tax effects of the U.S. Tax Reform Act from accumulated other comprehensive income to retained earnings. ​ The components of income (loss) from continuing operations before income taxes were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 U.S. $ (106) $ (38) $ (143) Non-U.S. ​ 497 ​ 772 ​ 674 Total ​ $ 391 ​ $ 734 ​ $ 531 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 U.S. $ (120) $ (56) $ (150) Non-U.S. ​ 497 ​ 772 ​ 674 Total ​ $ 377 ​ $ 716 ​ $ 524 ​ Components of deferred income tax assets and liabilities were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 Deferred income tax assets: ​ ​ ​ ​ Net operating loss carryforwards ​ $ 281 ​ $ 359 Pension and other employee compensation ​ 172 ​ 180 Property, plant and equipment ​ 15 ​ 15 Intangible assets ​ 56 ​ 76 Basis difference in Venator investment ​ ​ 199 ​ ​ — Operating leases ​ ​ 98 ​ ​ — Other, net ​ 72 ​ 50 Total ​ $ 893 ​ $ 680 Deferred income tax liabilities: ​ ​ ​ ​ ​ ​ Property, plant and equipment ​ $ (218) ​ $ (199) Pension and other employee compensation ​ (1) ​ — Intangible assets ​ ​ (27) ​ ​ (33) Unrealized currency gains ​ ​ (43) ​ ​ (37) Operating leases ​ ​ (102) ​ ​ — Other, net ​ (8) ​ (9) Total ​ $ (399) ​ $ (278) Net deferred tax asset before valuation allowance ​ $ 494 ​ $ 402 Valuation allowance—net operating losses and other ​ (231) ​ (215) Net deferred tax asset ​ $ 263 ​ $ 187 Non-current deferred tax asset ​ 292 ​ 324 Non-current deferred tax liability ​ (29) ​ (137) Net deferred tax asset ​ $ 263 ​ $ 187 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 Deferred income tax assets: ​ ​ ​ ​ Net operating loss carryforwards ​ $ 281 ​ $ 359 Pension and other employee compensation ​ 172 ​ 180 Property, plant and equipment ​ 15 ​ 15 Intangible assets ​ 56 ​ 76 Basis difference in Venator investment ​ ​ 199 ​ ​ — Operating leases ​ ​ 98 ​ ​ — Other, net ​ 72 ​ 50 Total ​ $ 893 ​ $ 680 Deferred income tax liabilities: ​ ​ ​ ​ ​ ​ Property, plant and equipment ​ $ (218) ​ $ (199) Pension and other employee compensation ​ (1) ​ — Intangible assets ​ ​ (27) ​ ​ (33) Unrealized currency gains ​ ​ (43) ​ ​ (37) Operating leases ​ ​ (102) ​ ​ — Other, net ​ (8) ​ (7) Total ​ $ (399) ​ $ (276) Net deferred tax asset before valuation allowance ​ $ 494 ​ $ 404 Valuation allowance—net operating losses and other ​ (231) ​ (215) Net deferred tax asset ​ $ 263 ​ $ 189 Non-current deferred tax asset ​ 292 ​ 324 Non-current deferred tax liability ​ (29) ​ (135) Net deferred tax asset ​ $ 263 ​ $ 189 ​ We evaluate deferred tax assets to determine whether it is more likely than not that they will be realized. Valuation allowances are reviewed each period on a tax jurisdiction by jurisdiction basis to analyze whether there is sufficient positive or negative evidence to support a change in judgment about the realizability of the related deferred tax assets. These conclusions require significant judgment. In evaluating the objective evidence that historical results provide, we consider the cyclicality of businesses and cumulative income or losses during the applicable period. Cumulative losses incurred over the period limits our ability to consider other subjective evidence such as our projections for the future. Our judgments regarding valuation allowances are also influenced by the costs and risks associated with any tax planning idea associated with utilizing a deferred tax asset. ​ We have gross net operating losses (“NOLs”) of $1,185 million in various non-U.S. jurisdictions. While the majority of the non-U.S. NOLs have no expiration date, $175 million have a limited life (of which $162 million are subject to a valuation allowance) and $88 million are scheduled to expire in 2020 (of which $87 million are subject to a valuation allowance). We had $111 million and $91 million of NOLs expire unused in 2019 and 2018, respectively, all of which were subject to a valuation allowance. Included in the $1,185 million of gross non-U.S. NOLs is $581 million attributable to our Luxembourg entities. As of December 31, 2019 due to the uncertainty surrounding the realization of the benefits of these losses, there is a valuation allowance of $92 million against these net tax-effected NOLs of $145 million. ​ During 2019, based on our expectation that our remaining interest in Venator will be sold on or before December 31, 2023, we recorded established $11 million of valuation allowances on the remaining Australia NOLs that are no longer more-likely-than-not realizable following the sale of the Australia portion of the Chemical Intermediates Businesses. ​ During 2018, we released valuation allowances of $132 million. We released significant valuation allowances on certain net deferred tax assets in Switzerland based upon the increased and sustained profitability in our Advanced Materials and Textile Effects businesses. Given Switzerland’s limited seven-year carryover of NOLs, we expect that some of our NOLs will expire unused. Therefore, we recorded a partial release of the valuation allowance of $80 million in the second quarter of 2018. In addition, based upon the separation of Venator from our U.K. combined group and the increased and sustained profitability in our Polyurethanes business in the U.K., we released significant valuation allowances on certain net deferred tax assets in the U.K. Because the U.K. places limitations on the utilization of certain NOLs and limitations on other deferred tax assets, we recorded a partial valuation allowance release of $15 million in the second quarter of 2018. We also released $24 million of significant valuation allowances on certain net deferred tax assets in Luxembourg in the third quarter of 2018 as a result of changes in estimated future taxable income resulting from increased intercompany receivables and, therefore, increased income in Luxembourg, our primary treasury center outside of the U.S. We also had miscellaneous non-significant valuation allowance releases totaling $13 million in 2018. ​ During 2017, we released valuation allowances of $22 million. In Italy, we released valuation allowances of $7 million on certain net deferred assets of our Polyurethanes business. On March 1, 2017 and April 1, 2017, we de-merged the Italian legal entities containing our Polyurethanes business from our combined Italian tax group. The historical and expected continued profitability of those Polyurethanes businesses resulted in the release of the associated valuation allowance. In Luxembourg, we released valuation allowances of $15 million as a result of changes in estimated future taxable income resulting from increased intercompany receivables and, therefore, increased income in Luxembourg, our primary treasury center outside of the U.S. 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 2017 Valuation allowance as of January 1 ​ $ 215 ​ $ 412 ​ $ 484 Valuation allowance as of December 31 ​ 231 ​ 215 ​ 412 Net (increase) decrease ​ (16) ​ 197 ​ 72 Foreign currency movements ​ — ​ 3 ​ 11 (Decrease) increase to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances ​ (40) ​ (15) ​ (11) Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72 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 ​ $ (133) ​ $ 53 ​ $ 50 Releases of valuation allowances in various jurisdictions ​ — ​ 132 ​ 22 Establishments of valuation allowances in various jurisdictions ​ 77 ​ — ​ — Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72 ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 2017 Valuation allowance as of January 1 ​ $ 215 ​ $ 412 ​ $ 487 Valuation allowance as of December 31 ​ 231 ​ 215 ​ 412 Net (increase) decrease ​ (16) ​ 197 ​ 75 Foreign currency movements ​ — ​ 3 ​ 11 (Decrease) increase to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances ​ (40) ​ (15) ​ (14) Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72 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 ​ $ (133) ​ $ 53 ​ $ 49 Releases of valuation allowances in various jurisdictions ​ — ​ 132 ​ 23 Establishments of valuation allowances in various jurisdictions ​ 77 ​ — ​ — Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72 ​ The following is a reconciliation of our unrecognized tax benefits (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 Unrecognized tax benefits as of January 1 ​ $ 26 ​ $ 23 Gross increases and decreases—tax positions taken during a prior period ​ 4 ​ 1 Gross increases and decreases—tax positions taken during the current period ​ 1 ​ 3 Decreases related to settlements of amounts due to tax authorities ​ — ​ — Reductions resulting from the lapse of statutes of limitation ​ (4) ​ — Foreign currency movements ​ 1 ​ (1) Unrecognized tax benefits as of December 31 ​ $ 28 ​ $ 26 ​ As of December 31, 2019 and 2018, the amount of unrecognized tax benefits (not including interest and penalty expense) which, if recognized, would affect the effective tax rate is $15 million and $23 million, respectively. During 2019, we concluded and settled tax examinations in the U.S. (federal and various states). During 2018, we concluded and settled tax examinations in various jurisdictions including but not limited to, Egypt and the U.S. (federal and various states). During 2017, we concluded and settled tax examinations in various jurisdictions, including, but not limited to, China and the U.S. (various states). During 2019 for unrecognized tax benefits that impact tax expense, we recorded a net decrease in unrecognized tax benefits with a corresponding income tax benefit (not including interest and penalty expense) of $10 million. During 2018 and 2017, for unrecognized tax benefits that impact tax expense, we recorded a net increase in unrecognized tax benefits with a corresponding income tax expenses (not including interest and penalty expense) of $5 million and $9 million, respectively. 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, ​ ​ 2019 ​ 2018 ​ 2017 Interest expense included in tax expense $ 2 $ — $ — Penalties expense included in tax expense ​ 2 ​ — ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 Accrued liability for interest $ 5 $ 3 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 2017 and later China 2009 and later Germany 2014 and later Hong Kong 2013 and later India 2004 and later Italy 2015 and later Mexico 2014 and later Switzerland 2013 and later The Netherlands 2016 and later Thailand ​ 2012 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 differ materially from the amounts accrued. 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 $12 million to $14 million. For the 12-month period from the reporting date, we would expect that a substantial portion of the decrease in our unrecognized tax benefits would not result in a corresponding benefit to our income tax expense. ​ The U.S. Tax Reform Act included a mandatory one-time tax on accumulated earnings of foreign subsidiaries, and as a result, all previously unremitted earnings for which no U.S. deferred tax liability had been accrued have now been subject to U.S. tax. For subsidiaries with local withholding taxes, we intend to continue to invest most of these earnings indefinitely within the local country and do not expect to incur any significant, additional taxes related to such amounts. ​

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2019
COMMITMENTS AND CONTINGENCIES
COMMITMENTS AND CONTINGENCIES	21. COMMITMENTS AND CONTINGENCIES Purchase Commitments We have various purchase commitments extending through 2039 for materials, supplies and services entered into in the ordinary course of business. Included in the purchase commitments table below are contracts which require minimum volume purchases that extend beyond one year or are renewable annually and have been renewed for 2019. Certain contracts allow for changes in minimum required purchase volumes in the event of a temporary or permanent shutdown of a facility. To the extent the contract requires a minimum notice period, such notice period has been included in the table below. The contractual purchase prices for substantially all of these contracts are variable based upon market prices, subject to annual negotiations. We have estimated our contractual obligations by using the terms of our current pricing for each contract. We also have a limited number of contracts which require a minimum payment even if no volume is purchased. We believe that all of our purchase obligations will be utilized in our normal operations. We made minimum payments of $1 million, nil and nil for the years ended December 31, 2019, 2018 and 2017, respectively, under such take or pay contracts without taking the product. Total purchase commitments as of December 31, 2019 are as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ ​ 2020 ​ $ 1,364 2021 ​ 905 2022 ​ 751 2023 ​ 424 2024 ​ 416 Thereafter ​ 1,894 ​ ​ $ 5,754 ​ Legal Matters We are a party to various other 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 believe that the outcome of any of these matters will have a material effect on our financial condition, results of operations or liquidity.

ENVIRONMENTAL, HEALTH AND SAFET

ENVIRONMENTAL, HEALTH AND SAFETY MATTERS	12 Months Ended
	Dec. 31, 2019
ENVIRONMENTAL, HEALTH AND SAFETY MATTERS
ENVIRONMENTAL, HEALTH AND SAFETY MATTERS	22. ENVIRONMENTAL, HEALTH AND SAFETY MATTERS EHS Capital Expenditures We may incur future costs for capital improvements and general compliance under EHS laws, including costs to acquire, maintain and repair pollution control equipment. For the years ended December 31, 2019, 2018 and 2017, our capital expenditures for EHS matters totaled $42 million, $32 million and $32 million, respectively. Because capital expenditures for these matters are subject to evolving regulatory requirements and depend, in part, on the timing, promulgation and enforcement of specific requirements, our capital expenditures for EHS matters have varied significantly from year to year and we cannot provide assurance that our recent expenditures are indicative of future amounts we may spend related to EHS and other applicable laws. Environmental Reserves 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 include amounts recorded as asset retirement obligations. We had accrued $4 million and $5 million for environmental liabilities as of December 31, 2019 and 2018, respectively. Of these amounts, $1 million and $2 million were classified as accrued liabilities in our consolidated balance sheets as of December 31, 2019 and 2018, respectively, and $3 million were classified as other noncurrent liabilities in our consolidated balance sheets for both December 31, 2019 and 2018. In certain cases, our remediation liabilities may be payable over periods of up to 30 years. We may incur losses for environmental remediation in excess of the amounts accrued; however, we are not able to estimate the amount or range of such potential excess. Environmental Matters 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 be liable for remediation costs regardless of whether the release or disposal of hazardous substances was in compliance with law at the time it occurred, and a current owner or operator may be liable regardless of whether it owned or operated the facility at the time of the release. Outside the U.S., analogous contaminated property laws, such as those in effect in France and Australia, can hold past owners and/or operators liable for remediation at former facilities. Currently, there are approximately six former facilities or third-party sites in the U.S. for which we have been notified of potential claims against us for cleanup liabilities, including, but not limited to, sites listed under CERCLA. Based on current information and past experiences at other CERCLA sites, we do not expect these third-party claims to have a material impact on our consolidated financial statements. Under the Resource Conservation and Recovery Act (“RCRA”) in the U.S. and similar state laws, we may be required to remediate contamination originating from our properties as a condition to our hazardous waste permit. Some of our manufacturing sites have an extended history of industrial chemical manufacturing and use, including on-site waste disposal. We are aware of soil, groundwater or surface contamination from past operations at some of our sites, and we may find contamination at other sites in the future. For example, our Port Neches, Texas, and Geismar, Louisiana, facilities are the subject of ongoing remediation requirements imposed under RCRA. Similar laws exist in a number of locations in which we currently operate, or previously operated, manufacturing facilities, such as Australia, India, France, Hungary and Italy. North Maybe 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, the U.S. Forest Service notified us that we are a CERCLA potentially responsible party (“PRP”) for contamination originating from the site. In February 2010, we and Wells Cargo (another PRP) agreed to conduct a Remedial Investigation/Feasibility Study of a portion of the site and are currently engaged in that process. At this time, we are unable to reasonably estimate our potential liabilities at this site.

HUNTSMAN CORPORATION STOCKHOLDE

HUNTSMAN CORPORATION STOCKHOLDERS EQUITY	12 Months Ended
	Dec. 31, 2019
HUNTSMAN CORPORATION STOCKHOLDERS' EQUITY
HUNTSMAN CORPORATION STOCKHOLDERS' EQUITY	23. HUNTSMAN CORPORATION STOCKHOLDERS’ EQUITY Share Repurchase Program On February 7, 2018 and on May 3, 2018, our Board of Directors authorized us to repurchase up to an additional $950 million in shares of our common stock in addition to the $50 million remaining under our September 2015 share repurchase authorization. The share repurchase program will be supported by our free cash flow generation. Repurchases may be made through the open market, including through accelerated share repurchase programs, or in privately negotiated transactions, and repurchases may be commenced or suspended from time to time without prior notice. Shares of common stock acquired through the repurchase program are held in treasury at cost. During the year ended December 31, 2019, we repurchased 10,099,892 of our common stock for approximately $208 million, excluding commissions, under the repurchase program. From January 1, 2020 through January 31, 2020, we repurchased an additional 336,478 shares of our common stock for approximately $7 million, excluding commissions. ​ Dividends on Common Stock The following tables represent dividends on common stock for our Company for the years ended December 31, 2019 and 2018 (dollars in millions, except per share payment amounts): ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2018 ​ ​ ​ ​ ​ Approximate ​ ​ Per share ​ amount Quarter ended ​ payment amount ​ paid March 31, 2018 $ 0.1625 $ 39 June 30, 2018 ​ 0.1625 ​ 39 September 30, 2018 ​ 0.1625 ​ 39 December 31, 2018 ​ 0.1625 ​ 39 ​

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	12 Months Ended
	Dec. 31, 2019
STOCK-BASED COMPENSATION PLANS
STOCK-BASED COMPENSATION PLANS	24. STOCK-BASED COMPENSATION PLAN Under the 2016 Stock Incentive Plan, we may grant nonqualified stock options, incentive stock options, stock appreciation rights, restricted stock, phantom stock, performance share units and other stock-based awards to our employees, directors and consultants and to employees and consultants of our subsidiaries, provided that incentive stock options may be granted solely to employees. The terms of the grants under both the 2016 Stock Incentive Plan and the Prior Plan are fixed at the grant date. Initially, there were approximately 8.2 million shares available for issuance under the 2016 Stock Incentive Plan. However, the number of shares available for issuance may be adjusted to include any shares surrendered, exchanged, forfeited or settled in cash pursuant to the Prior Plan. As of December 31, 2019, we had approximately 8 million shares remaining under the 2016 Stock Incentive Plan available for grant. Option awards have a maximum contractual term of 10 years and generally must have an exercise price at least equal to the market price of our common stock on the date the option award is granted. Outstanding stock-based awards generally vest over a three-year period. ​ The compensation cost under the 2016 Stock Incentive Plan and the Prior Plan for our Company and Huntsman International were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Huntsman Corporation compensation cost $ 29 ​ $ 27 ​ $ 36 Huntsman International compensation cost ​ 28 ​ ​ 26 ​ ​ 35 ​ The total income tax benefit recognized in the statement of operations for stock-based compensation arrangements was $8 million, $18 million and $18 million for the years ended December 31, 2019, 2018 and 2017, respectively. Stock Options 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, ​ 2019 ​ 2018 ​ 2019 Dividend yield 2.9 % ​ 1.6 % ​ 2.4 % Expected volatility 54.0 % ​ 55.2 % ​ 56.9 % Risk-free interest rate 2.5 % ​ 2.6 % ​ 2.0 % Expected life of stock options granted during the period 5.9 years ​ 5.9 years ​ 5.9 years ​ ​ A summary of stock option activity under the 2016 Stock Incentive Plan and the Prior Plan as of December 31, 2019 and changes during the year then ended is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Average ​ ​ ​ ​ ​ ​ ​ ​ Average ​ Remaining ​ Aggregate ​ ​ ​ ​ ​ Exercise ​ Contractual ​ Intrinsic Option Awards Shares Price Term Value ​ ​ (in thousands) ​ ​ ​ ​ (years) ​ (in millions) Outstanding at January 1, 2019 ​ 4,545 ​ $ 17.81 ​ ​ ​ ​ ​ ​ Granted ​ ​ 896 ​ ​ 22.66 ​ ​ ​ ​ ​ ​ Exercised ​ ​ (366) ​ ​ 11.19 ​ ​ ​ ​ ​ ​ Forfeited ​ ​ (50) ​ ​ 25.59 ​ ​ ​ ​ ​ ​ Outstanding at December 31, 2019 ​ ​ 5,025 ​ ​ 19.08 ​ ​ 6.2 ​ $ 30 Exercisable at December 31, 2019 ​ ​ 3,600 ​ ​ 16.90 ​ ​ 5.3 ​ ​ 27 ​ The weighted-average grant-date fair value of stock options granted during 2019, 2018 and 2017 was $9.27, $15.20 and $9.26 per option, respectively. As of December 31, 2019, there was $8 million of total unrecognized compensation cost related to nonvested stock option arrangements granted under the 2016 Stock Incentive Plan and the Prior Plan. That cost is expected to be recognized over a weighted-average period of approximately 1.8 years. During the years ended December 31, 2019, 2018 and 2017, the total intrinsic value of stock options exercised was approximately $4 million, $78 million and $48 million, respectively. Cash received from stock options exercised during the years ended December 31, 2019, 2018 and 2017 was approximately $2 million, $17 million and $35 million, respectively. The cash tax benefit from stock options exercised during the years ended December 31, 2019, 2018 and 2017 was approximately $1 million, $17 million, and $15 million, respectively. Nonvested Shares Nonvested shares granted under the 2016 Stock Incentive Plan and the Prior Plan consist of restricted stock and performance share unit awards, which are accounted for as equity awards, and phantom stock, which is accounted for as a liability award because it can be settled in either stock or cash. 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, 2019, 2018 and 2017, the weighted-average expected volatility rate was 34.6%, 44.3% and 45.0%, respectively, and the weighted average risk-free interest rate was 2.5%, 2.3% and 1.5%, respectively. For the performance share unit awards granted during the years ended December 31, 2019, 2018 and 2017, the number of shares earned varies based upon the Company achieving certain performance criteria over a three-year performance period. The performance criteria are total stockholder return of our common stock relative to the total stockholder return of a specified industry peer group for the three-year performance periods. A summary of the status of our nonvested shares as of December 31, 2019 and changes during the year then ended is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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, 2019 ​ ​ 1,923 ​ $ 19.08 ​ ​ 504 ​ $ 20.66 Granted ​ ​ 709 ​ ​ 24.60 ​ ​ 256 ​ ​ 22.64 Vested ​ ​ (974) (1)(2) ​ 13.65 ​ ​ (313) ​ ​ 16.32 Forfeited ​ ​ (18) ​ ​ 26.29 ​ ​ (20) ​ ​ 25.33 Nonvested at December 31, 2019 ​ ​ 1,640 ​ ​ 24.61 ​ ​ 427 ​ ​ 24.80 (1) As of December 31, 2019, a total of 389,095 restricted stock units were vested but not yet issued, of which 30,486 vested during 2019. 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. (2) A total of 412,246 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, 2018. During the year ended December 31, 2019, an additional 357,006 performance share unit awards with a grant date fair value of $10.22 vested above the target in accordance the performance criteria of these awards. As of December 31, 2019, there was $22 million of total unrecognized compensation cost related to nonvested share compensation arrangements granted under the Stock Incentive Plan and the Prior Plan. That cost is expected to be recognized over a weighted-average period of approximately 1.8 years. The value of share awards that vested during the years ended December 31, 2019, 2018 and 2017 was $24 million, $24 million and $22 million, respectively.

OTHER COMPREHENSIVE (LOSS) INCO

OTHER COMPREHENSIVE (LOSS) INCOME	12 Months Ended
	Dec. 31, 2019
OTHER COMPREHENSIVE (LOSS) INCOME
OTHER COMPREHENSIVE INCOME	25. OTHER COMPREHENSIVE (LOSS) 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, 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 and January 1, 2019, respectively. (b) Amounts are net of tax of $148 and $135 as of December 31, 2019 and January 1, 2019, respectively. (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, 2018 ​ $ (249) ​ $ (1,189) ​ $ 3 ​ $ 24 ​ $ (1,411) ​ $ 143 ​ $ (1,268) Cumulative effect of changes in fair value of equity investments ​ ​ — ​ ​ — ​ ​ — ​ ​ (10) ​ ​ (10) ​ ​ — ​ ​ (10) Revised beginning balance, January 1, 2018 ​ ​ (249) ​ ​ (1,189) ​ ​ 3 ​ ​ 14 ​ ​ (1,421) ​ ​ 143 ​ ​ (1,278) Other comprehensive (loss) income before reclassifications, gross ​ ​ (186) ​ ​ (130) ​ ​ — ​ ​ — ​ ​ (316) ​ ​ 47 ​ ​ (269) Tax expense (benefit) ​ ​ (6) ​ ​ 27 ​ ​ — ​ ​ (3) ​ ​ 18 ​ ​ — ​ ​ 18 Amounts reclassified from accumulated other comprehensive loss, gross(c) ​ ​ — ​ ​ 77 ​ ​ — ​ ​ — ​ ​ 77 ​ ​ — ​ ​ 77 Tax expense ​ ​ — ​ ​ (13) ​ ​ — ​ ​ (6) ​ ​ (19) ​ ​ — ​ ​ (19) Net current-period other comprehensive (loss) income ​ ​ (192) ​ ​ (39) ​ ​ — ​ ​ (9) ​ ​ (240) ​ ​ 47 ​ ​ (193) Disposition of a portion of Venator ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (5) ​ ​ (5) Deconsolidation of Venator ​ ​ 70 ​ ​ 285 ​ ​ 5 ​ ​ — ​ ​ 360 ​ ​ (149) ​ ​ 211 Tax expense ​ ​ — ​ ​ (51) ​ ​ — ​ ​ — ​ ​ (51) ​ ​ — ​ ​ (51) Ending balance, December 31, 2018 ​ $ (371) ​ $ (994) ​ $ 8 ​ $ 5 ​ $ (1,352) ​ $ 36 ​ $ (1,316) (a) Amounts are net of tax of $71 and $65 as of December 31, 2018 and January 1, 2018, respectively. (b) Amounts are net of tax of $135 and $172 as of December 31, 2018 and January 1, 2018, respectively. (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): 2019 ​ 2018 ​ 2017 is presented Amortization of pension and other postretirement benefits: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Prior service credit ​ $ (11) ​ $ (12) ​ $ (15) ​ (b) Settlement loss ​ ​ 1 ​ ​ 2 ​ ​ — ​ ​ Actuarial loss ​ ​ 72 ​ ​ 87 ​ ​ 95 ​ (b)(c) ​ ​ ​ 62 ​ ​ 77 ​ ​ 80 ​ Total before tax ​ ​ ​ (12) ​ ​ (13) ​ ​ (14) ​ Income tax expense Total reclassifications for the period ​ $ 50 ​ $ 64 ​ $ 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. Employee Benefit Plans.” (c) Amounts contain approximately $7, $22 and $22 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2019, 2018 and 2017, respectively. Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Pension Other Other, net Total Amounts Amounts 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 and January 1, 2019, respectively. (b) Amounts are net of tax of $174 and $161 as of December 31, 2019 and January 1, 2019, respectively. (c) See table below for details about these reclassifications. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Pension Other Other, net Total Amounts Amounts Beginning balance, January 1, 2018 $ (252) $ (1,174) $ 3 $ 17 $ (1,406) $ 143 $ (1,263) Cumulative effect of changes in fair value of equity investments ​ ​ — ​ ​ — ​ ​ — ​ ​ (10) ​ ​ (10) ​ ​ — ​ ​ (10) Revised beginning balance, January 1, 2018 ​ ​ (252) ​ ​ (1,174) ​ ​ 3 ​ ​ 7 ​ ​ (1,416) ​ ​ 143 ​ ​ (1,273) Other comprehensive (loss) income before reclassifications, gross ​ ​ (188) ​ ​ (130) ​ ​ — ​ ​ — ​ ​ (318) ​ ​ 47 ​ ​ (271) Tax expense (benefit) ​ ​ (6) ​ ​ 27 ​ ​ — ​ ​ (1) ​ ​ 20 ​ ​ — ​ ​ 20 Amounts reclassified from accumulated other comprehensive loss, gross(c) ​ ​ — ​ ​ 80 ​ ​ — ​ ​ — ​ ​ 80 ​ ​ — ​ ​ 80 Tax expense ​ ​ — ​ ​ (14) ​ ​ — ​ ​ (5) ​ ​ (19) ​ ​ — ​ ​ (19) Net current-period other comprehensive (loss) income ​ ​ (194) ​ ​ (37) ​ ​ — ​ ​ (6) ​ ​ (237) ​ ​ 47 ​ ​ (190) Disposition of a portion of Venator ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (5) ​ ​ (5) Deconsolidation of Venator ​ ​ 70 ​ ​ 285 ​ ​ 5 ​ ​ — ​ ​ 360 ​ ​ (149) ​ ​ 211 Tax expense ​ ​ — ​ ​ (51) ​ ​ — ​ ​ — ​ ​ (51) ​ ​ — ​ ​ (51) Ending balance, December 31, 2018 ​ $ (376) ​ $ (977) ​ $ 8 ​ $ 1 ​ $ (1,344) ​ $ 36 ​ $ (1,308) (a) Amounts are net of tax of $57 and $51 as of December 31, 2018 and January 1, 2018, respectively. (b) Amounts are net of tax of $161 and $199 as of December 31, 2018 and January 1, 2018, respectively. (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): 2019 ​ 2018 ​ 2017 is presented Amortization of pension and other postretirement benefits: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Prior service credit ​ $ (11) ​ $ (12) ​ $ (15) ​ (b) Settlement loss ​ ​ 1 ​ ​ 2 ​ ​ — ​ ​ Actuarial loss ​ ​ 75 ​ ​ 90 ​ ​ 101 ​ (b)(c) ​ ​ ​ 65 ​ ​ 80 ​ ​ 86 ​ Total before tax ​ ​ ​ (12) ​ ​ (14) ​ ​ (15) ​ Income tax expense Total reclassifications for the period ​ $ 53 ​ $ 66 ​ $ 71 ​ 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. Employee Benefit Plans.” (c) Amounts contain approximately $7 and $22 and $29 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2019, 2018 and 2017, respectively. 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.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2019
RELATED PARTY TRANSACTIONS
RELATED PARTY TRANSACTIONS	26. RELATED PARTY TRANSACTIONS Our consolidated financial statements include the following transactions with our affiliates not otherwise disclosed (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Sales to: ​ ​ ​ ​ ​ ​ Unconsolidated affiliates ​ $ 133 ​ $ 153 ​ $ 161 Inventory purchases from: ​ ​ ​ ​ ​ ​ ​ ​ ​ Unconsolidated affiliates ​ 434 ​ 411 ​ 291 ​

OPERATING SEGMENT INFORMATION

OPERATING SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2019
OPERATING SEGMENT INFORMATION
OPERATING SEGMENT INFORMATION	27. OPERATING SEGMENT INFORMATION 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 operating segments, which are also our reportable segments: Polyurethanes, Performance Products, Advanced Materials and Textile Effects. We have organized our business and derived our operating segments around differences in product lines. Beginning in the third quarter of 2019, we reported the results of our Chemical Intermediates Businesses as discontinued operations and the related assets and liabilities as held for sale in our consolidated financial statements for all periods presented. See “Note 4. Discontinued Operations and Business Dispositions—Sale of Chemical Intermediates Businesses.” In addition, in connection with the Venator IPO in August 2017, we separated Venator and, beginning in the third quarter of 2017, we reported the results of operations of Venator as discontinued operations in our consolidated financial statements. On December 3, 2018, we further reduced our remaining investment in Venator by the sale of Venator ordinary shares which allowed us to deconsolidate Venator and account for our remaining interest in Venator as an equity method investment using the fair value option post consolidation. See “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator.” ​ The major products of each reportable operating segment are as follows: ​ ​ ​ ​ Segment Products Polyurethanes ​ MDI, polyols, TPU and aniline 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, dyes and digital inks ​ 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, ​ 2019 2018 2017 Revenues: ​ ​ ​ ​ ​ ​ ​ Polyurethanes $ 3,911 ​ $ 4,282 ​ $ 3,764 Performance Products ​ 1,158 ​ ​ 1,301 ​ ​ 1,156 Advanced Materials ​ 1,044 ​ ​ 1,116 ​ ​ 1,040 Textile Effects ​ 763 ​ ​ 824 ​ ​ 776 Corporate and eliminations ​ (79) ​ ​ 81 ​ ​ 109 Total $ 6,797 ​ $ 7,604 ​ $ 6,845 ​ ​ ​ ​ ​ ​ ​ ​ ​ Huntsman Corporation: ​ ​ ​ ​ ​ ​ ​ ​ Segment adjusted EBITDA(1): ​ ​ ​ ​ ​ ​ ​ ​ Polyurethanes $ 548 ​ $ 809 ​ $ 776 Performance Products ​ 168 ​ ​ 197 ​ ​ 155 Advanced Materials ​ 201 ​ ​ 225 ​ ​ 219 Textile Effects ​ 84 ​ ​ 101 ​ ​ 83 Corporate and other(2) ​ (155) ​ ​ (171) ​ ​ (193) Total ​ 846 ​ ​ 1,161 ​ ​ 1,040 Reconciliation of adjusted EBITDA to net income: ​ ​ ​ ​ ​ ​ ​ ​ Interest expense—continuing operations ​ (111) ​ ​ (115) ​ ​ (165) Interest expense—discontinued operations ​ — ​ ​ (36) ​ ​ (19) Income tax benefit (expense)—continuing operations ​ 38 ​ ​ (45) ​ ​ (20) Income tax expense—discontinued operations ​ (35) ​ ​ (86) ​ ​ (111) Depreciation and amortization—continuing operations ​ (270) ​ ​ (255) ​ ​ (236) Depreciation and amortization—discontinued operations ​ (61) ​ ​ (88) ​ ​ (151) Net income attributable to noncontrolling interests ​ 36 ​ ​ 313 ​ ​ 105 Other adjustments: ​ ​ ​ ​ ​ ​ ​ ​ Business acquisition and integration expenses and purchase accounting inventory adjustments ​ (5) ​ ​ (9) ​ ​ (19) Merger costs ​ — ​ ​ (2) ​ ​ (28) EBITDA from discontinued operations ​ 265 ​ ​ 171 ​ ​ 511 Noncontrolling interest of discontinued operations ​ — ​ ​ (232) ​ ​ (49) Fair value adjustments to Venator investment ​ (18) ​ ​ (62) ​ ​ — Loss on early extinguishment of debt ​ (23) ​ ​ (3) ​ ​ (54) Certain legal settlements and related (expenses) income ​ (6) ​ ​ (1) ​ ​ 11 (Loss) gain on sale of businesses/assets ​ (21) ​ ​ — ​ ​ 9 Certain nonrecurring information technology project implementation costs ​ (4) ​ ​ — ​ ​ — Amortization of pension and postretirement actuarial losses ​ (66) ​ ​ (67) ​ ​ (69) Plant incident remediation costs ​ (8) ​ ​ — ​ ​ (1) U.S. Tax Reform Act impact on noncontrolling interest ​ — ​ ​ — ​ ​ 6 Restructuring, impairment and plant closing and transition credits (costs) ​ 41 ​ ​ 6 ​ ​ (19) Net income $ 598 ​ $ 650 ​ $ 741 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Depreciation and Amortization: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 120 ​ $ 108 ​ $ 92 Performance Products ​ 81 ​ 78 ​ 78 Advanced Materials ​ 36 ​ 37 ​ 33 Textile Effects ​ 16 ​ 16 ​ 14 Corporate and other ​ 17 ​ 16 ​ 19 Total ​ $ 270 ​ $ 255 ​ $ 236 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Capital Expenditures: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 185 ​ $ 153 ​ $ 158 Performance Products ​ 32 ​ 48 ​ 35 Advanced Materials ​ 24 ​ 20 ​ 21 Textile Effects ​ 22 ​ 20 ​ 16 Corporate and other ​ 11 ​ 10 ​ 4 Total ​ $ 274 ​ $ 251 ​ $ 234 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Total Assets: ​ ​ ​ ​ Polyurethanes ​ $ 3,437 ​ $ 3,129 Performance Products ​ 1,125 ​ 1,161 Advanced Materials ​ 774 ​ 796 Textile Effects ​ 511 ​ 571 Corporate and other ​ 1,265 ​ 1,187 Total ​ $ 7,112 ​ $ 6,844 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Goodwill: ​ ​ ​ ​ Polyurethanes ​ $ 177 ​ $ 173 Performance Products ​ 16 ​ 16 Advanced Materials ​ 83 ​ 86 Total ​ $ 276 ​ $ 275 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Huntsman International: ​ ​ ​ ​ ​ ​ ​ Segment adjusted EBITDA(1): ​ ​ ​ ​ ​ ​ ​ ​ Polyurethanes $ 548 ​ $ 809 ​ $ 776 Performance Products ​ 168 ​ ​ 197 ​ ​ 155 Advanced Materials ​ 201 ​ ​ 225 ​ ​ 219 Textile Effects ​ 84 ​ ​ 101 ​ ​ 83 Corporate and other(2) ​ (150) ​ ​ (167) ​ ​ (189) Total ​ 851 ​ ​ 1,165 ​ ​ 1,044 Reconciliation of adjusted EBITDA to net income: ​ ​ ​ ​ ​ ​ ​ ​ Interest expense—continuing operations ​ (126) ​ ​ (136) ​ ​ (181) Interest expense—discontinued operations ​ — ​ ​ (36) ​ ​ (19) Income tax benefit (expense)—continuing operations ​ 41 ​ ​ (41) ​ ​ (17) Income tax expense—discontinued operations ​ (35) ​ ​ (86) ​ ​ (111) Depreciation and amortization—continuing operations ​ (270) ​ ​ (252) ​ ​ (228) Depreciation and amortization—discontinued operations ​ (61) ​ ​ (88) ​ ​ (151) Net income attributable to noncontrolling interests ​ 36 ​ ​ 313 ​ ​ 105 Other adjustments: ​ ​ ​ ​ ​ ​ ​ ​ Business acquisition and integration expenses and purchase accounting inventory adjustments ​ (5) ​ ​ (9) ​ ​ (23) Merger costs ​ — ​ ​ (2) ​ ​ (28) EBITDA from discontinued operations ​ 265 ​ ​ 171 ​ ​ 511 Noncontrolling interest of discontinued operations ​ — ​ ​ (232) ​ ​ (49) Fair value adjustments to Venator investment ​ (18) ​ ​ (62) ​ ​ — Loss on early extinguishment of debt ​ (23) ​ ​ (3) ​ ​ (54) Certain legal settlements and related (expenses) income ​ (6) ​ ​ (1) ​ ​ 11 (Loss) gain on sale of businesses/assets ​ (21) ​ ​ — ​ ​ 10 Certain nonrecurring information technology project implementation costs ​ (4) ​ ​ — ​ ​ — Amortization of pension and postretirement actuarial losses ​ (70) ​ ​ (71) ​ ​ (72) Plant incident remediation costs ​ (8) ​ ​ — ​ ​ (1) U.S. Tax Reform Act impact on noncontrolling interest ​ — ​ ​ — ​ ​ 6 Restructuring, impairment and plant closing and transition credits (costs) ​ 41 ​ ​ 6 ​ ​ (19) Net income $ 587 ​ $ 636 ​ $ 734 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Depreciation and Amortization: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 120 ​ $ 108 ​ $ 92 Performance Products ​ 81 ​ 78 ​ 78 Advanced Materials ​ 36 ​ 37 ​ 33 Textile Effects ​ 16 ​ 16 ​ 14 Corporate and other ​ 17 ​ 13 ​ 11 Total ​ $ 270 ​ $ 252 ​ $ 228 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Capital Expenditures: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 185 ​ $ 153 ​ $ 158 Performance Products ​ 32 ​ 48 ​ 35 Advanced Materials ​ 24 ​ 20 ​ 21 Textile Effects ​ 22 ​ 20 ​ 16 Corporate and other ​ 11 ​ 10 ​ 4 Total ​ $ 274 ​ $ 251 ​ $ 234 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Total Assets: ​ ​ ​ ​ Polyurethanes ​ $ 3,437 ​ $ 3,129 Performance Products ​ 1,125 ​ 1,161 Advanced Materials ​ 774 ​ 796 Textile Effects ​ 511 ​ 571 Corporate and other ​ 1,668 ​ 1,569 Total ​ $ 7,515 ​ $ 7,226 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Goodwill: ​ ​ ​ ​ Polyurethanes ​ $ 177 ​ $ 173 Performance Products ​ 16 ​ 16 Advanced Materials ​ 83 ​ 86 Total ​ $ 276 ​ $ 275 ​ (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 management 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; (f) loss on early extinguishment of debt; (g) certain legal settlements and related income (expenses); (h) gain on sale of businesses/assets; (i) certain nonrecurring information technology project implementation costs; (j) amortization of pension and postretirement actuarial losses; (k) plant incident remediation costs; (l) U.S. Tax Reform Act impact on noncontrolling interest; and (m) restructuring, impairment, plant closing and transition credits (costs). (2) Corporate and other includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, nonoperating income and expense, benzene sales and gains and losses on the disposition of corporate assets. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Revenues by geographic area(1): ​ ​ ​ ​ ​ ​ ​ ​ ​ United States ​ $ 2,025 ​ $ 2,136 ​ $ 1,828 China ​ 1,076 ​ 1,260 ​ 1,122 Germany ​ 541 ​ 537 ​ 507 India ​ 319 ​ 352 ​ 336 Other nations ​ 2,836 ​ 3,319 ​ 3,052 Total ​ $ 6,797 ​ $ 7,604 ​ $ 6,845 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Long-lived assets(2): ​ ​ ​ ​ United States ​ $ 970 ​ $ 944 The Netherlands ​ 334 ​ 331 China ​ 247 ​ 247 Saudi Arabia ​ 154 ​ 161 Germany ​ 137 ​ 143 Switzerland ​ ​ 106 ​ ​ 108 Singapore ​ 94 ​ 96 Other nations ​ 341 ​ 323 Total ​ $ 2,383 ​ $ 2,353 ​ (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. ​

SELECTED UNAUDITED QUARTERLY FI

SELECTED UNAUDITED QUARTERLY FINANCIAL DATA	12 Months Ended
	Dec. 31, 2019
SELECTED UNAUDITED QUARTERLY FINANCIAL DATA
SELECTED UNAUDITED QUARTERLY FINANCIAL DATA	28. SELECTED UNAUDITED QUARTERLY FINANCIAL DATA A summary of selected unaudited quarterly financial data for the years ended December 31, 2019 and 2018 is as follows (dollars in millions, except per share amounts): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2019 2019 2019 2019 Revenues ​ $ 1,669 ​ $ 1,784 ​ $ 1,687 ​ $ 1,657 Gross profit ​ 359 ​ 373 ​ 340 ​ 310 Restructuring, impairment and plant closing costs (credits) ​ 1 ​ — ​ (43) ​ 1 Income (loss) from continuing operations ​ 108 ​ 83 ​ (27) ​ 265 Net income ​ 131 ​ 118 ​ 41 ​ 308 Net income attributable to noncontrolling interests ​ ​ 12 ​ ​ 8 ​ ​ 11 ​ ​ 5 Net income attributable to Huntsman Corporation ​ 119 ​ 110 ​ 30 ​ 303 Basic income per share(4): ​ ​ ​ ​ ​ Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.41 ​ 0.33 ​ (0.17) ​ 1.16 Net income attributable to Huntsman Corporation common stockholders ​ 0.51 ​ 0.48 ​ 0.13 ​ 1.35 Diluted income per share(4): ​ ​ ​ ​ Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.41 ​ 0.32 ​ (0.17) ​ 1.15 Net income attributable to Huntsman Corporation common stockholders ​ 0.51 ​ 0.47 ​ 0.13 ​ 1.34 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2018 2018 2018(1) 2018(2) Revenues ​ $ 1,838 ​ $ 1,977 ​ $ 1,968 ​ $ 1,821 Gross profit ​ 466 ​ 479 ​ 467 ​ 352 Restructuring, impairment and plant closing costs (credits) ​ 2 ​ 1 ​ 5 ​ (15) Income from continuing operations ​ 189 ​ 242 ​ 197 ​ 61 Net income (loss) ​ 350 ​ 623 ​ (8) ​ (315) Net income attributable to noncontrolling interests(3) ​ ​ 76 ​ ​ 209 ​ ​ 3 ​ ​ 25 Net income (loss) attributable to Huntsman Corporation ​ 274 ​ 414 ​ (11) ​ (340) Basic income per share(4): ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.70 ​ 0.93 ​ 0.72 ​ 0.20 Net income (loss) attributable to Huntsman Corporation common stockholders ​ 1.14 ​ 1.73 ​ (0.05) ​ (1.45) Diluted income per share(4): ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.68 ​ 0.91 ​ 0.72 ​ 0.19 Net income (loss) attributable to Huntsman Corporation common stockholders ​ 1.11 ​ 1.71 ​ (0.05) ​ (1.43) ​ Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2019 2019 2019 2019 Revenues ​ $ 1,669 ​ $ 1,784 ​ $ 1,687 ​ $ 1,657 Gross profit ​ 359 ​ 373 ​ 340 ​ 310 Restructuring, impairment and plant closing costs (credits) ​ 1 ​ — ​ (43) ​ 1 Income (loss) from continuing operations ​ 105 ​ 80 ​ (30) ​ 268 Net income ​ 128 ​ 115 ​ 38 ​ 311 Net income attributable to noncontrolling interests ​ ​ 12 ​ ​ 8 ​ ​ 11 ​ ​ 5 Net income attributable to Huntsman International ​ 116 ​ 107 ​ 27 ​ 306 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2018 2018 2018(1) 2018(2) Revenues ​ $ 1,838 ​ $ 1,977 ​ ​ 1,968 ​ $ 1,821 Gross profit ​ 467 ​ 480 ​ ​ 468 ​ 352 Restructuring, impairment and plant closing costs (credits) ​ 2 ​ 1 ​ ​ 5 ​ (15) Income from continuing operations ​ 186 ​ 239 ​ ​ 194 ​ 56 Net income (loss) ​ 347 ​ 620 ​ ​ (11) ​ (320) Net income attributable to noncontrolling interests(3) ​ ​ 76 ​ ​ 209 ​ ​ 3 ​ ​ 25 Net income (loss) attributable to Huntsman International ​ 271 ​ 411 ​ ​ (14) ​ (345) (1) During the third quarter of 2018, we recognized a net after tax valuation allowance of $270 million to adjust the carrying amount of the assets and liabilities held for sale and the amount of accumulated comprehensive income recorded in equity related to Venator to the lower of cost or estimated fair value, less cost to sell. This loss was recorded in discontinued operations on our consolidated statements of operations. For more information see “Note 4. Discontinued Operations and Dispositions – Separation and Deconsolidation of Venator.” ​ (2) In connection with the deconsolidation of Venator, we recorded a pretax loss of $427 million during the fourth quarter of 2018 to record our remaining ownership interest in Venator at fair value. This loss was recorded in discontinued operations on our consolidated statements of operations. We elected the fair value option to account for our equity method investment in Venator post deconsolidation. Accordingly, at December 31, 2018, we recorded a pretax loss of $57 million to record our equity method investment in Venator at fair value. This loss was recorded in “Fair value adjustments to Venator investment” on our consolidated statements of operations. Furthermore, in connection with the December 3, 2018 sale of Venator shares to Bank of America N.A., we recorded a forward swap. During December 2018, we recorded a loss of $5 million in “Fair value adjustments to Venator investment” on our consolidated statements of operations to record the forward swap at fair value. For more information, see “Note 4. Discontinued Operations and Dispositions – Separation and Deconsolidation of Venator.” ​ (3) In connection with the Venator IPO in August 2017, we separated the P&A Business and, beginning in the third quarter of 2017, we reported the results of operations of Venator as discontinued operations on our consolidated financial statements. On December 3, 2018, we further reduced our investment in Venator by the sale of Venator ordinary shares which allowed us to deconsolidate Venator beginning in December 2018. See “Note 4. Discontinued Operations and Business Dispositions—Separation of Venator.” (4) Basic and diluted income per share are computed independently for each of the quarters presented based on the weighted average number of common shares outstanding during that period. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share. ​

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of Registrant	12 Months Ended
	Dec. 31, 2019
Schedule I - Condensed Financial Information of Registrant
Schedule I - Condensed Financial Information of Registrant	HUNTSMAN CORPORATION (PARENT ONLY) Schedule I—Condensed Financial Information of Registrant HUNTSMAN CORPORATION (Parent Only) BALANCE SHEETS (In Millions, Except Share and Per Share Amounts) ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 ASSETS ​ ​ Prepaid assets ​ $ 1 ​ $ 1 Receivable from affiliate ​ 86 ​ 72 Note receivable from affiliate ​ 100 ​ 100 Total current assets ​ 187 ​ 173 Note receivable from affiliate-noncurrent ​ 280 ​ 488 Investment in and advances to affiliates ​ 2,626 ​ 2,251 Total assets ​ $ 3,093 ​ $ 2,912 LIABILITIES AND STOCKHOLDERS’ EQUITY ​ ​ Payable to affiliate ​ $ 396 ​ $ 381 Accrued liabilities ​ 3 ​ 3 Total current liabilities ​ 399 ​ 384 Other noncurrent liabilities ​ 7 ​ 8 Total liabilities ​ 406 ​ 392 STOCKHOLDERS’ EQUITY ​ ​ Common stock $0.01 par value, 1,200,000,000 shares authorized, 257,405,496 and 256,006,849 shares issued and 224,295,868 and 232,994,172 shares outstanding, respectively ​ 3 ​ 3 Additional paid-in capital ​ 4,008 ​ 3,984 Treasury stock, 33,112,572 and 23,012,680 shares, respectively ​ (635) ​ (427) Unearned stock-based compensation ​ (17) ​ (16) Retained earnings ​ 690 ​ 292 Accumulated other comprehensive loss ​ (1,362) ​ (1,316) Total stockholders’ equity ​ 2,687 ​ 2,520 Total liabilities and stockholders’ equity ​ $ 3,093 ​ $ 2,912 ​ 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, ​ ​ 2019 ​ 2018 ​ 2017 Selling, general and administrative expenses $ (5) $ (4) $ (4) Interest income ​ 15 ​ 21 ​ 16 Equity in income of subsidiaries ​ 401 ​ 163 ​ 501 Dividend income—affiliate ​ 148 ​ 154 ​ 120 Other income ​ ​ 3 ​ ​ 3 ​ ​ 3 Net income ​ $ 562 ​ $ 337 ​ $ 636 ​ 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, ​ ​ 2019 ​ 2018 ​ 2017 Net income $ 562 $ 337 $ 636 Other comprehensive income, net of tax: ​ ​ ​ Foreign currency translations adjustments ​ 2 ​ (192) ​ 210 Pension and other postretirement benefits adjustments ​ (37) ​ (39) ​ 86 Other, net ​ 35 ​ 304 ​ 105 Other comprehensive income, net of tax ​ — ​ 73 ​ 401 Comprehensive income ​ 562 ​ 410 ​ 1,037 Comprehensive income attributable to noncontrolling interests ​ (31) ​ (266) ​ (127) Comprehensive income attributable to Huntsman Corporation ​ $ 531 ​ $ 144 ​ $ 910 ​ 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 ​ Accumulated ​ ​ ​ ​ ​ Shares ​ ​ ​ ​ Additional ​ ​ ​ ​ Unearned ​ deficit) ​ other ​ ​ ​ ​ ​ Common ​ Common ​ paid-in ​ Treasury ​ stock-based ​ retained ​ comprehensive ​ Total ​ stock stock capital stock compensation earnings loss equity Beginning balance, January 1, 2017 ​ 236,370,347 ​ $ 3 ​ $ 3,447 ​ $ (150) ​ $ (17) ​ $ (325) ​ $ (1,671) ​ $ 1,287 Net income ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 636 ​ ​ — ​ ​ 636 Other comprehensive income ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 403 ​ ​ 403 Issuance of nonvested stock awards ​ — ​ ​ — ​ ​ 18 ​ ​ — ​ ​ (18) ​ ​ — ​ ​ — ​ ​ — Vesting of stock awards ​ 1,316,975 ​ ​ — ​ ​ 8 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 8 Recognition of stock-based compensation ​ — ​ ​ — ​ ​ 10 ​ ​ — ​ ​ 18 ​ ​ — ​ ​ — ​ ​ 28 Repurchase and cancellation of stock awards ​ (402,978) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (12) ​ ​ — ​ ​ (12) Stock options exercised ​ 2,929,262 ​ ​ — ​ ​ 53 ​ ​ — ​ ​ — ​ ​ (18) ​ ​ — ​ ​ 35 Disposition of a portion of Venator ​ — ​ ​ — ​ ​ 413 ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 413 Costs of the IPO and secondary offering of Venator ​ — ​ ​ — ​ ​ (58) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (58) Conversion of restricted awards to Venator awards ​ — ​ ​ — ​ ​ (2) ​ ​ — ​ ​ 2 ​ ​ — ​ ​ — ​ ​ — Dividends declared on common stock ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (120) ​ ​ — ​ ​ (120) Balance, December 31, 2017 ​ 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 ​ 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, ​ ​ 2019 ​ 2018 ​ 2017 Operating Activities: ​ ​ ​ Net income ​ $ 562 ​ $ 337 ​ $ 636 Equity in income of subsidiaries ​ (401) ​ (163) ​ (501) Stock-based compensation ​ 1 ​ 1 ​ 1 Noncash interest income ​ (15) ​ (21) ​ (16) Changes in operating assets and liabilities ​ 13 ​ 19 ​ 10 Net cash provided by operating activities ​ 160 ​ 173 ​ 130 Investing Activities: ​ ​ ​ Loan to affiliate ​ — ​ — ​ (47) Repayments of loan by affiliate ​ 207 ​ 255 ​ — Net cash provided by (used in) investing activities ​ 207 ​ 255 ​ (47) Financing Activities: ​ ​ ​ Dividends paid to common stockholders ​ (150) ​ (156) ​ (120) Repurchase and cancellation of stock awards ​ (12) ​ (30) ​ (12) Proceeds from issuance of common stock ​ 2 ​ 17 ​ 35 Repurchase of common stock ​ (208) ​ (277) ​ — Increase in payable to affiliates ​ 1 ​ 16 ​ 15 Net cash used in financing activities ​ (367) ​ (430) ​ (82) (Decrease) increase in cash and cash equivalents ​ — ​ (2) ​ 1 Cash and cash equivalents at beginning of period ​ — ​ 2 ​ 1 Cash and cash equivalents at end of period ​ $ — ​ $ — ​ $ 2 This statement should be read in conjunction with the notes to the consolidated financial statements.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2019
Schedule II - Valuation and Qualifying Accounts
Schedule II - Valuation and Qualifying Accounts	Schedule II—Valuation and Qualifying Accounts (In Millions) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Column A Column B Column C ​ Column D Column E ​ ​ ​ ​ Additions ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Charges ​ ​ ​ ​ ​ ​ ​ ​ Balance at ​ (credits) ​ Charged ​ ​ ​ Balance ​ ​ beginning ​ to cost and ​ to other ​ ​ ​ at end Description ​ of period expenses ​ accounts ​ Deductions ​ of period Allowance for doubtful accounts: ​ ​ ​ ​ ​ Year ended December 31, 2019 ​ $ 21 ​ $ 1 ​ $ (3) ​ $ — ​ $ 19 Year ended December 31, 2018 ​ 24 ​ 2 ​ (5) ​ ​ — ​ ​ 21 Year ended December 31, 2017 ​ 23 ​ 3 ​ (2) ​ — ​ 24 ​
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Schedule II - Valuation and Qualifying Accounts
Schedule II - Valuation and Qualifying Accounts	Schedule II—Valuation and Qualifying Accounts (In Millions) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Column A Column B Column C Column D Column E ​ Additions ​ ​ Charges ​ ​ ​ ​ Balance at (credits) Charged ​ ​ Balance ​ beginning to cost and to other ​ ​ at end Description ​ of period expenses ​ accounts ​ Deductions ​ of period Allowance for doubtful accounts: ​ ​ ​ ​ ​ Year ended December 31, 2019 ​ $ 21 ​ $ 1 ​ $ (3) ​ $ — ​ $ 19 Year ended December 31, 2018 ​ ​ 24 ​ ​ 2 ​ ​ (5) ​ ​ — ​ ​ 21 Year ended December 31, 2017 ​ 23 ​ 3 ​ (2) ​ — ​ ​ 24

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
CARRYING VALUE OF LONG-LIVED ASSETS	Carrying Value of Long-Lived Assets 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 be recoverable. Recoverability is based upon current and anticipated undiscounted cash flows, and we recognize an impairment when such estimated cash flows are less than the carrying value of the asset. Measurement of the amount of impairment, if any, is based upon the difference between carrying value and fair value. Fair value is generally estimated by discounting estimated future cash flows using a discount rate commensurate with the risks involved or selling price of assets held for sale.
CASH AND CASH EQUIVALENTS	Cash and Cash Equivalents We consider cash in checking accounts and cash in short-term highly liquid investments with remaining maturities of three months or less at the date of purchase, to be cash and cash equivalents.
COST OF GOODS SOLD	Cost of Goods Sold 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 AND HEDGING ACTIVITIES	Derivatives and Hedging Activities All derivatives, whether designated in hedging relationships or not, are recorded on our balance sheet at fair value. If the derivative is designated as a fair value hedge, the changes in the fair value of the derivative and the hedged items are recognized in earnings. If the derivative is designated as a cash flow hedge, changes in the fair value of the derivative are recorded in accumulated other comprehensive loss, to the extent effective, and will be recognized in the income statement when the hedged item affects earnings. Changes in the fair value of the hedge in the net investment of certain international operations are recorded in other comprehensive income (loss), to the extent effective. The effectiveness of a cash flow hedging relationship is established at the inception of the hedge, and after inception we perform effectiveness assessments at least every three months. A derivative designated as a cash flow hedge is determined to be effective if the change in value of the hedge divided by the change in value of the hedged item is within a range of 80% to 125%. Hedge ineffectiveness in a cash flow hedge occurs only if the cumulative gain or loss on the derivative hedging instrument exceeds the cumulative change in the expected future cash flows on the hedged transaction. For a derivative that does not qualify or has not been designated as a hedge, changes in fair value are recognized in earnings.
ENVIRONMENTAL EXPENDITURES	Environmental Expenditures 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. Environmental, Health and Safety Matters.”
EQUITY METHOD INVESTMENTS	Equity Method Investments 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. We elected the fair value option to account for our equity method investment in Venator. For more information, see “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator.” The change in the fair value related to our equity method investment in Venator is presented in “Fair value adjustments to Venator investment” on the consolidated statements of operations.
FOREIGN CURRENCY TRANSLATION	Foreign Currency Translation 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-year period), the U.S. dollar is considered to be the functional currency and gains and losses from remeasurement to the U.S. dollar from the local currency are included in the statement of operations. Where a subsidiary’s operations are effectively run, managed, financed and contracted in U.S. dollars, such as certain finance subsidiaries outside of the U.S., the U.S. dollar is considered to be the functional currency. Foreign currency transaction gains and losses are recorded in other operating expense (income), net in our consolidated statements of operations and were (losses) gains of $(8) million, $3 million and $5 million for the years ended December 31, 2019, 2018 and 2017, respectively.
INCOME TAXES	Income Taxes 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 that they will be realized. Valuation allowances are reviewed on a tax jurisdiction basis to analyze whether there is sufficient positive or negative evidence to support a change in judgment about the realizability of the related deferred tax assets for each jurisdiction. These conclusions require significant judgment. In evaluating the objective evidence that historical results provide, we consider the cyclicality of businesses and cumulative income or losses during the applicable period. Cumulative losses incurred over the period limits our ability to consider other subjective evidence such as our projections for the future. Changes in expected future income in applicable jurisdictions could affect the realization of deferred tax assets in those jurisdictions. On December 22, 2017, the U.S. Tax Reform Act was signed into law. The U.S. Tax Reform Act significantly revised the U.S. corporate income tax regime by, among other things, lowering the U.S. corporate tax rate from 35% to 21%, (effective January 1, 2018), creation of the base erosion anti-abuse tax provision (“BEAT”) and a new provision designed to tax global intangible low-taxed income (“GILTI”) (effective January 1, 2018) and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. As a result of the enactment of the U.S. Tax Reform Act, the Company recorded a net tax benefit of $20 million over 2017 and 2018. We recorded a net tax benefit of $135 million due to a remeasurement of deferred U.S. tax assets and liabilities (including a provisional tax benefit of $137 million in 2017, partially offset by a final tax expense of $2 million in 2018) offset by tax expense of $115 million due to the transition tax on the deemed repatriation of deferred foreign income (including a provisional tax expense of $85 million in 2017 and a $30 million measurement period adjustment in 2018). We did not make the election to reclassify the income tax effects of the U.S. Tax Reform Act from accumulated other comprehensive income to retained earnings. ​ 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 to be realized based on the merits of the position under tax law, in order to recognize an income tax benefit. This requires us to make significant judgments regarding the merits of income tax positions and the application of income tax law. Additionally, if a tax position meets the recognition criteria of more-likely-than-not we are required to make judgments and apply assumptions to measure the amount of the tax benefits to recognize. These judgments are based on the probability of the amount of tax benefits that would be realized if the tax position was challenged by the taxing authorities. Interpretations and guidance surrounding income tax laws and regulations change over time. As a consequence, changes in assumptions and judgments can materially affect amounts recognized in our consolidated financial statements. For further information concerning taxes, see “Note 20. Income Taxes.”
INTANGIBLE ASSETS AND GOODWILL	Intangible Assets and Goodwill 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: ​ Patents and technology 5 - 30 years Trademarks 9 - 30 years Licenses and other agreements 5 - 15 years Other intangibles 5 - 15 years ​ Goodwill represents costs in excess of fair values assigned to the underlying net assets of acquired businesses. Goodwill is not subject to any method of amortization, but is tested for impairment annually (at the beginning of the third quarter) and when events and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. When the fair value is less than the carrying value of the related reporting unit, we are required to reduce the amount of goodwill through a charge to earnings. Fair value is estimated using the market approach, as well as the income approach based on discounted cash flow projections. Goodwill has been assigned to reporting units for purposes of impairment testing. ​ During 2019, goodwill decreased by approximately $2 million due to the finalization of the valuation of the assets and liabilities of an acquisition, partially offset by a net increase of approximately $1 million due to changes in foreign currency exchange rates. See “Note 3. Business Combinations and Acquisitions.”
INVENTORIES	Inventories ​ Inventories are stated at the lower of cost or market, with cost determined using LIFO, first-in first-out, and average costs methods for different components of inventory.
LEGAL COSTS	Legal Costs We expense legal costs, including those legal costs incurred in connection with a loss contingency, as incurred.
NET INCOME PER SHARE ATTRIBUTABLE TO HUNTSMAN CORPORATION	Net Income Per Share Attributable to Huntsman Corporation 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, ​ 2019 2018 2017 Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted income from continuing operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation ​ $ 393 ​ $ 608 ​ $ 406 Basic and diluted net income: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income attributable to Huntsman Corporation $ 562 ​ $ 337 ​ $ 636 Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares outstanding ​ ​ 228.9 ​ ​ 238.1 ​ ​ 238.4 Dilutive shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock-based awards ​ ​ 1.7 ​ ​ 3.5 ​ ​ 5.5 Total weighted average shares outstanding, including dilutive shares ​ ​ 230.6 ​ ​ 241.6 ​ ​ 243.9 ​ Additional stock-based awards of 3.0 million, 0.8 million and 0.8 million weighted average equivalent shares of stock were outstanding during the years ended December 31, 2019, 2018 and 2017, respectively. However, these stock-based awards were not included in the computation of diluted earnings per share for the respective periods mentioned because the effect would be anti-dilutive.
OTHER NONCURRENT ASSETS	Other Noncurrent Assets 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.
PRINCIPLES OF CONSOLIDATION	Principles of Consolidation 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	Property, Plant and Equipment 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: ​ Buildings and equipment 5 - 50 years Plant and equipment 3 - 30 years Furniture, fixtures and leasehold improvements 5 - 20 years ​ Interest expense capitalized as part of plant and equipment was $4 million, $4 million and $9 million for the years ended December 31, 2019, 2018 and 2017, respectively. 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.
RECLASSIFICATIONS	Reclassifications ​ Certain amounts in the consolidated financial statements for prior periods have been reclassified to conform with the current presentation. These reclassifications were to record the assets and liabilities of our Chemical Intermediates Businesses as held for sale and its results of operations as discontinued operations. See “Note 1. General—Recent Developments—Sale of Chemical Intermediates Businesses” as well as “Note 4. Discontinued Operations and Business Dispositions—Sale of Chemical Intermediates Businesses.”
REVENUE RECOGNITION	Revenue Recognition ​ 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. See “Note 18. Revenue Recognition.”
SECURITIZATION OF ACCOUNTS RECEIVABLE	Securitization of Accounts Receivable 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. Debt—Direct and Subsidiary Debt—A/R Programs.”
STOCK-BASED COMPENSATION	Stock-Based Compensation 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. Stock-Based Compensation Plan.”
USE OF ESTIMATES	Use of Estimates The preparation of financial statements in conformity with 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.
ACCOUNTING PRONOUNCEMENTS ADOPTED DURING 2019	Accounting Pronouncements Adopted During 2019 ​ In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, Leases (Topic 842) among entities by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The amendments in this ASU require lessees to recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. In January 2018, the FASB issued ASU No. 2018-01, Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842 Leases (Topic 842): Targeted Improvements ​ In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities ​ In August 2018, the SEC issued a final rule, SEC Final Rule Release No. 33-10532, Disclosure Update and Simplification ​ Accounting Pronouncements Pending Adoption in Future Periods ​ In August 2018, the FASB issued ASU No. 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans ​ In August 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Schedule of estimated useful lives of intangible assets or life of the related agreement	​ Patents and technology 5 - 30 years Trademarks 9 - 30 years Licenses and other agreements 5 - 15 years Other intangibles 5 - 15 years
Schedule of basic and diluted income (loss) per share	Basic and diluted income per share is determined using the following information (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Numerator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted income from continuing operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation ​ $ 393 ​ $ 608 ​ $ 406 Basic and diluted net income: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income attributable to Huntsman Corporation $ 562 ​ $ 337 ​ $ 636 Denominator: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares outstanding ​ ​ 228.9 ​ ​ 238.1 ​ ​ 238.4 Dilutive shares: ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock-based awards ​ ​ 1.7 ​ ​ 3.5 ​ ​ 5.5 Total weighted average shares outstanding, including dilutive shares ​ ​ 230.6 ​ ​ 241.6 ​ ​ 243.9
Schedule of estimated useful lives or lease term of property, plant and equipment	​ Buildings and equipment 5 - 50 years Plant and equipment 3 - 30 years Furniture, fixtures and leasehold improvements 5 - 20 years

BUSINESS COMBINATIONS AND ACQ_2

BUSINESS COMBINATIONS AND ACQUISITIONS (Tables)	12 Months Ended
	Dec. 31, 2019
BUSINESS COMBINATIONS
Schedule of effects of changes in ownership interest in joint venture	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 ​ 2017 Net income attributable to Huntsman Corporation shareholders $ 562 ​ $ 337 ​ $ 636 ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ $ 636
Schedule of allocation of acquisition cost to the assets acquired and liabilities assumed	​ ​ ​ ​ ​ Fair value of assets acquired and liabilities assumed: ​ ​ ​ Cash paid for the Demilec Acquisition in Q2 2018 ​ $ 357 Purchase price adjustment received in Q3 2018 ​ ​ (4) Net acquisition cost ​ $ 353 ​ ​ ​ ​ Cash ​ $ 1 Accounts receivable ​ ​ 31 Inventories ​ ​ 23 Prepaid expenses and other current assets ​ ​ 1 Property, plant and equipment, net ​ ​ 21 Intangible assets ​ ​ 177 Goodwill ​ ​ 140 Accounts payable ​ ​ (16) Accrued liabilities ​ ​ (3) Deferred income taxes ​ ​ (22) Other noncurrent liabilities ​ ​ — Total fair value of net assets acquired ​ $ 353
Schedule of estimated pro forma revenues and net income	If this acquisition were to have occurred on January 1, 2017, the following estimated pro forma revenues, net income, net income attributable to Huntsman Corporation and Huntsman International and income per share for Huntsman Corporation would have been reported (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ Pro Forma (Unaudited) ​ Year ended December 31, ​ 2018 ​ 2017 Revenues $ 7,662 ​ $ 7,010 Net income ​ 639 ​ ​ 728 Net income attributable to Huntsman Corporation ​ 326 ​ ​ 623
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
BUSINESS COMBINATIONS
Schedule of effects of changes in ownership interest in joint venture	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 ​ 2018 ​ 2017 Net income attributable to Huntsman International shareholders $ 551 ​ $ 323 ​ $ 629 ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ $ 629
Schedule of estimated pro forma revenues and net income	​ ​ ​ ​ ​ ​ ​ ​ Pro Forma (Unaudited) ​ Year ended December 31, ​ 2018 ​ 2017 Revenues $ 7,662 ​ $ 7,010 Net income ​ 625 ​ ​ 721 Net income attributable to Huntsman International ​ 312 ​ ​ 616

DISCONTINUED OPERATIONS AND B_2

DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS (Tables)	12 Months Ended
	Dec. 31, 2019
BUSINESS DISPOSITIONS
Summary of major classes of line items of discontinued operations	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ ​ 2019 2018 Carrying amounts of major classes of assets held for sale: ​ ​ ​ ​ ​ ​ Accounts receivable ​ $ 145 ​ $ 89 Inventories ​ ​ 105 ​ ​ 134 Other current assets ​ ​ — ​ ​ 9 Total current assets ​ ​ ​ ​ ​ 232 Property, plant and equipment, net ​ ​ 720 ​ ​ 711 Operating lease right-of-use assets ​ ​ 69 ​ ​ — Deferred income taxes ​ ​ 4 ​ ​ — Other noncurrent assets ​ ​ 165 ​ ​ 166 Total noncurrent assets ​ ​ ​ ​ ​ 877 Total assets held for sale(1) ​ $ 1,208 ​ $ 1,109 Carrying amounts of major classes of liabilities held for sale: ​ ​ ​ ​ ​ ​ Accounts payable ​ $ 152 ​ $ 168 Accrued liabilities ​ ​ 26 ​ ​ 57 Current operating lease liabilities ​ ​ 20 ​ ​ — Total current liabilities ​ ​ ​ ​ ​ 225 Deferred income taxes ​ ​ 135 ​ ​ 159 Noncurrent operating lease liabilities ​ ​ 51 ​ ​ — Other noncurrent liabilities ​ ​ 128 ​ ​ 124 Total noncurrent liabilities ​ ​ ​ ​ ​ 283 Total liabilities held for sale(1) ​ $ 512 ​ $ 508 (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. 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, ​ 2019 ​ 2018 ​ 2017 Major line items constituting pretax income of discontinued operations(1): ​ ​ ​ ​ ​ ​ ​ ​ Trade sales, services and fees, net(2) $ 1,545 ​ $ 3,923 ​ $ 3,747 Cost of goods sold(2) ​ 1,287 ​ ​ 2,847 ​ ​ 3,198 Other expense items, net that are not major ​ 54 ​ ​ 332 ​ ​ 208 Income from discontinued operations before income taxes ​ 204 ​ ​ 744 ​ ​ 341 Income tax expense ​ (35) ​ ​ (86) ​ ​ (111) Loss on disposal ​ — ​ ​ (427) ​ ​ — Valuation allowance ​ — ​ ​ (270) ​ ​ — Income (loss) from discontinued operations, net of tax ​ 169 ​ ​ (39) ​ ​ 230 Net income attributable to noncontrolling interests ​ — ​ ​ (6) ​ ​ (10) Net income (loss) attributable to discontinued operations $ 169 ​ $ (45) ​ $ 220
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
BUSINESS DISPOSITIONS
Summary of major classes of line items of discontinued operations	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 ​ 2018 ​ 2017 Major line items constituting pretax income of discontinued operations(1): ​ ​ ​ ​ ​ ​ ​ ​ Trade sales, services and fees, net(2) $ 1,545 ​ $ 3,923 ​ $ 3,747 Cost of goods sold(2) ​ 1,287 ​ ​ 2,847 ​ ​ 3,201 Other expense items, net that are not major ​ 54 ​ ​ 332 ​ ​ 208 Income from discontinued operations before income taxes ​ 204 ​ ​ 744 ​ ​ 338 Income tax expense ​ (35) ​ ​ (86) ​ ​ (111) Loss on disposal ​ — ​ ​ (427) ​ ​ — Valuation allowance ​ — ​ ​ (270) ​ ​ — Income (loss) from discontinued operations, net of tax ​ 169 ​ ​ (39) ​ ​ 227 Net income attributable to noncontrolling interests ​ — ​ ​ (6) ​ ​ (10) Net income (loss) attributable to discontinued operations $ 169 ​ $ (45) ​ $ 217 (1) Discontinued operations include our Chemical Intermediates Businesses, our Australian styrenics operations and our North American polymers and base chemicals operations 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. ​ (2) Includes eliminations of trade sales, services and fees, net and cost of sales between continuing operations and discontinued operations.

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2019
INVENTORIES
Schedule of inventory	Inventories consisted of the following (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 2018 Raw materials and supplies ​ $ 175 ​ $ 191 Work in progress ​ ​ 49 ​ ​ 51 Finished goods ​ ​ 718 ​ ​ 798 Total ​ ​ 942 ​ ​ 1,040 LIFO reserves ​ ​ (28) ​ ​ (40) Net inventories ​ $ 914 ​ $ 1,000

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT
Schedule of cost and accumulated depreciation of property, plant and equipment	The cost and accumulated depreciation of property, plant and equipment were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Land ​ $ 103 ​ $ 105 Buildings ​ 605 ​ 602 Plant and equipment ​ 4,695 ​ 4,550 Construction in progress ​ 285 ​ 249 Total ​ 5,688 ​ 5,506 Less accumulated depreciation ​ (3,305) ​ (3,153) Net ​ $ 2,383 ​ $ 2,353
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
PROPERTY, PLANT AND EQUIPMENT
Schedule of cost and accumulated depreciation of property, plant and equipment	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Land ​ $ 103 ​ $ 105 Buildings ​ 605 ​ 602 Plant and equipment ​ 4,749 ​ 4,604 Construction in progress ​ 285 ​ 249 Total ​ 5,742 ​ 5,560 Less accumulated depreciation ​ (3,359) ​ (3,207) Net ​ $ 2,383 ​ $ 2,353

INVESTMENT IN UNCONSOLIDATED _2

INVESTMENT IN UNCONSOLIDATED AFFILIATES (Tables)	12 Months Ended
	Dec. 31, 2019
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Schedule of ownership percentage and investment in unconsolidated affiliates	Our ownership percentage and investment in unconsolidated affiliates were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Equity Method: ​ ​ ​ ​ ​ ​ Venator Materials PLC (49%)(1) ​ $ 200 ​ $ 219 BASF Huntsman Shanghai Isocyanate Investment BV (50%)(2) ​ ​ 112 ​ ​ 120 Nanjing Jinling Huntsman New Material Co., Ltd. (49%) ​ 196 ​ 163 Jurong Ningwu New Material Development Co., Ltd. (30%) ​ 27 ​ 24 Total investments ​ $ 535 ​ $ 526 (1) We account for our remaining investment in Venator as an equity method investment using the fair value option. For more information see “Note 4. Discontinued Operations and Business Dispositions—Separation and Deconsolidation of Venator.” ​ (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. ​
Summarized financial information of our unconsolidated affiliates	Summarized financial information of our unconsolidated affiliates as of December 31, 2019 and 2018 and for the years ended December 31, 2019, 2018 and 2017 is as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Current assets ​ $ 1,439 ​ $ 1,548 Non-current assets ​ ​ 2,436 ​ ​ 2,444 Current liabilities ​ ​ 688 ​ ​ 781 Non-current liabilities ​ 1,614 ​ 1,683 Noncontrolling interests ​ 7 ​ 8 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019(1) 2018(1) 2017 Revenues ​ $ 4,025 ​ $ 2,181 ​ $ 1,109 Gross profit ​ 454 ​ ​ 221 ​ ​ 112 Income from continuing operations ​ 99 ​ ​ 124 ​ ​ 34 Net income ​ ​ 99 ​ ​ 124 ​ ​ 34 (1) We began accounting for our investment in Venator as an equity method investment on December 3, 2018. Therefore, the summarized financial data only includes information for Venator for the year ended December 31, 2019 and the period from December 3, 2018 through December 31, 2018.

VARIABLE INTEREST ENTITIES (Tab

VARIABLE INTEREST ENTITIES (Tables)	12 Months Ended
	Dec. 31, 2019
VARIABLE INTEREST ENTITIES
Schedule of financial information of VIE's	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, 2019 and 2018 (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019(1) 2018 Current assets ​ $ 50 ​ $ 92 Property, plant and equipment, net ​ ​ 180 ​ ​ 265 Operating lease right-of-use assets ​ ​ 16 ​ ​ — Other noncurrent assets ​ ​ 132 ​ ​ 136 Deferred income taxes ​ ​ 30 ​ ​ 32 Intangible assets ​ ​ — ​ ​ 10 Goodwill ​ ​ — ​ ​ 14 Total assets ​ $ 408 ​ $ 549 Current liabilities ​ $ 151 ​ $ 178 Long-term debt ​ ​ 29 ​ ​ 61 Deferred income taxes ​ ​ — ​ ​ 11 Noncurrent operating lease liabilities ​ ​ 11 ​ ​ — Other noncurrent liabilities ​ ​ 87 ​ ​ 97 Total liabilities ​ $ 278 ​ $ 347 (1) ​ 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, ​ 2019(1) 2018 2017 Revenues ​ $ 95 ​ $ 154 ​ $ 132 Income from continuing operations before income taxes ​ 17 ​ 40 ​ 25 Net cash provided by operating activities ​ 81 ​ 65 ​ 51 (1) 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.

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2019
LEASES
Schedule of components of operating lease expense, cash flows and supplemental noncash information	The components of operating lease expense, cash flows and supplemental noncash information from continuing operations are as follows (dollars in millions): ​ ​ ​ ​ ​ Year ended ​ December 31, 2019 Operating lease expense: ​ ​ Cost of goods sold $ 35 Selling, general and administrative ​ 15 Research and development ​ 6 Total operating lease expense(1)(2) $ 56 ​ ​ ​ Cash paid for amounts included in the measurement of lease liabilities: ​ ​ Operating cash flows from operating leases $ 53 ​ ​ ​ Supplemental noncash information: ​ ​ Leased assets obtained in exchange for new operating lease liabilities $ 416 (1) Total operating lease expense includes short-term lease expense of approximately $1 million for the year ended December 31, 2019. (2) Total operating lease expense for the years ended December 31, 2018 and 2017 were $55 million and $60 million, respectively.
Schedule of lease term and discount rate	​ ​ ​ Weighted-average remaining lease term 11 years Weighted-average discount rate 4.1%
Schedule of undiscounted cash flows of operating lease liabilities	​ ​ ​ Year ending December 31, ​ ​ 2020 $ 58 2021 ​ 57 2022 ​ 52 2023 ​ 48 2024 ​ 45 Thereafter ​ 268 Total lease payments ​ 528 Less imputed interest ​ (102) Total $ 426 ​
Schedule of future minimum lease payments under operating leases	Future minimum lease payments under operating leases from continuing operations as of December 31, 2018 are as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ ​ 2019 $ 37 2020 ​ 33 2021 ​ 36 2022 ​ 34 2023 ​ 32 Thereafter ​ 224 ​ $ 396 ​

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2019
INTANGIBLE ASSETS
Schedule of gross carrying amount and accumulated amortization of intangible assets	The gross carrying amount and accumulated amortization of intangible assets were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ Carrying Accumulated ​ Carrying Accumulated ​ ​ ​ Amount ​ Amortization ​ Net ​ Amount ​ Amortization ​ Net Patents, trademarks and technology ​ $ 314 ​ $ 230 ​ $ 84 ​ $ 293 ​ $ 209 ​ $ 84 Licenses and other agreements ​ 140 ​ 48 ​ 92 ​ 134 ​ 29 ​ 105 Non-compete agreements ​ 3 ​ 2 ​ 1 ​ 3 ​ 2 ​ 1 Other intangibles ​ 61 ​ 41 ​ 20 ​ 64 ​ 41 ​ 23 Total ​ $ 518 ​ $ 321 ​ $ 197 ​ $ 494 ​ $ 281 ​ $ 213 ​
Schedule of estimated future amortization expense for intangible assets	Our and Huntsman International’s estimated future amortization expense for intangible assets over the next five years is as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ 2020 $ 16 2021 ​ ​ 15 2022 ​ ​ 15 2023 ​ ​ 15 2024 ​ ​ 15
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
INTANGIBLE ASSETS
Schedule of gross carrying amount and accumulated amortization of intangible assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ Carrying Accumulated ​ Carrying Accumulated ​ ​ ​ Amount ​ Amortization ​ Net ​ Amount ​ Amortization ​ Net Patents, trademarks and technology ​ $ 314 ​ $ 230 ​ $ 84 ​ $ 293 ​ $ 209 ​ $ 84 Licenses and other agreements ​ 140 ​ 48 ​ 92 ​ 134 ​ 29 ​ 105 Non-compete agreements ​ 3 ​ 2 ​ 1 ​ 3 ​ 2 ​ 1 Other intangibles ​ 70 ​ 50 ​ 20 ​ 72 ​ 49 ​ 23 Total ​ $ 527 ​ $ 330 ​ $ 197 ​ $ 502 ​ $ 289 ​ $ 213

OTHER NONCURRENT ASSETS (Tables

OTHER NONCURRENT ASSETS (Tables)	12 Months Ended
	Dec. 31, 2019
OTHER NONCURRENT ASSETS
Schedule of other noncurrent assets	Other noncurrent assets consisted of the following (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Capitalized turnaround costs, net ​ $ 223 ​ $ 172 Catalyst assets, net ​ 24 ​ 26 Other ​ 205 ​ 195 Total ​ $ 452 ​ $ 393

ACCRUED LIABILITIES (Tables)

ACCRUED LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Accrued Liabilities
Schedule of accrued liabilities	Accrued liabilities consisted of the following (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Payroll and related accruals ​ $ 100 ​ $ 126 Taxes other than income taxes ​ 64 ​ 44 Income taxes ​ 59 ​ 86 Volume and rebate accruals ​ 53 ​ 59 Other miscellaneous accruals ​ 144 ​ 182 Total ​ $ 420 ​ $ 497 ​
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Accrued Liabilities
Schedule of accrued liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Payroll and related accruals ​ $ 100 ​ $ 126 Taxes other than income taxes ​ 64 ​ 44 Income taxes ​ 59 ​ 86 Volume and rebate accruals ​ 53 ​ 59 Other miscellaneous accruals ​ 141 ​ 179 Total ​ $ 417 ​ $ 494

OTHER NONCURRENT LIABILITIES (T

OTHER NONCURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2019
OTHER NONCURRENT LIABILITIES
Schedule of components of other noncurrent liabilities	Other noncurrent liabilities consisted of the following (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Pension liabilities ​ $ 650 ​ $ 664 Other postretirement benefits ​ 55 ​ 54 Employee benefit accrual ​ 38 ​ 32 Other ​ 155 ​ 199 Total ​ $ 898 ​ $ 949 ​
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
OTHER NONCURRENT LIABILITIES
Schedule of components of other noncurrent liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 2018 Pension liabilities $ 650 $ 664 Other postretirement benefits ​ 55 ​ 54 Employee benefit accrual ​ 38 ​ 32 Other ​ 147 ​ 187 Total ​ $ 890 ​ $ 937

DEBT (Tables)

DEBT (Tables)	12 Months Ended
	Dec. 31, 2019
Debt
Schedule of outstanding debt	Outstanding debt, net of debt issuance costs, of consolidated entities consisted of the following (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 ​ 2018 Senior Credit Facilities: ​ ​ ​ ​ ​ Revolving facility ​ $ 40 ​ $ 50 Amounts outstanding under A/R programs ​ ​ 167 ​ ​ 252 Term loan ​ ​ 103 ​ ​ — Senior notes ​ ​ 1,963 ​ ​ 1,892 Variable interest entities ​ ​ 65 ​ ​ 86 Other ​ ​ 51 ​ ​ 40 Total debt ​ $ 2,389 ​ $ 2,320 Total current portion of debt ​ $ 212 ​ $ 96 Long-term portion of debt ​ ​ 2,177 ​ ​ 2,224 Total debt ​ $ 2,389 ​ $ 2,320 ​
Schedule of maturities of debt (excluding debt to affiliates)	The scheduled maturities of our debt (excluding debt to affiliates) by year as of December 31, 2019 are as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ ​ 2020 ​ $ 212 2021 ​ 522 2022 ​ 570 2023 ​ 1 2024 ​ 2 Thereafter ​ 1,082 ​ ​ $ 2,389
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Schedule of outstanding debt	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 ​ 2018 Senior Credit Facilities: ​ ​ ​ ​ ​ ​ Revolving facility ​ $ 40 ​ $ 50 Amounts outstanding under A/R programs ​ ​ 167 ​ ​ 252 Term loan ​ ​ 103 ​ ​ — Senior notes ​ ​ 1,963 ​ ​ 1,892 Variable interest entities ​ ​ 65 ​ ​ 86 Other ​ ​ 51 ​ ​ 40 Total debt, excluding debt to affiliates ​ $ 2,389 ​ $ 2,320 Total current portion of debt ​ $ 212 ​ $ 96 Long-term portion of debt ​ ​ 2,177 ​ ​ 2,224 Total debt, excluding debt to affiliates ​ $ 2,389 ​ $ 2,320 Notes payable to affiliates-current ​ ​ 100 ​ ​ 100 Notes payable to affiliates-noncurrent ​ ​ 280 ​ ​ 488 Total debt ​ $ 2,769 ​ $ 2,908 ​
Schedule of 2018 Credit Facility	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unamortized ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Discounts and ​ ​ ​ ​ ​ ​ ​ ​ Committed ​ Principal ​ Debt Issuance ​ Carrying ​ ​ ​ ​ Facility ​ Amount Outstanding Costs Value Interest Rate(2) Maturity 2018 Revolving Credit Facility ​ $ 1,200 ​ $ 40 (1) $ — (1) $ 40 (1) USD LIBOR plus 1.50% ​ 2023 (1) On December 31, 2019, we had an additional $7 million (U.S. dollar equivalents) of letters of credit and bank guarantees issued and outstanding under our 2018 Revolving Credit Facility. ​ (2) Interest rates on borrowings under the 2018 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, 2019 was 1.50% above LIBOR.
Schedule of A/R Programs	Information regarding our A/R Programs as of December 31, 2019 was as follows (monetary amounts in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Maximum Funding Amount ​ Facility Maturity Availability(1) Outstanding Interest Rate(2) U.S. A/R Program April 2022 ​ $ 250 ​ $ 100 (3) Applicable rate plus 0.90% EU A/R Program April 2022 ​ € 100 ​ € 60 Applicable rate plus 1.30% ​ ​ ​ ​ ​ (or approximately $112) ​ ​ (or approximately $67) ​ ​ (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) 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, 2019, we had approximately $5 million (U.S. dollar equivalents) of letters of credit issued and outstanding under our U.S. A/R Program.
Summary of outstanding notes	As of December 31, 2019, we had outstanding the following notes (monetary amounts in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unamortized ​ ​ ​ ​ ​ ​ ​ ​ Premiums, ​ ​ ​ ​ ​ ​ ​ ​ Discounts ​ ​ ​ ​ ​ ​ ​ ​ and Debt Notes Maturity Interest Rate Amount Outstanding Issuance Costs 2021 Senior Notes April 2021 5.125 % €445 (€445 carrying value $(496)) ​ $ — 2022 Senior Notes November 2022 5.125 % $400 ($398 carrying value) ​ ​ (2) 2025 Senior Notes April 2025 4.250 % €300 (€298 carrying value $(333)) ​ ​ (2) 2029 Senior Notes February 2029 4.500 % $750 ($736 carrying value) ​ ​ (14)

FAIR VALUE (Tables)

FAIR VALUE (Tables)	12 Months Ended
	Dec. 31, 2019
FAIR VALUE
Schedule of fair values of financial instruments	The fair values of our financial instruments were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ Carrying ​ Estimated ​ Carrying ​ Estimated ​ Value Fair Value Value Fair Value Non-qualified employee benefit plan investments $ 28 ​ $ 28 ​ $ 23 ​ $ 23 Forward swap contract related to the sale of investment in Venator ​ — ​ ​ — ​ ​ 14 ​ ​ 14 Long-term debt (including current portion) ​ (2,389) ​ ​ (2,544) ​ ​ (2,320) ​ ​ (2,403)
Schedule of assets and liabilities are measured at fair value on a recurring basis	The following assets and liabilities are measured at fair value on a recurring basis (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Amounts Using ​ ​ ​ ​ ​ Quoted prices ​ Significant other ​ Significant ​ ​ ​ ​ ​ in active markets ​ observable ​ unobservable ​ ​ December 31, ​ for identical ​ inputs ​ inputs Description 2019 assets (Level 1) (Level 2) (Level 3) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equity securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Non-qualified employee benefit plan investments ​ $ 28 ​ $ 28 ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Amounts Using ​ ​ ​ ​ ​ Quoted prices ​ Significant other ​ Significant ​ ​ ​ ​ ​ in active markets ​ observable ​ unobservable ​ ​ December 31, ​ for identical ​ inputs ​ inputs Description 2018 assets (Level 1) (Level 2) (Level 3) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equity securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Non-qualified employee benefit plan investments ​ $ 23 ​ $ 23 ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Forward swap contract related to the sale of investment in Venator(1) ​ ​ 14 ​ ​ — ​ ​ 14 ​ ​ — ​ ​ $ 37 ​ $ 23 ​ $ 14 ​ $ — (1) In connection with the December 3, 2018 sale of Venator ordinary shares to Bank of America N.A., we recorded a forward swap. In February 2019, we settled this forward swap and received $16 million from the counterparty.

REVENUE RECOGNITION (Tables)

REVENUE RECOGNITION (Tables)	12 Months Ended
	Dec. 31, 2019
REVENUE RECOGNITION
Schedule of disaggregation of revenue by major source	The following table disaggregates our revenue by major source for the years ended December 31, 2019 and 2018 (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 and digital inks ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 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 and digital inks ​ ​ ​ ​ ​ ​ ​ ​ ​ $ 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. ​

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2019
EMPLOYEE BENEFIT PLANS
Schedule of funded status of the plans and the amounts recognized in the consolidated balance sheets	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, 2019 and 2018 (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ Other Postretirement Benefit Plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 ​ ​ 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 ​ $ 956 ​ $ 2,157 ​ $ 1,028 ​ $ 2,259 ​ $ 59 ​ $ — ​ $ 69 ​ $ — Service cost ​ 20 ​ 30 ​ 23 ​ 32 ​ 1 ​ — ​ 2 ​ — Interest cost ​ 41 ​ 37 ​ 39 ​ 37 ​ 3 ​ — ​ 2 ​ — Participant contributions ​ — ​ 6 ​ — ​ 5 ​ 2 ​ — ​ 2 ​ — Plan amendments ​ — ​ (9) ​ — ​ 4 ​ — ​ — ​ — ​ — Foreign currency exchange rate changes ​ — ​ 7 ​ — ​ (74) ​ — ​ — ​ — ​ — Settlements/transfers/divestitures ​ 20 ​ (2) ​ (6) ​ (3) ​ 1 ​ — ​ — ​ — Actuarial (gain) loss ​ 65 ​ 224 ​ (67) ​ (30) ​ — ​ — ​ (9) ​ — Benefits paid ​ (78) ​ (73) ​ (61) ​ (73) ​ (6) ​ — ​ (7) ​ — Benefit obligation at end of year ​ $ 1,024 ​ $ 2,377 ​ $ 956 ​ $ 2,157 ​ $ 60 ​ $ — ​ $ 59 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in plan assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value of plan assets at beginning of year ​ $ 697 ​ $ 1,751 ​ $ 747 ​ $ 1,883 ​ $ — ​ $ — ​ $ — ​ $ — Actual return on plan assets ​ 107 ​ 224 ​ (27) ​ (38) ​ — ​ — ​ — ​ — Foreign currency exchange rate changes ​ — ​ 11 ​ — ​ (62) ​ — ​ — ​ — ​ — Participant contributions ​ — ​ 6 ​ — ​ 5 ​ 2 ​ — ​ 2 ​ — Settlement/transfers/divestitures ​ ​ 19 ​ ​ (2) ​ ​ (6) ​ ​ (3) ​ ​ — ​ ​ — ​ ​ — ​ ​ — Company contributions ​ 45 ​ 43 ​ 44 ​ 39 ​ 4 ​ — ​ 5 ​ — Benefits paid ​ (78) ​ (73) ​ (61) ​ (73) ​ (6) ​ — ​ (7) ​ ​ — Fair value of plan assets at end of year ​ $ 790 ​ $ 1,960 ​ $ 697 ​ $ 1,751 ​ $ — ​ $ — ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Funded status ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair value of plan assets ​ $ 790 ​ $ 1,960 ​ $ 697 ​ $ 1,751 ​ $ — ​ $ — ​ $ — ​ $ — Benefit obligation ​ 1,024 ​ 2,377 ​ 956 ​ 2,157 ​ 60 ​ — ​ 59 ​ — Accrued benefit cost ​ $ (234) ​ $ (417) ​ $ (259) ​ $ (406) ​ $ (60) ​ $ — ​ $ (59) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amounts recognized in balance sheet: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noncurrent asset ​ $ — ​ $ 10 ​ $ — ​ $ 10 ​ $ — ​ $ — ​ $ — ​ $ — Current liability ​ (5) ​ (6) ​ (5) ​ (6) ​ (5) ​ — ​ (5) ​ — Noncurrent liability ​ (229) ​ (421) ​ (254) ​ (410) ​ (55) ​ — ​ (54) ​ — Total ​ $ (234) ​ $ (417) ​ $ (259) ​ $ (406) ​ $ (60) ​ $ — ​ $ (59) ​ $ — ​
Schedule of amounts recognized in accumulated other comprehensive loss	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ Other Postretirement Benefit Plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 ​ ​ 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 ​ $ 394 ​ $ 840 ​ $ 401 ​ $ 784 ​ $ 20 ​ $ — ​ $ 21 ​ $ — Prior service credit ​ (11) ​ (32) ​ (13) ​ (27) ​ (33) ​ — ​ (38) ​ — Total ​ $ 383 ​ $ 808 ​ $ 388 ​ $ 757 ​ $ (13) ​ $ — ​ $ (17) ​ $ —
Schedule of amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year	The amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost of continuing operations during the next fiscal year are as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement ​ ​ Defined Benefit Plans ​ Benefit Plans ​ ​ ​ ​ ​ Non-U.S. ​ ​ ​ ​ Non-U.S. ​ ​ U.S. Plans ​ Plans ​ U.S. Plans ​ Plans Actuarial loss $ 28 $ 53 $ 1 $ — Prior service credit ​ (2) ​ (5) ​ (5) ​ — Total ​ $ 26 ​ $ 48 ​ $ (4) ​ $ — ​
Components of the net periodic benefit costs	Components of net periodic benefit costs of continuing operations for the years ended December 31, 2019, 2018 and 2017 were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 20 $ 23 $ 22 $ 30 $ 32 $ 33 Interest cost ​ 41 ​ 39 ​ 39 ​ 37 ​ 37 ​ 35 Expected return on plan assets ​ (53) ​ (54) ​ (48) ​ (102) ​ (109) ​ (100) Amortization of prior service credit ​ (2) ​ (2) ​ (2) ​ (4) ​ (5) ​ (5) Amortization of actuarial loss ​ 23 ​ 31 ​ 27 ​ 45 ​ 38 ​ 45 Settlement loss ​ ​ — ​ ​ 2 ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Special termination benefits ​ — ​ — ​ — ​ — ​ — ​ 1 Net periodic benefit cost (credit) ​ $ 29 ​ $ 39 ​ $ 38 ​ $ 7 ​ $ (7) ​ $ 9 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 1 $ 2 $ 2 $ — $ — $ — Interest cost ​ 3 ​ 2 ​ 3 ​ — ​ — ​ — Amortization of prior service credit ​ (5) ​ (5) ​ (6) ​ — ​ — ​ — Amortization of actuarial loss ​ 1 ​ 2 ​ 3 ​ — ​ — ​ — Net periodic benefit cost ​ $ — ​ $ 1 ​ $ 2 ​ $ — ​ $ — ​ $ — ​
Schedule of amounts recognized in net periodic benefit cost and other comprehensive (loss) income	The amounts recognized in net periodic benefit cost and other comprehensive income (loss) as of December 31, 2019, 2018 and 2017 were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss (gain) $ 19 $ 18 $ 42 $ 101 $ 117 $ (42) Amortization of actuarial loss ​ (26) ​ (34) ​ (30) ​ (45) ​ (38) ​ (61) Current year prior service (credits) cost ​ — ​ — ​ — ​ (10) ​ 4 ​ (2) Amortization of prior service credit ​ 2 ​ 2 ​ 2 ​ 4 ​ 5 ​ 4 Settlements ​ ​ — ​ ​ (2) ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Curtailment (gain)/loss ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 3 Total recognized in other comprehensive income (loss) ​ (5) ​ (16) ​ 14 ​ 51 ​ 88 ​ (98) Amounts related to discontinued operations ​ ​ 9 ​ ​ (4) ​ ​ — ​ ​ — ​ ​ — ​ ​ 37 Total recognized in other comprehensive income (loss) in continuing operations ​ ​ 4 ​ ​ (20) ​ ​ 14 ​ ​ 51 ​ ​ 88 ​ ​ (61) Net periodic benefit cost ​ 29 ​ 39 ​ 38 ​ 7 ​ (7) ​ 9 Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ 33 ​ $ 19 ​ $ 52 ​ $ 58 ​ $ 81 ​ $ (52) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss (gain) $ — $ (10) $ (12) $ — $ — $ — Amortization of actuarial loss ​ (1) ​ (2) ​ (3) ​ — ​ — ​ (1) Current year prior service credit ​ — ​ — ​ — ​ — ​ — ​ — Amortization of prior service credit ​ 5 ​ 6 ​ 6 ​ — ​ — ​ 2 Total recognized in other comprehensive income (loss) ​ 4 ​ (6) ​ (9) ​ — ​ — ​ 1 Amounts related to discontinued operations ​ ​ (6) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (1) Total recognized in other comprehensive income (loss) in continuing operations ​ ​ (2) ​ ​ (6) ​ ​ (9) ​ ​ — ​ ​ — ​ ​ — Net periodic benefit cost ​ — ​ 1 ​ 2 ​ — ​ — ​ — Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ (2) ​ $ (5) ​ $ (7) ​ $ — ​ $ — ​ $ — ​
Schedule of weighted-average assumptions used to determine the projected benefit obligation and the net periodic pension cost	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Projected benefit obligation ​ ​ ​ ​ ​ ​ ​ Discount rate 3.59 % 4.39 % 3.74 % 1.07 % 1.75 % 1.65 % Rate of compensation increase 4.09 % 4.10 % 4.10 % 2.65 % 2.95 % 3.38 % Net periodic pension cost ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Discount rate 4.39 % 3.74 % 4.24 % 1.75 % 1.65 % 1.82 % Rate of compensation increase 4.07 % 4.10 % 4.14 % 2.64 % 3.38 % 3.51 % Expected return on plan assets 7.52 % 7.52 % 7.53 % 5.89 % 5.88 % 5.68 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Projected benefit obligation ​ ​ ​ ​ ​ ​ ​ Discount rate 3.46 % 4.26 % 3.58 % 2.90 % 3.50 % 3.30 % Net periodic pension cost ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Discount rate 4.26 % 3.58 % 4.04 % 3.50 % 3.30 % 3.50 %
Schedule of effect of one-percent point change in assumed health care cost trend rates	​ ​ ​ ​ ​ ​ ​ ​ Increase Decrease Asset category ​ ​ ​ ​ ​ ​ Effect on total of service and interest cost ​ $ — ​ $ — Effect on postretirement benefit obligation ​ 2 ​ (1) ​
Schedule of projected benefit obligation and fair value of plan assets for the defined benefit plans with projected benefit obligations in excess of fair value of plan assets	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, 2019 and 2018 were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 Projected benefit obligation in excess of plan assets ​ ​ ​ ​ ​ ​ ​ ​ Projected benefit obligation ​ $ 1,024 ​ $ 956 ​ $ 2,203 ​ $ 1,790 Fair value of plan assets ​ 790 ​ 697 ​ 1,777 ​ 1,375 ​
Schedule of defined benefit plans with an accumulated benefit obligation in excess of fair value of plan assets	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, 2019 and 2018 were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 Accumulated benefit obligation in excess of plan assets ​ ​ ​ ​ ​ ​ ​ ​ Projected benefit obligation ​ $ 1,024 ​ $ 956 ​ $ 1,066 ​ $ 986 Accumulated benefit obligation ​ 1,019 ​ 935 ​ 991 ​ 919 Fair value of plan assets ​ 790 ​ 697 ​ 664 ​ 608 ​
Schedule of expected future contributions and benefit payments	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 2020 expected employer contributions ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ To plan trusts ​ $ 45 ​ $ 5 ​ $ 38 ​ $ — Expected benefit payments ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2020 ​ 59 ​ 5 ​ 78 ​ — 2021 ​ 62 ​ 5 ​ 77 ​ — 2022 ​ 65 ​ 5 ​ 81 ​ — 2023 ​ 69 ​ 5 ​ 85 ​ — 2024 ​ 98 ​ 5 ​ 84 ​ — 2025 - 2029 ​ 325 ​ 24 ​ 447 ​ — ​
Schedule of plan assets measured at fair value on a recurring basis	The following plan assets are measured at fair value on a recurring basis (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Amounts Using ​ ​ ​ ​ ​ Quoted prices in active ​ Significant other ​ Significant ​ ​ December 31, ​ Markets for identical ​ Observable inputs ​ Unobservable inputs Asset category ​ 2018 ​ assets (Level 1) ​ (Level 2) ​ (Level 3) U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ ​ Equities ​ $ 349 ​ $ 242 ​ $ 107 ​ $ — Fixed income ​ 283 ​ 212 ​ 71 ​ — Real estate/other ​ 65 ​ — ​ — ​ 65 Cash ​ — ​ — ​ — ​ — Total U.S. pension plan assets ​ $ 697 ​ $ 454 ​ $ 178 ​ $ 65 Non-U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Equities ​ $ 471 ​ $ 161 ​ $ 310 ​ $ — Fixed income ​ 747 ​ 496 ​ 251 ​ — Real estate/other ​ 497 ​ 93 ​ 348 ​ 56 Cash ​ 36 ​ 36 ​ — ​ — Total Non-U.S. pension plan assets ​ $ 1,751 ​ $ 786 ​ $ 909 ​ $ 56
Schedule of asset allocation for pension plans and the target allocation, by asset category	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Target ​ ​ ​ Allocation ​ Allocation at December 31, Asset category ​ 2020 ​ 2019 ​ 2018 U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ Equities 53 % 54 % 50 % Fixed income 39 % 38 % 41 % Real estate/other 5 % 8 % 9 % Cash ​ 3 % — % — Total U.S. pension plans 100 % 100 % 100 % Non-U.S. pension plans: ​ ​ ​ ​ ​ ​ ​ Equities 31 % 27 % 27 % Fixed income 44 % 43 % 43 % Real estate/other 15 % 26 % 28 % Cash 10 % 4 % 2 % Total non-U.S. pension plans 100 % 100 % 100 %
Real Estate/Other
EMPLOYEE BENEFIT PLANS
Schedule of reconciliation of the beginning and ending balances of plan assets measured at fair value using unobservable inputs (level 3)	The following table reconciles the beginning and ending balances of plan assets measured at fair value using unobservable inputs (Level 3) (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ Real Estate/Other ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3) ​ ​ ​ ​ Balance at beginning of period ​ $ 121 ​ $ 117 Return on pension plan assets ​ 4 ​ 4 Purchases, sales and settlements ​ (1) ​ — Transfers into (out of) Level 3 ​ — ​ — Balance at end of period ​ $ 124 ​ $ 121
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
EMPLOYEE BENEFIT PLANS
Schedule of amounts recognized in accumulated other comprehensive loss	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ Other Postretirement Benefit Plans ​ ​ 2019 ​ 2018 ​ 2019 ​ 2018 ​ ​ 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 ​ $ 395 ​ $ 846 ​ $ 402 ​ $ 793 ​ $ 20 ​ $ — ​ $ 21 ​ $ — Prior service credit ​ (11) ​ (31) ​ (13) ​ (27) ​ (33) ​ — ​ (38) ​ — Total ​ $ 384 ​ $ 815 ​ $ 389 ​ $ 766 ​ $ (13) ​ $ — ​ $ (17) ​ $ —
Schedule of amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement ​ ​ Defined Benefit Plans ​ Benefit Plans ​ ​ ​ ​ ​ Non-U.S. ​ ​ ​ ​ Non-U.S. ​ ​ U.S. Plans ​ Plans ​ U.S. Plans ​ Plans Actuarial loss $ 28 $ 56 $ 1 $ — Prior service credit ​ (2) ​ (5) ​ (5) ​ — Total ​ $ 26 ​ $ 51 ​ $ (4) ​ $ — ​
Components of the net periodic benefit costs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 20 $ 23 $ 22 $ 30 $ 32 $ 33 Interest cost ​ 41 ​ 39 ​ 39 ​ 37 ​ 37 ​ 35 Expected return on plan assets ​ (53) ​ (54) ​ (48) ​ (102) ​ (109) ​ (100) Amortization of prior service credit ​ (2) ​ (2) ​ (2) ​ (4) ​ (5) ​ (5) Amortization of actuarial loss ​ 23 ​ 31 ​ 27 ​ 48 ​ 41 ​ 48 Settlement loss ​ ​ — ​ ​ 2 ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Special termination benefits ​ — ​ — ​ — ​ — ​ — ​ 1 Net periodic benefit cost (credit) ​ $ 29 ​ $ 39 ​ $ 38 ​ $ 10 ​ $ (4) ​ $ 12 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Service cost $ 1 $ 2 $ 2 $ — $ — $ — Interest cost ​ 3 ​ 2 ​ 3 ​ — ​ — ​ — Amortization of prior service credit ​ (5) ​ (5) ​ (6) ​ — ​ — ​ — Amortization of actuarial loss ​ 1 ​ 2 ​ 3 ​ — ​ — ​ — Net periodic benefit cost ​ $ — ​ $ 1 ​ $ 2 ​ $ — ​ $ — ​ $ — ​
Schedule of amounts recognized in net periodic benefit cost and other comprehensive (loss) income	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Defined Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss $ 19 $ 18 $ 42 $ 101 $ 117 $ (42) Amortization of actuarial loss ​ (26) ​ (34) ​ (30) ​ (48) ​ (41) ​ (68) Current year prior service credit ​ — ​ — ​ — ​ (10) ​ 4 ​ (2) Amortization of prior service credit ​ 2 ​ 2 ​ 2 ​ 4 ​ 5 ​ 4 Settlements ​ ​ — ​ ​ (2) ​ ​ — ​ ​ 1 ​ ​ — ​ ​ — Curtailment (gain)/loss ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ 3 Total recognized in other comprehensive income (loss) ​ (5) ​ (16) ​ 14 ​ 48 ​ 85 ​ (105) Amounts related to discontinued operations ​ ​ 9 ​ ​ (4) ​ ​ — ​ ​ — ​ ​ — ​ ​ 42 Total recognized in other comprehensive income (loss) in continuing operations ​ ​ 4 ​ ​ (20) ​ ​ 14 ​ ​ 48 ​ ​ 85 ​ ​ (63) Net periodic benefit cost ​ 29 ​ 39 ​ 38 ​ 10 ​ (4) ​ 12 Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ 33 ​ $ 19 ​ $ 52 ​ $ 58 ​ $ 81 ​ $ (51) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Postretirement Benefit Plans ​ ​ U.S. plans ​ Non-U.S. plans ​ ​ 2019 ​ 2018 ​ 2017 ​ 2019 ​ 2018 ​ 2017 Current year actuarial loss (gain) $ — $ (10) $ (12) $ — $ — $ — Amortization of actuarial loss ​ (1) ​ (2) ​ (3) ​ — ​ — ​ (1) Current year prior service credit ​ — ​ — ​ — ​ — ​ — ​ — Amortization of prior service credit ​ 5 ​ 6 ​ 6 ​ — ​ — ​ 2 Total recognized in other comprehensive income (loss) ​ 4 ​ (6) ​ (9) ​ — ​ — ​ 1 Amounts related to discontinued operations ​ ​ (6) ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (1) Total recognized in other comprehensive income (loss) in continuing operations ​ ​ (2) ​ ​ (6) ​ ​ (9) ​ ​ — ​ ​ — ​ ​ — Net periodic benefit cost ​ — ​ 1 ​ 2 ​ — ​ — ​ — Total recognized in net periodic benefit cost and other comprehensive income (loss) ​ $ (2) ​ $ (5) ​ $ (7) ​ $ — ​ $ — ​ $ — ​

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax
Schedule of income tax expense (benefit)	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, ​ ​ 2019 ​ 2018 ​ 2017 Income tax (benefit) expense: ​ ​ ​ ​ ​ ​ U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ (17) ​ $ 57 ​ $ 23 Deferred ​ (181) ​ (30) ​ (133) Non-U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ 71 ​ 153 ​ 88 Deferred ​ 89 ​ (135) ​ 42 Total ​ $ (38) ​ $ 45 ​ $ 20
Schedule of reconciliation of the differences between the U.S. federal income taxes at the U.S. statutory rate to total provision for income taxes	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, ​ ​ 2019 ​ 2018 ​ 2017 Income from continuing operations before income taxes $ 391 $ 734 $ 531 Expected tax expense at U.S. statutory rate of 21%, 21% and 35%, respectively ​ $ 82 ​ $ 154 ​ $ 186 Change resulting from: ​ ​ ​ ​ ​ ​ ​ ​ ​ State tax expense net of federal benefit ​ (3) ​ (1) ​ (2) Non-U.S. tax rate differentials ​ 9 ​ 27 ​ (67) U.S. Tax Reform Act impact ​ ​ (1) ​ ​ 32 ​ ​ (52) Currency exchange gains/losses(net) ​ (5) ​ (10) ​ 15 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 ​ 16 ​ — Tax authority audits and dispute resolutions ​ (6) ​ 5 ​ 9 Share-based compensation excess tax benefits ​ (4) ​ (14) ​ (10) Change in valuation allowance ​ 56 ​ (185) ​ (72) Deferred tax effects of non-U.S. tax rate changes ​ 36 ​ (2) ​ 4 Impact of equity method investments ​ (13) ​ (14) ​ (3) Other non-U.S. tax effects, including nondeductible expenses transfer pricing adjustments and various withholding taxes ​ 19 ​ 19 ​ 3 Other U.S. tax effects, including nondeductible expenses and other credits ​ 2 ​ — ​ 9 Total income tax (benefit) expense ​ $ (38) ​ $ 45 ​ $ 20
Schedule of components of income (loss) from continuing operations before income taxes	The components of income (loss) from continuing operations before income taxes were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 U.S. $ (106) $ (38) $ (143) Non-U.S. ​ 497 ​ 772 ​ 674 Total ​ $ 391 ​ $ 734 ​ $ 531
Schedule of components of deferred income tax assets and liabilities	Components of deferred income tax assets and liabilities were as follows (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 Deferred income tax assets: ​ ​ ​ ​ Net operating loss carryforwards ​ $ 281 ​ $ 359 Pension and other employee compensation ​ 172 ​ 180 Property, plant and equipment ​ 15 ​ 15 Intangible assets ​ 56 ​ 76 Basis difference in Venator investment ​ ​ 199 ​ ​ — Operating leases ​ ​ 98 ​ ​ — Other, net ​ 72 ​ 50 Total ​ $ 893 ​ $ 680 Deferred income tax liabilities: ​ ​ ​ ​ ​ ​ Property, plant and equipment ​ $ (218) ​ $ (199) Pension and other employee compensation ​ (1) ​ — Intangible assets ​ ​ (27) ​ ​ (33) Unrealized currency gains ​ ​ (43) ​ ​ (37) Operating leases ​ ​ (102) ​ ​ — Other, net ​ (8) ​ (9) Total ​ $ (399) ​ $ (278) Net deferred tax asset before valuation allowance ​ $ 494 ​ $ 402 Valuation allowance—net operating losses and other ​ (231) ​ (215) Net deferred tax asset ​ $ 263 ​ $ 187 Non-current deferred tax asset ​ 292 ​ 324 Non-current deferred tax liability ​ (29) ​ (137) Net deferred tax asset ​ $ 263 ​ $ 187
Schedule of changes in valuation allowance	The following is a summary of changes in the valuation allowance (dollars in millions): Huntsman Corporation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 2017 Valuation allowance as of January 1 ​ $ 215 ​ $ 412 ​ $ 484 Valuation allowance as of December 31 ​ 231 ​ 215 ​ 412 Net (increase) decrease ​ (16) ​ 197 ​ 72 Foreign currency movements ​ — ​ 3 ​ 11 (Decrease) increase to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances ​ (40) ​ (15) ​ (11) Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72 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 ​ $ (133) ​ $ 53 ​ $ 50 Releases of valuation allowances in various jurisdictions ​ — ​ 132 ​ 22 Establishments of valuation allowances in various jurisdictions ​ 77 ​ — ​ — Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72
Schedule of reconciliation of unrecognized tax benefits	The following is a reconciliation of our unrecognized tax benefits (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 Unrecognized tax benefits as of January 1 ​ $ 26 ​ $ 23 Gross increases and decreases—tax positions taken during a prior period ​ 4 ​ 1 Gross increases and decreases—tax positions taken during the current period ​ 1 ​ 3 Decreases related to settlements of amounts due to tax authorities ​ — ​ — Reductions resulting from the lapse of statutes of limitation ​ (4) ​ — Foreign currency movements ​ 1 ​ (1) Unrecognized tax benefits as of December 31 ​ $ 28 ​ $ 26
Schedule of interest and penalties accrued related to unrecognized tax benefits included in the income tax expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Interest expense included in tax expense $ 2 $ — $ — Penalties expense included in tax expense ​ 2 ​ — ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 Accrued liability for interest $ 5 $ 3 Accrued liability for penalties ​ 2 ​ —
Summary of the tax years that remain subject to examination by major tax jurisdictions	​ ​ ​ Tax Jurisdiction Open Tax Years Belgium 2017 and later China 2009 and later Germany 2014 and later Hong Kong 2013 and later India 2004 and later Italy 2015 and later Mexico 2014 and later Switzerland 2013 and later The Netherlands 2016 and later Thailand ​ 2012 and later United Kingdom 2017 and later United States federal 2017 and later
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Income Tax
Schedule of income tax expense (benefit)	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Income tax (benefit) expense: ​ ​ ​ U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ $ (21) ​ $ 57 ​ $ 16 Deferred ​ (179) ​ (34) ​ (130) Non-U.S. ​ ​ ​ ​ ​ ​ ​ ​ ​ Current ​ 70 ​ 153 ​ 88 Deferred ​ 89 ​ (135) ​ 43 Total ​ $ (41) ​ $ 41 ​ $ 17
Schedule of reconciliation of the differences between the U.S. federal income taxes at the U.S. statutory rate to total provision for income taxes	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Income from continuing operations before income taxes $ 377 $ 716 $ 524 Expected tax expense at U.S. statutory rate of 21%, 21% and 35%, respectively ​ $ 79 ​ $ 150 ​ $ 183 Change resulting from: ​ ​ ​ ​ ​ ​ ​ ​ ​ State tax expense net of federal benefit ​ (3) ​ (1) ​ (2) Non-U.S. tax rate differentials ​ 9 ​ 27 ​ (67) U.S. Tax Reform Act impact ​ ​ (1) ​ ​ 32 ​ ​ (53) Currency exchange gains/losses(net) ​ (5) ​ (10) ​ 15 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 ​ 16 ​ — Tax authority audits and dispute resolutions ​ (6) ​ 5 ​ 9 Share-based compensation excess tax benefits ​ (4) ​ (14) ​ (10) Change in valuation allowance ​ 56 ​ (185) ​ (72) Deferred tax effects of non-U.S. tax rate changes ​ 36 ​ (2) ​ 4 Impact of equity method investments ​ (13) ​ (14) ​ (3) Other non-U.S. tax effects, including nondeductible expenses transfer pricing adjustments and various withholding taxes ​ 19 ​ 19 ​ 4 Other U.S. tax effects, including nondeductible expenses and other credits ​ 2 ​ — ​ 9 Total income tax (benefit) expense ​ $ (41) ​ $ 41 ​ $ 17
Schedule of components of income (loss) from continuing operations before income taxes	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 U.S. $ (120) $ (56) $ (150) Non-U.S. ​ 497 ​ 772 ​ 674 Total ​ $ 377 ​ $ 716 ​ $ 524
Schedule of components of deferred income tax assets and liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ ​ 2019 ​ 2018 Deferred income tax assets: ​ ​ ​ ​ Net operating loss carryforwards ​ $ 281 ​ $ 359 Pension and other employee compensation ​ 172 ​ 180 Property, plant and equipment ​ 15 ​ 15 Intangible assets ​ 56 ​ 76 Basis difference in Venator investment ​ ​ 199 ​ ​ — Operating leases ​ ​ 98 ​ ​ — Other, net ​ 72 ​ 50 Total ​ $ 893 ​ $ 680 Deferred income tax liabilities: ​ ​ ​ ​ ​ ​ Property, plant and equipment ​ $ (218) ​ $ (199) Pension and other employee compensation ​ (1) ​ — Intangible assets ​ ​ (27) ​ ​ (33) Unrealized currency gains ​ ​ (43) ​ ​ (37) Operating leases ​ ​ (102) ​ ​ — Other, net ​ (8) ​ (7) Total ​ $ (399) ​ $ (276) Net deferred tax asset before valuation allowance ​ $ 494 ​ $ 404 Valuation allowance—net operating losses and other ​ (231) ​ (215) Net deferred tax asset ​ $ 263 ​ $ 189 Non-current deferred tax asset ​ 292 ​ 324 Non-current deferred tax liability ​ (29) ​ (135) Net deferred tax asset ​ $ 263 ​ $ 189
Schedule of changes in valuation allowance	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 2018 2017 Valuation allowance as of January 1 ​ $ 215 ​ $ 412 ​ $ 487 Valuation allowance as of December 31 ​ 231 ​ 215 ​ 412 Net (increase) decrease ​ (16) ​ 197 ​ 75 Foreign currency movements ​ — ​ 3 ​ 11 (Decrease) increase to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances ​ (40) ​ (15) ​ (14) Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72 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 ​ $ (133) ​ $ 53 ​ $ 49 Releases of valuation allowances in various jurisdictions ​ — ​ 132 ​ 23 Establishments of valuation allowances in various jurisdictions ​ 77 ​ — ​ — Change in valuation allowance per rate reconciliation ​ $ (56) ​ $ 185 ​ $ 72

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2019
COMMITMENTS AND CONTINGENCIES
Schedule of total purchase commitments	Total purchase commitments as of December 31, 2019 are as follows (dollars in millions): ​ ​ ​ ​ Year ending December 31, ​ ​ 2020 ​ $ 1,364 2021 ​ 905 2022 ​ 751 2023 ​ 424 2024 ​ 416 Thereafter ​ 1,894 ​ ​ $ 5,754

HUNTSMAN CORPORATION STOCKHOL_2

HUNTSMAN CORPORATION STOCKHOLDERS' EQUITY (Tables)	12 Months Ended
	Dec. 31, 2019
HUNTSMAN CORPORATION STOCKHOLDERS' EQUITY
Schedule of dividends on common stock	The following tables represent dividends on common stock for our Company for the years ended December 31, 2019 and 2018 (dollars in millions, except per share payment amounts): ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2018 ​ ​ ​ ​ ​ Approximate ​ ​ Per share ​ amount Quarter ended ​ payment amount ​ paid March 31, 2018 $ 0.1625 $ 39 June 30, 2018 ​ 0.1625 ​ 39 September 30, 2018 ​ 0.1625 ​ 39 December 31, 2018 ​ 0.1625 ​ 39

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	12 Months Ended
	Dec. 31, 2019
STOCK-BASED COMPENSATION PLANS
Schedule of compensation cost under the 2016 Stock Incentive Plan and the Prior Plan	The compensation cost under the 2016 Stock Incentive Plan and the Prior Plan for our Company and Huntsman International were as follows (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Huntsman Corporation compensation cost $ 29 ​ $ 27 ​ $ 36 Huntsman International compensation cost ​ 28 ​ ​ 26 ​ ​ 35
Schedule of assumptions used to calculate fair value of each stock option award estimated on the date of grant using the Black-Scholes valuation model	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 ​ 2018 ​ 2019 Dividend yield 2.9 % ​ 1.6 % ​ 2.4 % Expected volatility 54.0 % ​ 55.2 % ​ 56.9 % Risk-free interest rate 2.5 % ​ 2.6 % ​ 2.0 % Expected life of stock options granted during the period 5.9 years ​ 5.9 years ​ 5.9 years
Summary of stock option activity under the 2016 Stock Incentive Plan and the Prior Plan	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Average ​ ​ ​ ​ ​ ​ ​ ​ Average ​ Remaining ​ Aggregate ​ ​ ​ ​ ​ Exercise ​ Contractual ​ Intrinsic Option Awards Shares Price Term Value ​ ​ (in thousands) ​ ​ ​ ​ (years) ​ (in millions) Outstanding at January 1, 2019 ​ 4,545 ​ $ 17.81 ​ ​ ​ ​ ​ ​ Granted ​ ​ 896 ​ ​ 22.66 ​ ​ ​ ​ ​ ​ Exercised ​ ​ (366) ​ ​ 11.19 ​ ​ ​ ​ ​ ​ Forfeited ​ ​ (50) ​ ​ 25.59 ​ ​ ​ ​ ​ ​ Outstanding at December 31, 2019 ​ ​ 5,025 ​ ​ 19.08 ​ ​ 6.2 ​ $ 30 Exercisable at December 31, 2019 ​ ​ 3,600 ​ ​ 16.90 ​ ​ 5.3 ​ ​ 27
Summary of status of nonvested shares	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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, 2019 ​ ​ 1,923 ​ $ 19.08 ​ ​ 504 ​ $ 20.66 Granted ​ ​ 709 ​ ​ 24.60 ​ ​ 256 ​ ​ 22.64 Vested ​ ​ (974) (1)(2) ​ 13.65 ​ ​ (313) ​ ​ 16.32 Forfeited ​ ​ (18) ​ ​ 26.29 ​ ​ (20) ​ ​ 25.33 Nonvested at December 31, 2019 ​ ​ 1,640 ​ ​ 24.61 ​ ​ 427 ​ ​ 24.80 (1) As of December 31, 2019, a total of 389,095 restricted stock units were vested but not yet issued, of which 30,486 vested during 2019. 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. (2) A total of 412,246 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, 2018. During the year ended December 31, 2019, an additional 357,006 performance share unit awards with a grant date fair value of $10.22 vested above the target in accordance the performance criteria of these awards.

OTHER COMPREHENSIVE (LOSS) IN_2

OTHER COMPREHENSIVE (LOSS) INCOME (Tables)	12 Months Ended
	Dec. 31, 2019
OTHER COMPREHENSIVE LOSS
Schedule of other comprehensive loss	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, 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 and January 1, 2019, respectively. (b) Amounts are net of tax of $148 and $135 as of December 31, 2019 and January 1, 2019, respectively. (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, 2018 ​ $ (249) ​ $ (1,189) ​ $ 3 ​ $ 24 ​ $ (1,411) ​ $ 143 ​ $ (1,268) Cumulative effect of changes in fair value of equity investments ​ ​ — ​ ​ — ​ ​ — ​ ​ (10) ​ ​ (10) ​ ​ — ​ ​ (10) Revised beginning balance, January 1, 2018 ​ ​ (249) ​ ​ (1,189) ​ ​ 3 ​ ​ 14 ​ ​ (1,421) ​ ​ 143 ​ ​ (1,278) Other comprehensive (loss) income before reclassifications, gross ​ ​ (186) ​ ​ (130) ​ ​ — ​ ​ — ​ ​ (316) ​ ​ 47 ​ ​ (269) Tax expense (benefit) ​ ​ (6) ​ ​ 27 ​ ​ — ​ ​ (3) ​ ​ 18 ​ ​ — ​ ​ 18 Amounts reclassified from accumulated other comprehensive loss, gross(c) ​ ​ — ​ ​ 77 ​ ​ — ​ ​ — ​ ​ 77 ​ ​ — ​ ​ 77 Tax expense ​ ​ — ​ ​ (13) ​ ​ — ​ ​ (6) ​ ​ (19) ​ ​ — ​ ​ (19) Net current-period other comprehensive (loss) income ​ ​ (192) ​ ​ (39) ​ ​ — ​ ​ (9) ​ ​ (240) ​ ​ 47 ​ ​ (193) Disposition of a portion of Venator ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (5) ​ ​ (5) Deconsolidation of Venator ​ ​ 70 ​ ​ 285 ​ ​ 5 ​ ​ — ​ ​ 360 ​ ​ (149) ​ ​ 211 Tax expense ​ ​ — ​ ​ (51) ​ ​ — ​ ​ — ​ ​ (51) ​ ​ — ​ ​ (51) Ending balance, December 31, 2018 ​ $ (371) ​ $ (994) ​ $ 8 ​ $ 5 ​ $ (1,352) ​ $ 36 ​ $ (1,316) (a) Amounts are net of tax of $71 and $65 as of December 31, 2018 and January 1, 2018, respectively. (b) Amounts are net of tax of $135 and $172 as of December 31, 2018 and January 1, 2018, respectively. (c) See table below for details about these reclassifications.
Schedule of details about reclassifications from other comprehensive loss	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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): 2019 ​ 2018 ​ 2017 is presented Amortization of pension and other postretirement benefits: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Prior service credit ​ $ (11) ​ $ (12) ​ $ (15) ​ (b) Settlement loss ​ ​ 1 ​ ​ 2 ​ ​ — ​ ​ Actuarial loss ​ ​ 72 ​ ​ 87 ​ ​ 95 ​ (b)(c) ​ ​ ​ 62 ​ ​ 77 ​ ​ 80 ​ Total before tax ​ ​ ​ (12) ​ ​ (13) ​ ​ (14) ​ Income tax expense Total reclassifications for the period ​ $ 50 ​ $ 64 ​ $ 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. Employee Benefit Plans.” (c) Amounts contain approximately $7, $22 and $22 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2019, 2018 and 2017, respectively.
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
OTHER COMPREHENSIVE LOSS
Schedule of other comprehensive loss	Huntsman International ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Pension Other Other, net Total Amounts Amounts 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 and January 1, 2019, respectively. (b) Amounts are net of tax of $174 and $161 as of December 31, 2019 and January 1, 2019, respectively. (c) See table below for details about these reclassifications. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Pension Other Other, net Total Amounts Amounts Beginning balance, January 1, 2018 $ (252) $ (1,174) $ 3 $ 17 $ (1,406) $ 143 $ (1,263) Cumulative effect of changes in fair value of equity investments ​ ​ — ​ ​ — ​ ​ — ​ ​ (10) ​ ​ (10) ​ ​ — ​ ​ (10) Revised beginning balance, January 1, 2018 ​ ​ (252) ​ ​ (1,174) ​ ​ 3 ​ ​ 7 ​ ​ (1,416) ​ ​ 143 ​ ​ (1,273) Other comprehensive (loss) income before reclassifications, gross ​ ​ (188) ​ ​ (130) ​ ​ — ​ ​ — ​ ​ (318) ​ ​ 47 ​ ​ (271) Tax expense (benefit) ​ ​ (6) ​ ​ 27 ​ ​ — ​ ​ (1) ​ ​ 20 ​ ​ — ​ ​ 20 Amounts reclassified from accumulated other comprehensive loss, gross(c) ​ ​ — ​ ​ 80 ​ ​ — ​ ​ — ​ ​ 80 ​ ​ — ​ ​ 80 Tax expense ​ ​ — ​ ​ (14) ​ ​ — ​ ​ (5) ​ ​ (19) ​ ​ — ​ ​ (19) Net current-period other comprehensive (loss) income ​ ​ (194) ​ ​ (37) ​ ​ — ​ ​ (6) ​ ​ (237) ​ ​ 47 ​ ​ (190) Disposition of a portion of Venator ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ (5) ​ ​ (5) Deconsolidation of Venator ​ ​ 70 ​ ​ 285 ​ ​ 5 ​ ​ — ​ ​ 360 ​ ​ (149) ​ ​ 211 Tax expense ​ ​ — ​ ​ (51) ​ ​ — ​ ​ — ​ ​ (51) ​ ​ — ​ ​ (51) Ending balance, December 31, 2018 ​ $ (376) ​ $ (977) ​ $ 8 ​ $ 1 ​ $ (1,344) ​ $ 36 ​ $ (1,308) (a) Amounts are net of tax of $57 and $51 as of December 31, 2018 and January 1, 2018, respectively. (b) Amounts are net of tax of $161 and $199 as of December 31, 2018 and January 1, 2018, respectively. (c) See table below for details about these reclassifications.
Schedule of details about reclassifications from other comprehensive loss	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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): 2019 ​ 2018 ​ 2017 is presented Amortization of pension and other postretirement benefits: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Prior service credit ​ $ (11) ​ $ (12) ​ $ (15) ​ (b) Settlement loss ​ ​ 1 ​ ​ 2 ​ ​ — ​ ​ Actuarial loss ​ ​ 75 ​ ​ 90 ​ ​ 101 ​ (b)(c) ​ ​ ​ 65 ​ ​ 80 ​ ​ 86 ​ Total before tax ​ ​ ​ (12) ​ ​ (14) ​ ​ (15) ​ Income tax expense Total reclassifications for the period ​ $ 53 ​ $ 66 ​ $ 71 ​ 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. Employee Benefit Plans.” (c) Amounts contain approximately $7 and $22 and $29 of prior service credit and actuarial loss related to discontinued operations for the years ended December 31, 2019, 2018 and 2017, respectively.

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2019
RELATED PARTY TRANSACTIONS
Schedule of transactions with affiliates	Our consolidated financial statements include the following transactions with our affiliates not otherwise disclosed (dollars in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ ​ 2019 ​ 2018 ​ 2017 Sales to: ​ ​ ​ ​ ​ ​ Unconsolidated affiliates ​ $ 133 ​ $ 153 ​ $ 161 Inventory purchases from: ​ ​ ​ ​ ​ ​ ​ ​ ​ Unconsolidated affiliates ​ 434 ​ 411 ​ 291

OPERATING SEGMENT INFORMATION (

OPERATING SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2019
OPERATING SEGMENT INFORMATION
Schedule of major products by reportable operating segment	​ ​ ​ ​ Segment Products Polyurethanes ​ MDI, polyols, TPU and aniline 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, dyes and digital inks
Schedule of EBITDA, Assets, Goodwill and Depreciation for each of the entity's reportable operating segments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Revenues: ​ ​ ​ ​ ​ ​ ​ Polyurethanes $ 3,911 ​ $ 4,282 ​ $ 3,764 Performance Products ​ 1,158 ​ ​ 1,301 ​ ​ 1,156 Advanced Materials ​ 1,044 ​ ​ 1,116 ​ ​ 1,040 Textile Effects ​ 763 ​ ​ 824 ​ ​ 776 Corporate and eliminations ​ (79) ​ ​ 81 ​ ​ 109 Total $ 6,797 ​ $ 7,604 ​ $ 6,845 ​ ​ ​ ​ ​ ​ ​ ​ ​ Huntsman Corporation: ​ ​ ​ ​ ​ ​ ​ ​ Segment adjusted EBITDA(1): ​ ​ ​ ​ ​ ​ ​ ​ Polyurethanes $ 548 ​ $ 809 ​ $ 776 Performance Products ​ 168 ​ ​ 197 ​ ​ 155 Advanced Materials ​ 201 ​ ​ 225 ​ ​ 219 Textile Effects ​ 84 ​ ​ 101 ​ ​ 83 Corporate and other(2) ​ (155) ​ ​ (171) ​ ​ (193) Total ​ 846 ​ ​ 1,161 ​ ​ 1,040 Reconciliation of adjusted EBITDA to net income: ​ ​ ​ ​ ​ ​ ​ ​ Interest expense—continuing operations ​ (111) ​ ​ (115) ​ ​ (165) Interest expense—discontinued operations ​ — ​ ​ (36) ​ ​ (19) Income tax benefit (expense)—continuing operations ​ 38 ​ ​ (45) ​ ​ (20) Income tax expense—discontinued operations ​ (35) ​ ​ (86) ​ ​ (111) Depreciation and amortization—continuing operations ​ (270) ​ ​ (255) ​ ​ (236) Depreciation and amortization—discontinued operations ​ (61) ​ ​ (88) ​ ​ (151) Net income attributable to noncontrolling interests ​ 36 ​ ​ 313 ​ ​ 105 Other adjustments: ​ ​ ​ ​ ​ ​ ​ ​ Business acquisition and integration expenses and purchase accounting inventory adjustments ​ (5) ​ ​ (9) ​ ​ (19) Merger costs ​ — ​ ​ (2) ​ ​ (28) EBITDA from discontinued operations ​ 265 ​ ​ 171 ​ ​ 511 Noncontrolling interest of discontinued operations ​ — ​ ​ (232) ​ ​ (49) Fair value adjustments to Venator investment ​ (18) ​ ​ (62) ​ ​ — Loss on early extinguishment of debt ​ (23) ​ ​ (3) ​ ​ (54) Certain legal settlements and related (expenses) income ​ (6) ​ ​ (1) ​ ​ 11 (Loss) gain on sale of businesses/assets ​ (21) ​ ​ — ​ ​ 9 Certain nonrecurring information technology project implementation costs ​ (4) ​ ​ — ​ ​ — Amortization of pension and postretirement actuarial losses ​ (66) ​ ​ (67) ​ ​ (69) Plant incident remediation costs ​ (8) ​ ​ — ​ ​ (1) U.S. Tax Reform Act impact on noncontrolling interest ​ — ​ ​ — ​ ​ 6 Restructuring, impairment and plant closing and transition credits (costs) ​ 41 ​ ​ 6 ​ ​ (19) Net income $ 598 ​ $ 650 ​ $ 741 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Depreciation and Amortization: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 120 ​ $ 108 ​ $ 92 Performance Products ​ 81 ​ 78 ​ 78 Advanced Materials ​ 36 ​ 37 ​ 33 Textile Effects ​ 16 ​ 16 ​ 14 Corporate and other ​ 17 ​ 16 ​ 19 Total ​ $ 270 ​ $ 255 ​ $ 236 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Capital Expenditures: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 185 ​ $ 153 ​ $ 158 Performance Products ​ 32 ​ 48 ​ 35 Advanced Materials ​ 24 ​ 20 ​ 21 Textile Effects ​ 22 ​ 20 ​ 16 Corporate and other ​ 11 ​ 10 ​ 4 Total ​ $ 274 ​ $ 251 ​ $ 234 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Total Assets: ​ ​ ​ ​ Polyurethanes ​ $ 3,437 ​ $ 3,129 Performance Products ​ 1,125 ​ 1,161 Advanced Materials ​ 774 ​ 796 Textile Effects ​ 511 ​ 571 Corporate and other ​ 1,265 ​ 1,187 Total ​ $ 7,112 ​ $ 6,844
Schedule of revenues and long-lived assets by geographical area	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Revenues by geographic area(1): ​ ​ ​ ​ ​ ​ ​ ​ ​ United States ​ $ 2,025 ​ $ 2,136 ​ $ 1,828 China ​ 1,076 ​ 1,260 ​ 1,122 Germany ​ 541 ​ 537 ​ 507 India ​ 319 ​ 352 ​ 336 Other nations ​ 2,836 ​ 3,319 ​ 3,052 Total ​ $ 6,797 ​ $ 7,604 ​ $ 6,845 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Long-lived assets(2): ​ ​ ​ ​ United States ​ $ 970 ​ $ 944 The Netherlands ​ 334 ​ 331 China ​ 247 ​ 247 Saudi Arabia ​ 154 ​ 161 Germany ​ 137 ​ 143 Switzerland ​ ​ 106 ​ ​ 108 Singapore ​ 94 ​ 96 Other nations ​ 341 ​ 323 Total ​ $ 2,383 ​ $ 2,353 ​ (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.
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
OPERATING SEGMENT INFORMATION
Schedule of EBITDA, Assets, Goodwill and Depreciation for each of the entity's reportable operating segments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Huntsman International: ​ ​ ​ ​ ​ ​ ​ Segment adjusted EBITDA(1): ​ ​ ​ ​ ​ ​ ​ ​ Polyurethanes $ 548 ​ $ 809 ​ $ 776 Performance Products ​ 168 ​ ​ 197 ​ ​ 155 Advanced Materials ​ 201 ​ ​ 225 ​ ​ 219 Textile Effects ​ 84 ​ ​ 101 ​ ​ 83 Corporate and other(2) ​ (150) ​ ​ (167) ​ ​ (189) Total ​ 851 ​ ​ 1,165 ​ ​ 1,044 Reconciliation of adjusted EBITDA to net income: ​ ​ ​ ​ ​ ​ ​ ​ Interest expense—continuing operations ​ (126) ​ ​ (136) ​ ​ (181) Interest expense—discontinued operations ​ — ​ ​ (36) ​ ​ (19) Income tax benefit (expense)—continuing operations ​ 41 ​ ​ (41) ​ ​ (17) Income tax expense—discontinued operations ​ (35) ​ ​ (86) ​ ​ (111) Depreciation and amortization—continuing operations ​ (270) ​ ​ (252) ​ ​ (228) Depreciation and amortization—discontinued operations ​ (61) ​ ​ (88) ​ ​ (151) Net income attributable to noncontrolling interests ​ 36 ​ ​ 313 ​ ​ 105 Other adjustments: ​ ​ ​ ​ ​ ​ ​ ​ Business acquisition and integration expenses and purchase accounting inventory adjustments ​ (5) ​ ​ (9) ​ ​ (23) Merger costs ​ — ​ ​ (2) ​ ​ (28) EBITDA from discontinued operations ​ 265 ​ ​ 171 ​ ​ 511 Noncontrolling interest of discontinued operations ​ — ​ ​ (232) ​ ​ (49) Fair value adjustments to Venator investment ​ (18) ​ ​ (62) ​ ​ — Loss on early extinguishment of debt ​ (23) ​ ​ (3) ​ ​ (54) Certain legal settlements and related (expenses) income ​ (6) ​ ​ (1) ​ ​ 11 (Loss) gain on sale of businesses/assets ​ (21) ​ ​ — ​ ​ 10 Certain nonrecurring information technology project implementation costs ​ (4) ​ ​ — ​ ​ — Amortization of pension and postretirement actuarial losses ​ (70) ​ ​ (71) ​ ​ (72) Plant incident remediation costs ​ (8) ​ ​ — ​ ​ (1) U.S. Tax Reform Act impact on noncontrolling interest ​ — ​ ​ — ​ ​ 6 Restructuring, impairment and plant closing and transition credits (costs) ​ 41 ​ ​ 6 ​ ​ (19) Net income $ 587 ​ $ 636 ​ $ 734 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Depreciation and Amortization: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 120 ​ $ 108 ​ $ 92 Performance Products ​ 81 ​ 78 ​ 78 Advanced Materials ​ 36 ​ 37 ​ 33 Textile Effects ​ 16 ​ 16 ​ 14 Corporate and other ​ 17 ​ 13 ​ 11 Total ​ $ 270 ​ $ 252 ​ $ 228 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended December 31, ​ 2019 2018 2017 Capital Expenditures: ​ ​ ​ ​ ​ ​ Polyurethanes ​ $ 185 ​ $ 153 ​ $ 158 Performance Products ​ 32 ​ 48 ​ 35 Advanced Materials ​ 24 ​ 20 ​ 21 Textile Effects ​ 22 ​ 20 ​ 16 Corporate and other ​ 11 ​ 10 ​ 4 Total ​ $ 274 ​ $ 251 ​ $ 234 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Total Assets: ​ ​ ​ ​ Polyurethanes ​ $ 3,437 ​ $ 3,129 Performance Products ​ 1,125 ​ 1,161 Advanced Materials ​ 774 ​ 796 Textile Effects ​ 511 ​ 571 Corporate and other ​ 1,668 ​ 1,569 Total ​ $ 7,515 ​ $ 7,226 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2019 2018 Goodwill: ​ ​ ​ ​ Polyurethanes ​ $ 177 ​ $ 173 Performance Products ​ 16 ​ 16 Advanced Materials ​ 83 ​ 86 Total ​ $ 276 ​ $ 275 ​ (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 management 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; (f) loss on early extinguishment of debt; (g) certain legal settlements and related income (expenses); (h) gain on sale of businesses/assets; (i) certain nonrecurring information technology project implementation costs; (j) amortization of pension and postretirement actuarial losses; (k) plant incident remediation costs; (l) U.S. Tax Reform Act impact on noncontrolling interest; and (m) restructuring, impairment, plant closing and transition credits (costs). (2) Corporate and other includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, nonoperating income and expense, benzene sales and gains and losses on the disposition of corporate assets.

SELECTED UNAUDITED QUARTERLY _2

SELECTED UNAUDITED QUARTERLY FINANCIAL DATA (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information
Summary of selected unaudited quarterly financial data	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2019 2019 2019 2019 Revenues ​ $ 1,669 ​ $ 1,784 ​ $ 1,687 ​ $ 1,657 Gross profit ​ 359 ​ 373 ​ 340 ​ 310 Restructuring, impairment and plant closing costs (credits) ​ 1 ​ — ​ (43) ​ 1 Income (loss) from continuing operations ​ 108 ​ 83 ​ (27) ​ 265 Net income ​ 131 ​ 118 ​ 41 ​ 308 Net income attributable to noncontrolling interests ​ ​ 12 ​ ​ 8 ​ ​ 11 ​ ​ 5 Net income attributable to Huntsman Corporation ​ 119 ​ 110 ​ 30 ​ 303 Basic income per share(4): ​ ​ ​ ​ ​ Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.41 ​ 0.33 ​ (0.17) ​ 1.16 Net income attributable to Huntsman Corporation common stockholders ​ 0.51 ​ 0.48 ​ 0.13 ​ 1.35 Diluted income per share(4): ​ ​ ​ ​ Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.41 ​ 0.32 ​ (0.17) ​ 1.15 Net income attributable to Huntsman Corporation common stockholders ​ 0.51 ​ 0.47 ​ 0.13 ​ 1.34 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2018 2018 2018(1) 2018(2) Revenues ​ $ 1,838 ​ $ 1,977 ​ $ 1,968 ​ $ 1,821 Gross profit ​ 466 ​ 479 ​ 467 ​ 352 Restructuring, impairment and plant closing costs (credits) ​ 2 ​ 1 ​ 5 ​ (15) Income from continuing operations ​ 189 ​ 242 ​ 197 ​ 61 Net income (loss) ​ 350 ​ 623 ​ (8) ​ (315) Net income attributable to noncontrolling interests(3) ​ ​ 76 ​ ​ 209 ​ ​ 3 ​ ​ 25 Net income (loss) attributable to Huntsman Corporation ​ 274 ​ 414 ​ (11) ​ (340) Basic income per share(4): ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.70 ​ 0.93 ​ 0.72 ​ 0.20 Net income (loss) attributable to Huntsman Corporation common stockholders ​ 1.14 ​ 1.73 ​ (0.05) ​ (1.45) Diluted income per share(4): ​ ​ ​ ​ Income from continuing operations attributable to Huntsman Corporation common stockholders ​ 0.68 ​ 0.91 ​ 0.72 ​ 0.19 Net income (loss) attributable to Huntsman Corporation common stockholders ​ 1.11 ​ 1.71 ​ (0.05) ​ (1.43)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Quarterly Financial Information
Summary of selected unaudited quarterly financial data	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2019 2019 2019 2019 Revenues ​ $ 1,669 ​ $ 1,784 ​ $ 1,687 ​ $ 1,657 Gross profit ​ 359 ​ 373 ​ 340 ​ 310 Restructuring, impairment and plant closing costs (credits) ​ 1 ​ — ​ (43) ​ 1 Income (loss) from continuing operations ​ 105 ​ 80 ​ (30) ​ 268 Net income ​ 128 ​ 115 ​ 38 ​ 311 Net income attributable to noncontrolling interests ​ ​ 12 ​ ​ 8 ​ ​ 11 ​ ​ 5 Net income attributable to Huntsman International ​ 116 ​ 107 ​ 27 ​ 306 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended ​ ​ March 31, ​ June 30, ​ September 30, ​ December 31, ​ 2018 2018 2018(1) 2018(2) Revenues ​ $ 1,838 ​ $ 1,977 ​ ​ 1,968 ​ $ 1,821 Gross profit ​ 467 ​ 480 ​ ​ 468 ​ 352 Restructuring, impairment and plant closing costs (credits) ​ 2 ​ 1 ​ ​ 5 ​ (15) Income from continuing operations ​ 186 ​ 239 ​ ​ 194 ​ 56 Net income (loss) ​ 347 ​ 620 ​ ​ (11) ​ (320) Net income attributable to noncontrolling interests(3) ​ ​ 76 ​ ​ 209 ​ ​ 3 ​ ​ 25 Net income (loss) attributable to Huntsman International ​ 271 ​ 411 ​ ​ (14) ​ (345) (1) During the third quarter of 2018, we recognized a net after tax valuation allowance of $270 million to adjust the carrying amount of the assets and liabilities held for sale and the amount of accumulated comprehensive income recorded in equity related to Venator to the lower of cost or estimated fair value, less cost to sell. This loss was recorded in discontinued operations on our consolidated statements of operations. For more information see “Note 4. Discontinued Operations and Dispositions – Separation and Deconsolidation of Venator.” ​ (2) In connection with the deconsolidation of Venator, we recorded a pretax loss of $427 million during the fourth quarter of 2018 to record our remaining ownership interest in Venator at fair value. This loss was recorded in discontinued operations on our consolidated statements of operations. We elected the fair value option to account for our equity method investment in Venator post deconsolidation. Accordingly, at December 31, 2018, we recorded a pretax loss of $57 million to record our equity method investment in Venator at fair value. This loss was recorded in “Fair value adjustments to Venator investment” on our consolidated statements of operations. Furthermore, in connection with the December 3, 2018 sale of Venator shares to Bank of America N.A., we recorded a forward swap. During December 2018, we recorded a loss of $5 million in “Fair value adjustments to Venator investment” on our consolidated statements of operations to record the forward swap at fair value. For more information, see “Note 4. Discontinued Operations and Dispositions – Separation and Deconsolidation of Venator.” ​ (3) In connection with the Venator IPO in August 2017, we separated the P&A Business and, beginning in the third quarter of 2017, we reported the results of operations of Venator as discontinued operations on our consolidated financial statements. On December 3, 2018, we further reduced our investment in Venator by the sale of Venator ordinary shares which allowed us to deconsolidate Venator beginning in December 2018. See “Note 4. Discontinued Operations and Business Dispositions—Separation of Venator.” (4) Basic and diluted income per share are computed independently for each of the quarters presented based on the weighted average number of common shares outstanding during that period. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.

GENERAL - DESCRIPTION (Details)

GENERAL - DESCRIPTION (Details)	12 Months Ended
	Dec. 31, 2019segmentcompany
GENERAL
Number of Chinese chemical companies | company	3
Number of operating segments | segment	4

GENERAL - ACQUISITION AND SALE

GENERAL - ACQUISITION AND SALE (Details) lb in Millions, $ in Millions	Jan. 03, 2020USD ($)	Dec. 05, 2019USD ($)facility	Sep. 30, 2019USD ($)lb
Discontinued Operations, Disposed of by Sale | Chemical Intermediates Businesses
GENERAL
Purchase price of disposition	$ 2,000
Proceeds from Divestiture of Businesses	1,930
Underfunded pension and other post-employment benefit liabilities	72
Net after tax cash proceeds expected to be received	$ 1,600
Sasol Huntsman GmbH and Co. KG
GENERAL
Percentage of joint interest acquired			50.00%
Capacity to produce of maleic anhydride | lb			230
Payment to acquire adjusted for debt and other terms			$ 101
Icynene-Lapolla
GENERAL
Number of operating manufacturing facilities in a acquisition agreement | facility		2
Business Combination Consideration To Be Transferred		$ 350

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - DERIVATIVES AND HEDGING ACTIVITIES (Details)	12 Months Ended
	Dec. 31, 2019
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Quarterly period of effectiveness assessments	3 months
Minimum
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Derivative designated as a cash flow hedge, effectiveness percentage (as a percent)	80.00%
Maximum
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Derivative designated as a cash flow hedge, effectiveness percentage (as a percent)	125.00%

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - FOREIGN CURRENCY TRANSLATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
FOREIGN CURRENCY TRANSLATION
Cumulative inflation rate used to determine if economic environment is highly inflationary (as a percent)	100.00%
Period used to determine if economic environment is highly inflationary	3 years
Foreign currency transaction (losses) gains	$ (8)	$ 3	$ 5

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - INCOME TAXES (Details) - USD ($) $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
U.S. Tax Reform Act
U.S. income tax statutory rate (as a percent)	21.00%	21.00%	35.00%
Net tax benefits due to enactment of U.S. Tax Reform Act				$ 20
Net tax benefits from due to remeasurement of deferred tax assets and liabilities				135
Income tax benefit from remeasurement of deferred assets and liabilities			$ 137
Final tax expense from remeasurement of deferred assets and liabilities		$ 2
Net tax expenses due to transition tax on deemed repatriation of deferred foreign income				$ 115
Provisional tax expense due to transition tax on deemed repatriation of deferred foreign income			$ 85
U.S. Tax Reform Act - Provisional measurement period adjustment		$ 30

SUMMARY OF SIGNIFICANT ACCOUN_7

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - FINITE-LIVED INTANGIBLES (Details)	12 Months Ended
	Dec. 31, 2019
Patents and technology | Minimum
INTANGIBLE ASSETS
Estimated useful life	5 years
Patents and technology | Maximum
INTANGIBLE ASSETS
Estimated useful life	30 years
Trademarks | Minimum
INTANGIBLE ASSETS
Estimated useful life	9 years
Trademarks | Maximum
INTANGIBLE ASSETS
Estimated useful life	30 years
Licenses and other agreements | Minimum
INTANGIBLE ASSETS
Estimated useful life	5 years
Licenses and other agreements | Maximum
INTANGIBLE ASSETS
Estimated useful life	15 years
Other intangibles | Minimum
INTANGIBLE ASSETS
Estimated useful life	5 years
Other intangibles | Maximum
INTANGIBLE ASSETS
Estimated useful life	15 years

SUMMARY OF SIGNIFICANT ACCOUN_8

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - GOODWILL (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
GOODWILL
Goodwill, Purchase Accounting Adjustments	$ 2
Foreign currency exchange rate changes	$ 1

SUMMARY OF SIGNIFICANT ACCOUN_9

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NET INCOME PER SHARE (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic and diluted income from continuing operations:
Income from continuing operations attributable to Huntsman Corporation									$ 393	$ 608	$ 406
Basic and diluted net income:
Net income (loss) attributable to Huntsman Corporation or Huntsman International	$ 303	$ 30	$ 110	$ 119	$ (340)	$ (11)	$ 414	$ 274	$ 562	$ 337	$ 636
Denominator:
Weighted average shares outstanding (in shares)									228.9	238.1	238.4
Dilutive shares:
Stock-based awards (in shares)									1.7	3.5	5.5
Total weighted average shares outstanding, including dilutive shares									230.6	241.6	243.9

SUMMARY OF SIGNIFICANT ACCOU_10

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - ANTIDILUTIVE SHARES (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Outstanding stock-based awards
Antidilutive shares not included in the computation of income (loss) per share
Weighted average equivalent shares	3	0.8	0.8

SUMMARY OF SIGNIFICANT ACCOU_11

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
PROPERTY, PLANT AND EQUIPMENT
Interest expense capitalized as part of plant and equipment	$ 4	$ 4	$ 9
Buildings and equipment | Minimum
PROPERTY, PLANT AND EQUIPMENT
Estimated useful lives	5 years
Buildings and equipment | Maximum
PROPERTY, PLANT AND EQUIPMENT
Estimated useful lives	50 years
Plant and equipment | Minimum
PROPERTY, PLANT AND EQUIPMENT
Estimated useful lives	3 years
Plant and equipment | Maximum
PROPERTY, PLANT AND EQUIPMENT
Estimated useful lives	30 years
Furniture, fixtures and leasehold improvements | Minimum
PROPERTY, PLANT AND EQUIPMENT
Estimated useful lives	5 years
Furniture, fixtures and leasehold improvements | Maximum
PROPERTY, PLANT AND EQUIPMENT
Estimated useful lives	20 years

SUMMARY OF SIGNIFICANT ACCOU_12

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NEW ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019
RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS
Operating lease liabilities	$ 426
Operating lease right-of-use assets	$ 396
ASU 2016-02 | Restatement Adjustment
RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS
Operating lease liabilities		$ 400
Operating lease right-of-use assets		$ 371

BUSINESS COMBINATION AND ACQUIS

BUSINESS COMBINATION AND ACQUISITIONS - SASOL (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
BUSINESS COMBINATIONS
Net income attributable to Huntsman Corporation / Huntsman International shareholders		$ 303	$ 30	$ 110	$ 119	$ (340)	$ (11)	$ 414	$ 274	$ 562	$ 337	$ 636
Decrease in Huntsman Corporation's / Huntsman International's paid-in capital for purchase of 50% interest in Sasol-Huntsman										(84)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
BUSINESS COMBINATIONS
Net income attributable to Huntsman Corporation / Huntsman International shareholders		$ 306	$ 27	$ 107	$ 116	$ (345)	$ (14)	$ 411	$ 271	551	323	629
Decrease in Huntsman Corporation's / Huntsman International's paid-in capital for purchase of 50% interest in Sasol-Huntsman										(84)
Sasol Huntsman GmbH and Co. KG
BUSINESS COMBINATIONS
Percentage of joint interest acquired	50.00%
Payment to acquire adjusted for debt and other terms	$ 101
Net income attributable to Huntsman Corporation / Huntsman International shareholders										562	337	636
Decrease in Huntsman Corporation's / 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 Corporation / Huntsman International shareholders and transfers to noncontrolling interest										551	337	636
Sasol Huntsman GmbH and Co. KG | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
BUSINESS COMBINATIONS
Percentage of joint interest acquired	50.00%
Net income attributable to Huntsman Corporation / Huntsman International shareholders										551	323	629
Decrease in Huntsman Corporation's / 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 Corporation / Huntsman International shareholders and transfers to noncontrolling interest										$ 540	$ 323	$ 629

BUSINESS COMBINATION AND ACQU_2

BUSINESS COMBINATION AND ACQUISITIONS - DEMILEC (Details) - USD ($) $ in Millions	Apr. 23, 2018	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
BUSINESS COMBINATIONS
Transaction related costs				$ 2	$ 28
Fair value of assets acquired and liabilities assumed:
Goodwill		$ 275	$ 275	275		$ 276
Estimated pro forma revenues and net income (loss) attributable to business acquisition
Revenues				7,662	7,010
Net income				639	728
Net income attributable to business acquisition				326	623
Demilec
BUSINESS COMBINATIONS
Equity interest acquired (as a percent)	100.00%
Transaction related costs				5
Acquired intangible assets estimated useful life	15 years
Revenue from date of acquisition			142
Net income from date of acquisition			5
Fair value of assets acquired and liabilities assumed:
Cash paid for Demilec Acquisition in Q2 2018	$ 357
Purchase price adjustment received in Q3 2018	(4)	(4)
Net acquisition cost	353
Cash	1
Accounts receivable	31
Inventories	23
Prepaid expenses and other current assets	1
Property, plant and equipment, net	21
Intangible assets	177
Goodwill	140
Accounts payable	(16)
Accrued liabilities	(3)
Deferred income taxes	(22)
Total fair value of net assets acquired	$ 353
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
BUSINESS COMBINATIONS
Transaction related costs				2	28
Fair value of assets acquired and liabilities assumed:
Goodwill		$ 275	$ 275	275		$ 276
Estimated pro forma revenues and net income (loss) attributable to business acquisition
Revenues				7,662	7,010
Net income				625	721
Net income attributable to business acquisition				$ 312	$ 616

DISCONTINUED OPERATIONS AND B_3

DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS - CHEMICAL INTERMEDIATES (Details) - USD ($) $ in Millions	Jan. 03, 2020	Dec. 31, 2019	Dec. 31, 2018
Carrying amounts of major classes of assets held for sale:
Total current assets		$ 1,208	$ 232
Total noncurrent assets			877
Carrying amounts of major classes of liabilities held for sale:
Total current liabilities		512	225
Total noncurrent liabilities			283
Chemical Intermediates Businesses | Discontinued Operations, Held-for-sale
Carrying amounts of major classes of assets held for sale:
Accounts receivable		145	89
Inventories		105	134
Other current assets			9
Total current assets			232
Property, plant and equipment, net		720	711
Operating lease right-of-use assets		69
Deferred income taxes		4
Other noncurrent assets		165	166
Total noncurrent assets			877
Total assets held for sale		1,208	1,109
Carrying amounts of major classes of liabilities held for sale:
Accounts payable		152	168
Accrued liabilities		26	57
Current operating lease liabilities		20
Total current liabilities			225
Deferred income taxes		135	159
Noncurrent operating lease liabilities		51
Other noncurrent liabilities		128	124
Total noncurrent liabilities			283
Total liabilities held for sale		$ 512	$ 508
Chemical Intermediates Businesses | Discontinued Operations, Disposed of by Sale
BUSINESS DISPOSITIONS
Purchase price of disposition	$ 2,000
Proceeds from sale of businesses	1,930
Underfunded pension and other post-employment benefit liabilities	72
Net after tax cash proceeds expected to be received	$ 1,600

DISCONTINUED OPERATIONS AND B_4

DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS - OPERATIONS DATA (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Major line items constituting pretax income of discontinued operations:
Income tax expense	$ (35)	$ (86)	$ (111)
Income (loss) from discontinued operations, net of tax	169	(39)	230
Net income (loss) attributable to discontinued operations	169	(271)	230
Chemical Intermediates Businesses | Discontinued Operations, Held-for-sale
Major line items constituting pretax income of discontinued operations:
Trade sales, services and fees, net	1,545	3,923	3,747
Cost of goods sold	1,287	2,847	3,198
Other expense items, net that are not major	54	332	208
Income from discontinued operations before income taxes	204	744	341
Income tax expense	(35)	(86)	(111)
Loss on disposal		(427)
Valuation Allowance		(270)
Income (loss) from discontinued operations, net of tax	169	(39)	230
Net income attributable to noncontrolling interests		(6)	(10)
Net income (loss) attributable to discontinued operations	169	(45)	220
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Major line items constituting pretax income of discontinued operations:
Income tax expense	(35)	(86)	(111)
Income (loss) from discontinued operations, net of tax	169	(39)	227
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Chemical Intermediates Businesses | Discontinued Operations, Held-for-sale
Major line items constituting pretax income of discontinued operations:
Trade sales, services and fees, net	1,545	3,923	3,747
Cost of goods sold	1,287	2,847	3,201
Other expense items, net that are not major	54	332	208
Income from discontinued operations before income taxes	204	744	338
Income tax expense	(35)	(86)	(111)
Loss on disposal		(427)
Valuation Allowance		(270)
Income (loss) from discontinued operations, net of tax	169	(39)	227
Net income attributable to noncontrolling interests		(6)	(10)
Net income (loss) attributable to discontinued operations	$ 169	$ (45)	$ 217

DISCONTINUED OPERATIONS AND B_5

DISCONTINUED OPERATIONS AND BUSINESS DISPOSITIONS - VENATOR (Details) - USD ($) $ in Millions	Dec. 03, 2018	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Jan. 03, 2018
BUSINESS DISPOSITIONS
Aggregate proceeds from sale of investment			$ 16	$ 3
Unrealized losses on fair value adjustments to Venator investment			19	$ 62
Venator Materials PLC
BUSINESS DISPOSITIONS
Aggregate number shares sold	4,334,389
Percentage of equity ownership interest sold	4.00%
Aggregate proceeds from sale of investment		$ 16	$ 19
Ownership interest (as a percent)			49.00%
Unrealized losses on fair value adjustments to Venator investment			$ 19
Possible period of time in which investment shares are not able to be sold			12 months
Venator Materials PLC | Forward Swap
BUSINESS DISPOSITIONS
Realized gain		$ 1
Venator Materials PLC
BUSINESS DISPOSITIONS
Ownership interest (as a percent)					53.00%
Over allotment | Venator Materials PLC
BUSINESS DISPOSITIONS
Underwriters purchased an additional shares					1,948,955

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Inventories
Raw materials and supplies	$ 175	$ 191
Work in progress	49	51
Finished goods	718	798
Total	942	1,040
LIFO reserves	(28)	(40)
Net inventories	$ 914	$ 1,000
Percentage of inventories recorded using the LIFO cost method	9.00%	6.00%

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
PROPERTY, PLANT AND EQUIPMENT
Total	$ 5,688	$ 5,506
Less accumulated depreciation	(3,305)	(3,153)
Net	2,383	2,353
Depreciation expense	245	239	$ 226
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
PROPERTY, PLANT AND EQUIPMENT
Total	5,742	5,560
Less accumulated depreciation	(3,359)	(3,207)
Net	2,383	2,353
Depreciation expense	245	236	$ 217
Land
PROPERTY, PLANT AND EQUIPMENT
Total	103	105
Land | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
PROPERTY, PLANT AND EQUIPMENT
Total	103	105
Buildings
PROPERTY, PLANT AND EQUIPMENT
Total	605	602
Buildings | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
PROPERTY, PLANT AND EQUIPMENT
Total	605	602
Plant and equipment
PROPERTY, PLANT AND EQUIPMENT
Total	4,695	4,550
Plant and equipment | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
PROPERTY, PLANT AND EQUIPMENT
Total	4,749	4,604
Construction in progress
PROPERTY, PLANT AND EQUIPMENT
Total	285	249
Construction in progress | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
PROPERTY, PLANT AND EQUIPMENT
Total	$ 285	$ 249

INVESTMENT IN UNCONSOLIDATED _3

INVESTMENT IN UNCONSOLIDATED AFFILIATES - OWNERSHIP (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Total investments	$ 535	$ 526
Venator Materials PLC
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Total equity method investments	$ 200	219
Ownership interest (as a percent)	49.00%
BASF Huntsman Shanghai Isocyanate Investment BV
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Total equity method investments	$ 112	120
Ownership interest (as a percent)	50.00%
BASF Huntsman Shanghai Isocyanate Investment BV | SLIC
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Ownership interest held by equity method investee that creates an indirect ownership interest by the reporting entity (as a percent)	70.00%
Indirect ownership interest in an unaffiliated entity (as a percent)	35.00%
Nanjing Jinling Huntsman New Material Co., Ltd.
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Total equity method investments	$ 196	163
Ownership interest (as a percent)	49.00%
Jurong Ningwu New Materials Development Co Ltd
INVESTMENT IN UNCONSOLIDATED AFFILIATES
Total equity method investments	$ 27	$ 24
Ownership interest (as a percent)	30.00%

INVESTMENT IN UNCONSOLIDATED _4

INVESTMENT IN UNCONSOLIDATED AFFILIATES - SUMMARIZED FINANCIAL INFORMATION OF UNCONSOLIDATED AFFILIATES (Details) - Unconsolidated affiliates - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment in Unconsolidated Affiliates
Current Assets	$ 1,439	$ 1,548
Noncurrent assets	2,436	2,444
Current liabilities	688	781
Noncurrent liabilities	1,614	1,683
Noncontrolling interests	7	8
Revenues	4,025	2,181	$ 1,109
Gross Profit	454	221	112
Income from continuing operations	99	124	34
Net income	$ 99	$ 124	$ 34

VARIABLE INTEREST ENTITIES (Det

VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	Sep. 30, 2019	Sep. 29, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets and liabilities of VIE
Current assets			$ 3,755				$ 2,958				$ 3,755	$ 2,958
Property, plant and equipment, net			2,383				2,353				2,383	2,353
Operating lease right-of-use assets			396								396
Deferred income taxes			292				324				292	324
Intangible assets			197				213				197	213
Goodwill			276				275				276	275
Total assets			8,320				7,953				8,320	7,953
Current liabilities			2,008				1,611				2,008	1,611
Long-term debt			2,177				2,224				2,177	2,224
Deferred income taxes			29				137				29	137
Noncurrent operating lease liabilities			384								384
Other noncurrent liabilities			898				949				898	949
Total liabilities			5,496				5,204				5,496	5,204
Revenues, income from continuing operations before income taxes and net cash provided by operating activities for our variable interest entities
Total revenues			1,657	$ 1,687	$ 1,784	$ 1,669	1,821	$ 1,968	$ 1,977	$ 1,838	6,797	7,604	$ 6,845
Income from continuing operations before income taxes											391	734	531
Net cash provided by operating activities											897	1,207	1,219
Sasol Huntsman GmbH and Co. KG
Identification of variable interest entities through investments and transactions
Percentage of joint interest acquired	50.00%
Consolidated VIE's
Assets and liabilities of VIE
Current assets			50				92				50	92
Property, plant and equipment, net			180				265				180	265
Operating lease right-of-use assets			16								16
Other noncurrent assets			132				136				132	136
Deferred income taxes			30				32				30	32
Intangible assets			0				10				0	10
Goodwill							14					14
Total assets			408				549				408	549
Current liabilities			151				178				151	178
Long-term debt			29				61				29	61
Deferred income taxes							11					11
Noncurrent operating lease liabilities			11				0				11	0
Other noncurrent liabilities			87				97				87	97
Total liabilities			278				$ 347				278	347
Revenues, income from continuing operations before income taxes and net cash provided by operating activities for our variable interest entities
Total revenues											95	154	132
Income from continuing operations before income taxes											17	40	25
Net cash provided by operating activities											$ 81	$ 65	$ 51
Rubicon LLC
Identification of variable interest entities through investments and transactions
Variable interest entity ownership percentage											50.00%
Arabian Amines Company
Identification of variable interest entities through investments and transactions
Variable interest entity ownership percentage											50.00%
Assets and liabilities of VIE
Long-term debt			$ 29								$ 29
Sasol Huntsman GmbH and Co. KG
Identification of variable interest entities through investments and transactions
Variable interest entity ownership percentage		50.00%

LEASES - NARRATIVE (Details)

LEASES - NARRATIVE (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Variable lease cost	$ 0
Practical expedients - Package	true
Practical expedients - Land easement	true
Practical expedients - Hindsight	true
Option to extend	true
Minimum
Lessee, Lease, Description [Line Items]
Remaining lives	1 month
Option to extend period	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lives	38 years
Option to extend period	30 years

LEASES - COMPONENTS OF LEASE EX

LEASES - COMPONENTS OF LEASE EXPENSE AND CASH FLOWS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of lease expense, cash flows, and supplemental noncash information
Total operating lease expense	$ 56
Operating cash flow from operating leases	53
Leased assets obtained in exchange for new operating lease liabilities	416
Short-term lease expense	1
Lease expense		$ 55	$ 60
Cost of goods sold
Components of lease expense, cash flows, and supplemental noncash information
Total operating lease expense	35
Selling, general and administrative
Components of lease expense, cash flows, and supplemental noncash information
Total operating lease expense	15
Research and development
Components of lease expense, cash flows, and supplemental noncash information
Total operating lease expense	$ 6

LEASES - LEASE TERM AND DISCOUN

LEASES - LEASE TERM AND DISCOUNT RATE (Details)	Dec. 31, 2019
LEASES
Weighted-average remaining lease term (years)	11 years
Weighted-average discount rate	4.10%

LEASES - UNDISCOUNTED CASH FLOW

LEASES - UNDISCOUNTED CASH FLOWS (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Undiscounted cash flows
2020	$ 58
2021	57
2022	52
2023	48
2024	45
Thereafter	268
Total lease payments	528
Less imputed interest	(102)
Total	$ 426
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiabilityCurrent us-gaap:OperatingLeaseLiabilityNoncurrent
Future minimum lease payments
2019		$ 37
2020		33
2021		36
2022		34
2023		32
Thereafter		224
Total		$ 396

LEASES - ADDITIONAL OPERATION L

LEASES - ADDITIONAL OPERATION LEASES (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Components of lease expense, cash flows, and supplemental noncash information
Lease not yet commenced	$ 43
Maximum
Components of lease expense, cash flows, and supplemental noncash information
Lease not yet commenced term	20 years

INTANGIBLE ASSETS (Details)

INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
INTANGIBLE ASSETS
Carrying Amount	$ 518	$ 494
Accumulated Amortization	321	281
Net	197	213
Amortization expense	16	6	$ 3
Estimated future amortization expense for intangible assets
2020	16
2021	15
2022	15
2023	15
2024	15
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
INTANGIBLE ASSETS
Carrying Amount	527	502
Accumulated Amortization	330	289
Net	197	213
Amortization expense	16	6	$ 4
Patents, trademarks and technology
INTANGIBLE ASSETS
Carrying Amount	314	293
Accumulated Amortization	230	209
Net	84	84
Patents, trademarks and technology | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
INTANGIBLE ASSETS
Carrying Amount	314	293
Accumulated Amortization	230	209
Net	84	84
Licenses and other agreements
INTANGIBLE ASSETS
Carrying Amount	140	134
Accumulated Amortization	48	29
Net	92	105
Licenses and other agreements | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
INTANGIBLE ASSETS
Carrying Amount	140	134
Accumulated Amortization	48	29
Net	92	105
Non-compete agreements
INTANGIBLE ASSETS
Carrying Amount	3	3
Accumulated Amortization	2	2
Net	1	1
Non-compete agreements | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
INTANGIBLE ASSETS
Carrying Amount	3	3
Accumulated Amortization	2	2
Net	1	1
Other intangibles
INTANGIBLE ASSETS
Carrying Amount	61	64
Accumulated Amortization	41	41
Net	20	23
Other intangibles | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
INTANGIBLE ASSETS
Carrying Amount	70	72
Accumulated Amortization	50	49
Net	$ 20	$ 23

OTHER NONCURRENT ASSETS (Detail

OTHER NONCURRENT ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OTHER NONCURRENT ASSETS
Capitalized turnaround costs, net	$ 223	$ 172
Catalyst assets, net	24	26
Other	205	195
Total	452	393
Amortization expense of catalyst assets	$ 9	$ 10	$ 7

ACCRUED LIABILITIES (Details)

ACCRUED LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
ACCRUED LIABILITIES
Payroll and related accruals	$ 100	$ 126
Taxes other than income taxes	64	44
Income taxes	59	86
Volume and rebate accruals	53	59
Other miscellaneous accruals	144	182
Total	420	497
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
ACCRUED LIABILITIES
Payroll and related accruals	100	126
Taxes other than income taxes	64	44
Income taxes	59	86
Volume and rebate accruals	53	59
Other miscellaneous accruals	141	179
Total	$ 417	$ 494

RESTRUCTURING, IMPAIRMENT AND_2

RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING COSTS (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2023	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring, impairment and plant closing costs
Proceeds from sale of businesses/assets				$ 50		$ 25
Gain on sale of business/assets				49	$ (3)	8
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Basel Switzerland Production Facilities and Support Offices
Restructuring, impairment and plant closing costs
Proceeds from sale of businesses/assets	$ 49
Gain on sale of business/assets	$ 49
Operating segments | Textile Effects | Basel, Switzerland
Restructuring, impairment and plant closing costs
Restructuring charges						6
Gain on sale of land					4
Corporate Initiatives | Corporate and other
Restructuring, impairment and plant closing costs
Restructuring charges					$ 15
Workforce reductions | Operating segments | Textile Effects
Restructuring, impairment and plant closing costs
Restructuring charges						7
Non-cancelable lease and contract termination costs | Operating segments | Textile Effects | Basel, Switzerland
Restructuring, impairment and plant closing costs
Restructuring charges						2
Restructuring settlement		$ 10
Payments for restructuring				$ 8
Reversal of reserves no longer required		$ (29)
Demolition and decommissioning | Operating segments | Textile Effects | Basel, Switzerland
Restructuring, impairment and plant closing costs
Restructuring charges						$ 4
Forecast | Non-cancelable lease and contract termination costs | Operating segments | Textile Effects | Basel, Switzerland
Restructuring, impairment and plant closing costs
Payments for restructuring			$ 2

OTHER NONCURRENT LIABILITIES (D

OTHER NONCURRENT LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
OTHER NONCURRENT LIABILITIES
Pension liabilities	$ 650	$ 664
Other postretirement benefits	55	54
Employee benefit accrual	38	32
Other	155	199
Total	898	949
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
OTHER NONCURRENT LIABILITIES
Pension liabilities	650	664
Other postretirement benefits	55	54
Employee benefit accrual	38	32
Other	147	187
Total	$ 890	$ 937

DEBT - DEBT OUTSTANDING (Detail

DEBT - DEBT OUTSTANDING (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt
Total debt - excluding debt to affiliates	$ 2,389	$ 2,320
Total current portion of debt	212	96
Long-term portion of debt	2,177	2,224
Total debt	2,389	2,320
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	2,389	2,320
Total current portion of debt	212	96
Long-term portion of debt	2,177	2,224
Notes payable to affiliates-current	100	100
Notes payable to affiliates-noncurrent	280	488
Total debt	2,769	2,908
2018 Revolving Credit Facility
Debt
Total debt - excluding debt to affiliates	40	50
2018 Revolving Credit Facility | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	40	50
Term loan
Debt
Total debt - excluding debt to affiliates	103
Term loan | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	103
Accounts receivable programs
Debt
Total debt - excluding debt to affiliates	167	252
Accounts receivable programs | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	167	252
Senior notes
Debt
Total debt - excluding debt to affiliates	1,963	1,892
Senior notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	1,963	1,892
Variable interest entities
Debt
Total debt - excluding debt to affiliates	65	86
Variable interest entities | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	65	86
Other
Debt
Total debt - excluding debt to affiliates	51	40
Other | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Total debt - excluding debt to affiliates	$ 51	$ 40

DEBT - ISSUANCE COSTS (Details)

DEBT - ISSUANCE COSTS (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
DEBT
Debt issuance costs	$ 11	$ 8

DEBT - CREDIT FACILITIES (Detai

DEBT - CREDIT FACILITIES (Details) € in Millions, $ in Millions	Sep. 30, 2019	Sep. 24, 2019USD ($)	May 21, 2018USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 24, 2019EUR (€)
Debt
Loss on early extinguishment of debt				$ 23	$ 3	$ 54
Sasol Huntsman GmbH and Co. KG
Debt
Percentage of joint interest acquired	50.00%
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Loss on early extinguishment of debt				23	$ 3	$ 54
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Sasol Huntsman GmbH and Co. KG
Debt
Percentage of joint interest acquired	50.00%
2018 Revolving Credit Facility | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Committed Amount				1,200
Optional increase to committed amount of facility				500
Principal Outstanding				40
Carrying value				40
Amount of letter of credit and bank guarantees issued and outstanding				$ 7
2018 Revolving Credit Facility | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | LIBOR
Debt
Basis spread (as a percent)				1.50%
Prior Credit Facility | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Loss on early extinguishment of debt			$ 3
Term loan | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Principal amount of debt		$ 101					€ 92
Term loan | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | EURIBOR
Debt
Basis spread (as a percent)		0.75%
Term loan | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | EURIBOR Floor
Debt
Basis spread (as a percent)		0.00%

DEBT - ACCOUNT RECEIVABLE PROGR

DEBT - ACCOUNT RECEIVABLE PROGRAMS (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)	Jan. 03, 2020USD ($)	Dec. 31, 2019EUR (€)	Apr. 18, 2019EUR (€)	Apr. 17, 2019EUR (€)	Dec. 31, 2018USD ($)
Debt
Debt outstanding	$ 2,389					$ 2,320
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Debt outstanding	2,769					2,908
Accounts receivable programs | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Accounts receivable pledged as collateral	221					$ 341
U.S. A/R Program Maturing April 2022 | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Maximum Funding Availability	250	$ 150
Debt outstanding	100
Amount of letter of credit and bank guarantees issued and outstanding	5
EU A/R Program Maturing April 2022 | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Maximum Funding Availability	112		€ 100	€ 100
Debt outstanding	$ 67		€ 60
U.S. A/R Program Maturing March 2018 | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Maximum Funding Availability | €					€ 150
USD LIBOR or CP | U.S. A/R Program Maturing April 2022 | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Basis spread (as a percent)	0.90%
GDP LIBOR, USD LIBOR, or EURIBOR | EU A/R Program Maturing April 2022 | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Basis spread (as a percent)	1.30%

DEBT - NOTES (Details)

DEBT - NOTES (Details) € in Millions, $ in Millions	Mar. 27, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019EUR (€)	Mar. 13, 2019USD ($)
Debt
Loss on early extinguishment of debt		$ 23	$ 3	$ 54
Carrying amount of debt		2,389	2,320
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Loss on early extinguishment of debt		23	3	$ 54
Carrying amount of debt		$ 2,769	$ 2,908
2020 Senior Notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Early repayment of debt	$ 650
Interest rate (as a percent)	4.875%
Debt costs associated with redeemed debt	$ 21
Debt accrued interest	12
Loss on early extinguishment of debt	$ 23
2021 Senior Notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Interest rate (as a percent)		5.125%			5.125%
Principal Outstanding | €					€ 445
Carrying amount of debt		$ 496			€ 445
2022 Senior Notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Interest rate (as a percent)		5.125%			5.125%
Principal Outstanding		$ 400
Carrying amount of debt		398
Unamortized premium discounts and debt issuance costs		$ (2)
2025 Senior Notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Interest rate (as a percent)		4.25%			4.25%
Principal Outstanding | €					€ 300
Carrying amount of debt		$ 333			€ 298
Unamortized premium discounts and debt issuance costs		$ (2)
2029 Senior Notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Face amount						$ 750
Interest rate (as a percent)		4.50%			4.50%	4.50%
Principal Outstanding		$ 750
Carrying amount of debt		736
Unamortized premium discounts and debt issuance costs		$ (14)
Percentage of principal amount at which the entity may redeem debt		100.00%
Debt Instrument Redemption Period Upon Occurrence Certain Change Of Control Events | Senior notes | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Percentage of principal amount at which the entity may redeem debt		101.00%

DEBT - VARIABLE INTEREST ENTITY

DEBT - VARIABLE INTEREST ENTITY DEBT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt
Total debt - excluding debt to affiliates	$ 2,389	$ 2,320
Total current portion of debt	212	96
Long-term portion of debt	2,177	2,224
Consolidated VIE's
Debt
Total current portion of debt	36	25
Long-term portion of debt	$ 29	$ 61
Arabian Amines Company
Debt
Variable interest entity ownership percentage	50.00%
Total debt - excluding debt to affiliates	$ 65
Total current portion of debt	36
Long-term portion of debt	$ 29

DEBT - INTERCOMPANY NOTES AND O

DEBT - INTERCOMPANY NOTES AND OTHER (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt
Loan to subsidiary	$ 380
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Debt
Notes payable to affiliates-current	$ 100	$ 100
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | U.S. A/R Program
Debt
Reduction in applicable margin on borrowings (as a percent)	0.10%
Maximum | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | U.S. A/R Program
Debt
Reduction in applicable margin on borrowings (as a percent)	0.25%

DEBT - MATURITIES (Details)

DEBT - MATURITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Scheduled maturities of our debt (excluding debt to affiliates)
2020	$ 212
2021	522
2022	570
2023	1
2024	2
Thereafter	1,082
Total debt - excluding debt to affiliates	$ 2,389	$ 2,320

DERIVATIVE INSTRUMENTS AND HE_2

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) € in Millions, $ in Millions	Jan. 09, 2019USD ($)	Nov. 30, 2019USD ($)	Aug. 31, 2017USD ($)	Nov. 30, 2014EUR (€)item	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2019EUR (€)	Dec. 31, 2019USD ($)	Nov. 30, 2014USD ($)item
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Notional Amounts								€ 435	$ 485
Amount of gain (loss) recognized on the hedge of net investments					$ 14	$ 35	$ (96)
Proceeds from termination							$ 7
Forward foreign currency contracts
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Notional Amounts						$ 151			$ 135
Maximum maturity period of spot or forward exchange rate contracts					3 months
Approximate term of foreign currency contracts					1 month
Cross Currency Interest Rate Contracts | Designated as Hedging Instrument
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Notional Amounts				€ 161						$ 200
Proceeds from termination			$ 7
Five years cross currency interest rate contract | Designated as Hedging Instrument
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Number of derivative instruments held | item				2						2
Term of cross currency interest rate contract				5 years
Eight years cross currency interest rate contract | Designated as Hedging Instrument
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Number of derivative instruments held | item				1						1
Term of cross currency interest rate contract				8 years
Six-year interest rate contract entered in year 2019 | Designated as Hedging Instrument
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Hedging period of interest rate contract	6 years
Notional Amounts	$ 17
Fixed rate	2.66%
Amount paid to counterparties		$ 1
Derivative settlement to be amortized from AOCI into earnings		$ 1

FAIR VALUE - FAIR VALUES OF FIN

FAIR VALUE - FAIR VALUES OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Fair values of financial instruments
Non-qualified employee benefit plan investments	$ 39	$ 32
Carrying Amount
Fair values of financial instruments
Non-qualified employee benefit plan investments	28	23
Forward swap contract related to the sale of investment in Venator		14
Long-term debt (including current portion)	(2,389)	(2,320)
Estimated Fair Value
Fair values of financial instruments
Non-qualified employee benefit plan investments	28	23
Forward swap contract related to the sale of investment in Venator		14
Long-term debt (including current portion)	$ (2,544)	$ (2,403)

FAIR VALUE - ASSETS AND LIABILI

FAIR VALUE - ASSETS AND LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS (Details) - Recurring basis - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets:
Non-qualified employee benefit plan investments	$ 28	$ 23
Forward swap contract related to the sale of investment in Venator		14
Total assets		37
Quoted prices in active markets for identical assets (Level 1)
Assets:
Non-qualified employee benefit plan investments	$ 28	23
Total assets		23
Significant other observable inputs (Level 2)
Assets:
Forward swap contract related to the sale of investment in Venator		14
Total assets		$ 14

FAIR VALUE - INSTRUMENTS MEASUR

FAIR VALUE - INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS USING SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3) AND INSTRUMENTS MEASURED AT FAIR VALUE ON A NON-RECURRING BASIS (Details) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2019USD ($)	Dec. 31, 2019USD ($)item	Dec. 31, 2018USD ($)item
Reconciliation of beginning and ending balances for assets measured at fair value on a recurring basis
Number of instruments categorized as Level 3 | item		0	0
Cash received from forward swap contract related to the sale of investment in Venator		$ 16	$ 3
Recurring basis
Reconciliation of beginning and ending balances for assets measured at fair value on a recurring basis
Cash received from forward swap contract related to the sale of investment in Venator	$ 16
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings		$ 0	$ 0

REVENUE RECOGNITION (Details)

REVENUE RECOGNITION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of revenue
Practical expedient - incremental cost	true
Practical expedient - financing component	true
Total revenues	$ 6,797	$ 7,604
MDI Urethanes
Disaggregation of revenue
Total revenues	3,911	4,282
Differentiated
Disaggregation of revenue
Total revenues	1,158	1,301
Specialty
Disaggregation of revenue
Total revenues	891	932
Non-specialty
Disaggregation of revenue
Total revenues	153	184
Textile Chemicals and Dyes and Digital Inks
Disaggregation of revenue
Total revenues	763	824
U.S. and Canada
Disaggregation of revenue
Total revenues	2,293	2,487
Europe
Disaggregation of revenue
Total revenues	1,896	2,209
Asia Pacific
Disaggregation of revenue
Total revenues	2,039	2,276
Rest of world
Disaggregation of revenue
Total revenues	569	632
Polyurethanes
Disaggregation of revenue
Total revenues	3,911	4,282
Polyurethanes | MDI Urethanes
Disaggregation of revenue
Total revenues	3,911	4,282
Polyurethanes | U.S. and Canada
Disaggregation of revenue
Total revenues	1,475	1,426
Polyurethanes | Europe
Disaggregation of revenue
Total revenues	1,051	1,277
Polyurethanes | Asia Pacific
Disaggregation of revenue
Total revenues	1,078	1,236
Polyurethanes | Rest of world
Disaggregation of revenue
Total revenues	307	343
Performance Products
Disaggregation of revenue
Total revenues	1,158	1,301
Performance Products | Differentiated
Disaggregation of revenue
Total revenues	1,158	1,301
Performance Products | U.S. and Canada
Disaggregation of revenue
Total revenues	531	586
Performance Products | Europe
Disaggregation of revenue
Total revenues	316	368
Performance Products | Asia Pacific
Disaggregation of revenue
Total revenues	248	278
Performance Products | Rest of world
Disaggregation of revenue
Total revenues	63	69
Advanced Materials
Disaggregation of revenue
Total revenues	1,044	1,116
Advanced Materials | Specialty
Disaggregation of revenue
Total revenues	891	932
Advanced Materials | Non-specialty
Disaggregation of revenue
Total revenues	153	184
Advanced Materials | U.S. and Canada
Disaggregation of revenue
Total revenues	289	285
Advanced Materials | Europe
Disaggregation of revenue
Total revenues	410	445
Advanced Materials | Asia Pacific
Disaggregation of revenue
Total revenues	269	301
Advanced Materials | Rest of world
Disaggregation of revenue
Total revenues	76	85
Textile Effects
Disaggregation of revenue
Total revenues	763	824
Textile Effects | Textile Chemicals and Dyes and Digital Inks
Disaggregation of revenue
Total revenues	763	824
Textile Effects | U.S. and Canada
Disaggregation of revenue
Total revenues	62	68
Textile Effects | Europe
Disaggregation of revenue
Total revenues	128	135
Textile Effects | Asia Pacific
Disaggregation of revenue
Total revenues	446	485
Textile Effects | Rest of world
Disaggregation of revenue
Total revenues	127	136
Corporate and eliminations
Disaggregation of revenue
Total revenues	(79)	81
Corporate and eliminations | U.S. and Canada
Disaggregation of revenue
Total revenues	(64)	122
Corporate and eliminations | Europe
Disaggregation of revenue
Total revenues	(9)	(16)
Corporate and eliminations | Asia Pacific
Disaggregation of revenue
Total revenues	(2)	(24)
Corporate and eliminations | Rest of world
Disaggregation of revenue
Total revenues	$ (4)	$ (1)

EMPLOYEE BENEFIT PLANS - INFORM

EMPLOYEE BENEFIT PLANS - INFORMATION (Details)	12 Months Ended
	Dec. 31, 2019item
Defined Benefit Plans | Minimum
EMPLOYEE BENEFIT PLANS
Annual pay credits, percentage of eligible pay	6.00%
Defined Benefit Plans | Maximum
EMPLOYEE BENEFIT PLANS
Annual pay credits, percentage of eligible pay	12.00%
Other Postretirement Benefit Plans
EMPLOYEE BENEFIT PLANS
Number of fully insured Medicare Part D plans in which participants have access	2
Salary deferral plan for new hires | United States | Maximum
EMPLOYEE BENEFIT PLANS
Non-discretionary employer contributions (as a percent)	6.00%
Employer contribution (as a percent of compensation)	4.00%
Total employer contribution (as a percent)	10.00%

EMPLOYEE BENEFIT PLANS - CHANGE

EMPLOYEE BENEFIT PLANS - CHANGE IN BENEFIT OBLIGATION AND PLAN ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans
Change in plan assets
Fair value of plan assets at beginning of year	$ 2,400
Fair value of plan assets at end of year	2,800	$ 2,400
Funded status
Fair value of plan assets	2,400	2,400		$ 2,800	$ 2,400
Defined Benefit Plans | United States
Change in benefit obligation
Benefit obligation at beginning of year	956	1,028
Service cost	20	23	$ 22
Interest cost	41	39	39
Settlements/transfers/divestitures	20	(6)
Actuarial (gain) loss	65	(67)
Benefits paid	(78)	(61)
Benefit obligation at end of year	1,024	956	1,028
Change in plan assets
Fair value of plan assets at beginning of year	697	747
Actual return on plan assets	107	(27)
Settlement/transfers/divestitures	19	(6)
Company contributions	45	44
Benefits paid	(78)	(61)
Fair value of plan assets at end of year	790	697	747
Funded status
Fair value of plan assets	697	697	747	790	697
Benefit obligation	1,024	1,028	1,028	1,024	956
Accrued benefit cost				(234)	(259)
Amounts recognized in balance sheet:
Current liability				(5)	(5)
Noncurrent liability				(229)	(254)
Total				(234)	(259)
Defined Benefit Plans | Non-U.S. Defined Benefit Plans
Change in benefit obligation
Benefit obligation at beginning of year	2,157	2,259
Service cost	30	32	33
Interest cost	37	37	35
Participant contributions	6	5
Plan amendments	(9)	4
Foreign currency exchange rate changes	7	(74)
Settlements/transfers/divestitures	(2)	(3)
Actuarial (gain) loss	224	(30)
Benefits paid	(73)	(73)
Benefit obligation at end of year	2,377	2,157	2,259
Change in plan assets
Fair value of plan assets at beginning of year	1,751	1,883
Actual return on plan assets	224	(38)
Foreign currency exchange rate changes	11	(62)
Participant contributions	6	5
Settlement/transfers/divestitures	(2)	(3)
Company contributions	43	39
Benefits paid	(73)	(73)
Fair value of plan assets at end of year	1,960	1,751	1,883
Funded status
Fair value of plan assets	1,751	1,751	1,883	1,960	1,751
Benefit obligation	2,157	2,157	2,259	2,377	2,157
Accrued benefit cost				(417)	(406)
Amounts recognized in balance sheet:
Noncurrent asset				10	10
Current liability				(6)	(6)
Noncurrent liability				(421)	(410)
Total				(417)	(406)
Other Postretirement Benefit Plans | United States
Change in benefit obligation
Benefit obligation at beginning of year	59	69
Service cost	1	2	2
Interest cost	3	2	3
Participant contributions	2	2
Settlements/transfers/divestitures	1
Actuarial (gain) loss		(9)
Benefits paid	(6)	(7)
Benefit obligation at end of year	60	59	69
Change in plan assets
Participant contributions	2	2
Company contributions	4	5
Benefits paid	(6)	(7)
Funded status
Benefit obligation	$ 60	$ 59	$ 69	60	59
Accrued benefit cost				(60)	(59)
Amounts recognized in balance sheet:
Current liability				(5)	(5)
Noncurrent liability				(55)	(54)
Total				$ (60)	$ (59)

EMPLOYEE BENEFIT PLANS - AMOUNT

EMPLOYEE BENEFIT PLANS - AMOUNTS RECOGNIZED AND AMOUNTS EXPECTED TO BE RECOGNIZED IN OTHER COMPREHENSIVE INCOME LOSS AND COMPONENTS OF NET PERIODIC BENEFIT COST (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of net periodic benefit cost
Amortization of actuarial loss	$ 66	$ 67	$ 69
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of net periodic benefit cost
Amortization of actuarial loss	70	71	72
Defined Benefit Plans | United States
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	394	401
Prior service credit	(11)	(13)
Total	383	388
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year
Actuarial loss	28
Prior service credit	(2)
Total	26
Components of net periodic benefit cost
Service cost	20	23	22
Interest cost	41	39	39
Expected return on assets	(53)	(54)	(48)
Amortization of prior service benefit	(2)	(2)	(2)
Amortization of actuarial loss	23	31	27
Settlement loss		2
Net periodic benefit cost (credit)	29	39	38
Defined Benefit Plans | United States | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	395	402
Prior service credit	(11)	(13)
Total	384	389
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year
Actuarial loss	28
Prior service credit	(2)
Total	26
Components of net periodic benefit cost
Service cost	20	23	22
Interest cost	41	39	39
Expected return on assets	(53)	(54)	(48)
Amortization of prior service benefit	(2)	(2)	(2)
Amortization of actuarial loss	23	31	27
Settlement loss		2
Net periodic benefit cost (credit)	29	39	38
Defined Benefit Plans | Non-U.S. Defined Benefit Plans
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	840	784
Prior service credit	(32)	(27)
Total	808	757
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year
Actuarial loss	53
Prior service credit	(5)
Total	48
Components of net periodic benefit cost
Service cost	30	32	33
Interest cost	37	37	35
Expected return on assets	(102)	(109)	(100)
Amortization of prior service benefit	(4)	(5)	(5)
Amortization of actuarial loss	45	38	45
Settlement loss	1
Special termination benefits			1
Net periodic benefit cost (credit)	7	(7)	9
Defined Benefit Plans | Non-U.S. Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	846	793
Prior service credit	(31)	(27)
Total	815	766
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year
Actuarial loss	56
Prior service credit	(5)
Total	51
Components of net periodic benefit cost
Service cost	30	32	33
Interest cost	37	37	35
Expected return on assets	(102)	(109)	(100)
Amortization of prior service benefit	(4)	(5)	(5)
Amortization of actuarial loss	48	41	48
Settlement loss	1
Special termination benefits			1
Net periodic benefit cost (credit)	10	(4)	12
Other Postretirement Benefit Plans | United States
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	20	21
Prior service credit	(33)	(38)
Total	(13)	(17)
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year
Actuarial loss	1
Prior service credit	(5)
Total	(4)
Components of net periodic benefit cost
Service cost	1	2	2
Interest cost	3	2	3
Amortization of prior service benefit	(5)	(5)	(6)
Amortization of actuarial loss	1	2	3
Net periodic benefit cost (credit)		1	2
Other Postretirement Benefit Plans | United States | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	20	21
Prior service credit	(33)	(38)
Total	(13)	(17)
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year
Actuarial loss	1
Prior service credit	(5)
Total	(4)
Components of net periodic benefit cost
Service cost	1	2	2
Interest cost	3	2	3
Amortization of prior service benefit	(5)	(5)	(6)
Amortization of actuarial loss	$ 1	2	3
Net periodic benefit cost (credit)		$ 1	$ 2

EMPLOYEE BENEFIT PLANS - AMOU_2

EMPLOYEE BENEFIT PLANS - AMOUNTS RECOGNIZED IN NET PERIODIC BENEFIT COST AND OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plans | United States
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Current year actuarial loss (gain)	$ 19	$ 18	$ 42
Amortization of actuarial loss	(26)	(34)	(30)
Amortization of prior service credit	2	2	2
Settlements		(2)
Total recognized in other comprehensive income (loss)	(5)	(16)	14
Amounts related to discontinued operations	9	(4)
Total recognized in other comprehensive income (loss) in continuing operations	4	(20)	14
Net periodic benefit cost	29	39	38
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 33	$ 19	$ 52
Projected benefit obligation:
Discount rate (as a percent)	3.59%	4.39%	3.74%
Rate of compensation increase (as a percent)	4.09%	4.10%	4.10%
Net periodic pension cost:
Discount rate (as a percent)	4.39%	3.74%	4.24%
Rate of compensation increase (as a percent)	4.07%	4.10%	4.14%
Expected return on plan assets (as a percent)	7.52%	7.52%	7.53%
Defined Benefit Plans | United States | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Current year actuarial loss (gain)	$ 19	$ 18	$ 42
Amortization of actuarial loss	(26)	(34)	(30)
Amortization of prior service credit	2	2	2
Settlements		(2)
Total recognized in other comprehensive income (loss)	(5)	(16)	14
Amounts related to discontinued operations	9	(4)
Total recognized in other comprehensive income (loss) in continuing operations	4	(20)	14
Net periodic benefit cost	29	39	38
Total recognized in net periodic benefit cost and other comprehensive income (loss)	33	19	52
Defined Benefit Plans | Non-U.S. Defined Benefit Plans
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Current year actuarial loss (gain)	101	117	(42)
Amortization of actuarial loss	(45)	(38)	(61)
Current year prior service (credit) cost	(10)	4	(2)
Amortization of prior service credit	4	5	4
Settlements	1
Curtailment (gain)/loss			3
Total recognized in other comprehensive income (loss)	51	88	(98)
Amounts related to discontinued operations			37
Total recognized in other comprehensive income (loss) in continuing operations	51	88	(61)
Net periodic benefit cost	7	(7)	9
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 58	$ 81	$ (52)
Projected benefit obligation:
Discount rate (as a percent)	1.07%	1.75%	1.65%
Rate of compensation increase (as a percent)	2.65%	2.95%	3.38%
Net periodic pension cost:
Discount rate (as a percent)	1.75%	1.65%	1.82%
Rate of compensation increase (as a percent)	2.64%	3.38%	3.51%
Expected return on plan assets (as a percent)	5.89%	5.88%	5.68%
Defined Benefit Plans | Non-U.S. Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Current year actuarial loss (gain)	$ 101	$ 117	$ (42)
Amortization of actuarial loss	(48)	(41)	(68)
Current year prior service (credit) cost	(10)	4	(2)
Amortization of prior service credit	4	5	4
Settlements	1
Curtailment (gain)/loss			3
Total recognized in other comprehensive income (loss)	48	85	(105)
Amounts related to discontinued operations			42
Total recognized in other comprehensive income (loss) in continuing operations	48	85	(63)
Net periodic benefit cost	10	(4)	12
Total recognized in net periodic benefit cost and other comprehensive income (loss)	58	81	(51)
Other Postretirement Benefit Plans | United States
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Current year actuarial loss (gain)		(10)	(12)
Amortization of actuarial loss	(1)	(2)	(3)
Amortization of prior service credit	5	6	6
Total recognized in other comprehensive income (loss)	4	(6)	(9)
Amounts related to discontinued operations	(6)
Total recognized in other comprehensive income (loss) in continuing operations	(2)	(6)	(9)
Net periodic benefit cost		1	2
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (2)	$ (5)	$ (7)
Projected benefit obligation:
Discount rate (as a percent)	3.46%	4.26%	3.58%
Net periodic pension cost:
Discount rate (as a percent)	4.26%	3.58%	4.04%
Other Postretirement Benefit Plans | United States | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Current year actuarial loss (gain)		$ (10)	$ (12)
Amortization of actuarial loss	$ (1)	(2)	(3)
Amortization of prior service credit	5	6	6
Total recognized in other comprehensive income (loss)	4	(6)	(9)
Amounts related to discontinued operations	(6)
Total recognized in other comprehensive income (loss) in continuing operations	(2)	(6)	(9)
Net periodic benefit cost		1	2
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (2)	$ (5)	(7)
Other Postretirement Benefit Plans | Non-U.S. Defined Benefit Plans
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Amortization of actuarial loss			(1)
Amortization of prior service credit			2
Total recognized in other comprehensive income (loss)			1
Amounts related to discontinued operations			$ (1)
Projected benefit obligation:
Discount rate (as a percent)	2.90%	3.50%	3.30%
Net periodic pension cost:
Discount rate (as a percent)	3.50%	3.30%	3.50%
Other Postretirement Benefit Plans | Non-U.S. Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Amounts recognized in net periodic benefit cost and other comprehensive income (loss)
Amortization of actuarial loss			$ (1)
Amortization of prior service credit			2
Total recognized in other comprehensive income (loss)			1
Amounts related to discontinued operations			$ (1)

EMPLOYEE BENEFIT PLANS - HEALTH

EMPLOYEE BENEFIT PLANS - HEALTH CARE TREND RATES, EFFECTS OF ONE PERCENT CHANGE IN HEALTH CARE COST RATES AND EXPECTED BENEFIT PAYMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Health care trend rate
Health care trend rate (as a percent)	6.50%	6.50%
Ultimate health care trend rate (as a percent)	5.00%	5.00%
Effects of one-percent-point change in assumed health care cost trend rates
Effect on postretirement benefit obligation, Increase	$ 2
Effect on postretirement benefit obligation, Decrease	(1)
Expected benefit payments:
Net transfer out of Level 3 assets due to a change in the significance of unobservable inputs for several investments	0
Net transfer in to Level 3 assets due to a change in the significance of unobservable inputs for several investments	0
Defined Benefit Plans | United States
Projected benefit obligation in excess of plan assets
Projected benefit obligation	1,024	$ 956
Fair value of plan assets	790	697
Accumulated benefit obligation in excess of plan assets
Projected benefit obligation	1,024	956
Accumulated benefit obligation	1,019	935
Fair value of plan assets	790	697
2020 expected employer contributions
To plan trusts	45
Expected benefit payments:
2020	59
2021	62
2022	65
2023	69
2024	98
2025 - 2029	325
Defined Benefit Plans | Non-U.S. Defined Benefit Plans
Projected benefit obligation in excess of plan assets
Projected benefit obligation	2,203	1,790
Fair value of plan assets	1,777	1,375
Accumulated benefit obligation in excess of plan assets
Projected benefit obligation	1,066	986
Accumulated benefit obligation	991	919
Fair value of plan assets	664	$ 608
2020 expected employer contributions
To plan trusts	38
Expected benefit payments:
2020	78
2021	77
2022	81
2023	85
2024	84
2025 - 2029	447
Other Postretirement Benefit Plans | United States
2020 expected employer contributions
To plan trusts	5
Expected benefit payments:
2020	5
2021	5
2022	5
2023	5
2024	5
2025 - 2029	$ 24

EMPLOYEE BENEFIT PLANS - FAIR V

EMPLOYEE BENEFIT PLANS - FAIR VALUE OF RECURRING PLAN ASSETS (Details) - Defined Benefit Plans - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	$ 2,800	$ 2,400
United States
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	790	697	$ 747
United States | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	503	454
United States | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	220	178
United States | Significant unobservable inputs (Level 3)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	67	65
United States | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	790	697
Non-U.S. Defined Benefit Plans
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	1,960	1,751	1,883
Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	959	786
Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	944	909
Non-U.S. Defined Benefit Plans | Significant unobservable inputs (Level 3)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	57	56
Non-U.S. Defined Benefit Plans | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	1,960	1,751
Investments in equity securities | United States | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	283	242
Investments in equity securities | United States | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	139	107
Investments in equity securities | United States | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	422	349
Investments in equity securities | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	228	161
Investments in equity securities | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	307	310
Investments in equity securities | Non-U.S. Defined Benefit Plans | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	535	471
Fixed income | United States | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	220	212
Fixed income | United States | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	81	71
Fixed income | United States | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	301	283
Fixed income | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	560	496
Fixed income | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	287	251
Fixed income | Non-U.S. Defined Benefit Plans | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	847	747
Real Estate/Other | Significant unobservable inputs (Level 3)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	124	121	$ 117
Real Estate/Other | United States | Significant unobservable inputs (Level 3)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	67	65
Real Estate/Other | United States | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	67	65
Real Estate/Other | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	99	93
Real Estate/Other | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	349	348
Real Estate/Other | Non-U.S. Defined Benefit Plans | Significant unobservable inputs (Level 3)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	57	56
Real Estate/Other | Non-U.S. Defined Benefit Plans | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	505	497
Cash | Non-U.S. Defined Benefit Plans | Quoted prices in active markets for identical assets (Level 1)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	72	36
Cash | Non-U.S. Defined Benefit Plans | Significant other observable inputs (Level 2)
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	1
Cash | Non-U.S. Defined Benefit Plans | Recurring basis
EMPLOYEE BENEFIT PLANS
Fair value of plan assets	$ 73	$ 36

EMPLOYEE BENEFIT PLANS - FAIR_2

EMPLOYEE BENEFIT PLANS - FAIR VALUE USING UNOBSERVABLE INPUTS (Details) - Defined Benefit Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)
Fair value of plan assets at beginning of year	$ 2,400
Fair value of plan assets at end of year	2,800	$ 2,400
Significant unobservable inputs (Level 3) | Real Estate/Other
Fair Value Measurements of Plan Assets Using Significant Unobservable Inputs (Level 3)
Fair value of plan assets at beginning of year	121	117
Return on pension plan assets	4	4
Purchases, sales and settlements	(1)
Fair value of plan assets at end of year	$ 124	$ 121

EMPLOYEE BENEFIT PLANS - ASSET

EMPLOYEE BENEFIT PLANS - ASSET ALLOCATION (Details) - Defined Benefit Plans	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2020
Minimum
EMPLOYEE BENEFIT PLANS
Expected long term rate of return on the pension assets (as a percent)	5.68%
Maximum
EMPLOYEE BENEFIT PLANS
Expected long term rate of return on the pension assets (as a percent)	7.53%
United States
EMPLOYEE BENEFIT PLANS
Expected long term rate of return on the pension assets (as a percent)	7.52%	7.52%	7.53%
Allocation (as a percent)	100.00%	100.00%
United States | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				100.00%
United States | Investments in equity securities
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	54.00%	50.00%
United States | Investments in equity securities | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				53.00%
United States | Fixed income
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	38.00%	41.00%
United States | Fixed income | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				39.00%
United States | Real Estate/Other
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	8.00%	9.00%
United States | Real Estate/Other | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				5.00%
United States | Cash | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				3.00%
Non-U.S. Defined Benefit Plans
EMPLOYEE BENEFIT PLANS
Expected long term rate of return on the pension assets (as a percent)	5.89%	5.88%	5.68%
Allocation (as a percent)	100.00%	100.00%
Non-U.S. Defined Benefit Plans | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				100.00%
Non-U.S. Defined Benefit Plans | Investments in equity securities
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	27.00%	27.00%
Non-U.S. Defined Benefit Plans | Investments in equity securities | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				31.00%
Non-U.S. Defined Benefit Plans | Fixed income
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	43.00%	43.00%
Non-U.S. Defined Benefit Plans | Fixed income | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				44.00%
Non-U.S. Defined Benefit Plans | Real Estate/Other
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	26.00%	28.00%
Non-U.S. Defined Benefit Plans | Real Estate/Other | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				15.00%
Non-U.S. Defined Benefit Plans | Cash
EMPLOYEE BENEFIT PLANS
Allocation (as a percent)	4.00%	2.00%
Non-U.S. Defined Benefit Plans | Cash | Forecast
EMPLOYEE BENEFIT PLANS
Target allocation (as a percent)				10.00%

EMPLOYEE BENEFIT PLANS - DEFINE

EMPLOYEE BENEFIT PLANS - DEFINED CONTRIBUTION PLANS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SUPPLEMENTAL SALARY DEFERRAL PLAN AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN
Maximum percentage of salary which participant can defer under Huntsman supplemental deferral plan	75.00%
Carrying amount of assets included in other noncurrent assets	$ 39	$ 32
Deferred compensation expense	1	1	$ 1
United States
DEFINED CONTRIBUTION PLANS
Total defined contribution expense	17	16	16
Non-U.S. Defined Benefit Plans
DEFINED CONTRIBUTION PLANS
Total defined contribution expense	$ 4	$ 4	$ 5
Money purchase pension plan | United States
DEFINED CONTRIBUTION PLANS
Non-discretionary employer contributions (as a percent)	8.00%
Salary deferral plan | United States | Maximum
DEFINED CONTRIBUTION PLANS
Employer contribution (as a percent of compensation)	4.00%
Salary deferral plan for new hires | United States | Maximum
DEFINED CONTRIBUTION PLANS
Non-discretionary employer contributions (as a percent)	6.00%
Employer contribution (as a percent of compensation)	4.00%
Huntsman UK Pension Plan | Non-U.S. Defined Benefit Plans
DEFINED CONTRIBUTION PLANS
Transition period for contributions	5 years
Employer contribution (as a percent of compensation)	15.00%
Huntsman UK Pension Plan New Hires | Non-U.S. Defined Benefit Plans | Maximum
DEFINED CONTRIBUTION PLANS
Employer contribution (as a percent of compensation)	12.00%

EMPLOYEE BENEFIT PLANS - STOCK

EMPLOYEE BENEFIT PLANS - STOCK BASED INCENTIVE PLAN (Details) - shares shares in Millions	Dec. 31, 2019	May 05, 2016
the "Prior Plan"
STOCK-BASED COMPENSATION PLANS
Shares available for grant		0
2016 Stock Incentive Plan
STOCK-BASED COMPENSATION PLANS
Authorized number of shares to be granted under the Stock Incentive Plan		8.2
Shares available for grant	8

INCOME TAXES - COMPONENTS OF IN

INCOME TAXES - COMPONENTS OF INCOME TAX EXPENSE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
U.S.
Current	$ (17)	$ 57	$ 23
Deferred	(181)	(30)	(133)
Non-U.S.
Current	71	153	88
Deferred	89	(135)	42
Total income tax (benefit) expense	(38)	45	20
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
U.S.
Current	(21)	57	16
Deferred	(179)	(34)	(130)
Non-U.S.
Current	70	153	88
Deferred	89	(135)	43
Total income tax (benefit) expense	$ (41)	$ 41	$ 17

INCOME TAXES - RECONCILIATION T

INCOME TAXES - RECONCILIATION TABLE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation between the U.S. federal income taxes at the U.S. statutory rate to the provision (benefit) for income taxes
Income from continuing operations before income taxes	$ 391	$ 734	$ 531
Expected tax expense at U.S. statutory rate of 21%, 21% and 35%	82	154	186
Change resulting from:
State tax expense net of federal benefit	(3)	(1)	(2)
Non-U.S. tax rate differentials	9	27	(67)
U.S. Tax Reform Act impact	(1)	32	(52)
Currency exchange gains/losses (net)	(5)	(10)	15
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	16
Tax authority audits and dispute resolutions	(6)	5	9
Share-based compensation excess tax benefits	(4)	(14)	(10)
Change in valuation allowance	56	(185)	(72)
Deferred tax effects of non-U.S. tax rate changes	36	(2)	4
Impact of equity method investments	(13)	(14)	(3)
Other non-U.S. tax effects, including nondeductible expenses transfer pricing adjustments and various withholding taxes	19	19	3
Other U.S. tax effects, including nondeductible expenses and other credits	2		9
Total income tax (benefit) expense	$ (38)	$ 45	$ 20
U.S. income tax statutory rate (as a percent)	21.00%	21.00%	35.00%
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Reconciliation between the U.S. federal income taxes at the U.S. statutory rate to the provision (benefit) for income taxes
Income from continuing operations before income taxes	$ 377	$ 716	$ 524
Expected tax expense at U.S. statutory rate of 21%, 21% and 35%	79	150	183
Change resulting from:
State tax expense net of federal benefit	(3)	(1)	(2)
Non-U.S. tax rate differentials	9	27	(67)
U.S. Tax Reform Act impact	(1)	32	(53)
Currency exchange gains/losses (net)	(5)	(10)	15
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	16
Tax authority audits and dispute resolutions	(6)	5	9
Share-based compensation excess tax benefits	(4)	(14)	(10)
Change in valuation allowance	56	(185)	(72)
Deferred tax effects of non-U.S. tax rate changes	36	(2)	4
Impact of equity method investments	(13)	(14)	(3)
Other non-U.S. tax effects, including nondeductible expenses transfer pricing adjustments and various withholding taxes	19	19	4
Other U.S. tax effects, including nondeductible expenses and other credits	2		9
Total income tax (benefit) expense	$ (41)	$ 41	$ 17
U.S. income tax statutory rate (as a percent)	21.00%	21.00%	35.00%

INCOME TAXES - RECONCILIATION N

INCOME TAXES - RECONCILIATION NARRATIVE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax
Non-U.S. tax rate net provision (benefit)	$ 9	$ 27	$ (67)
Tax benefit (expense) from currency exchange gains	5	$ 10	$ (15)
Deferred tax asset from basis adjustment in Venator investment	199
Switzerland
Income Tax
Decrease in noncash tax expense	32
Venator Materials PLC
Income Tax
Deferred tax asset from basis adjustment in Venator investment	199
Valuation allowance	46
Tax benefit related to realized portion of deferred tax asset attributable to basis difference in investment	$ 153

INCOME TAXES - U.S. TAX REFORM

INCOME TAXES - U.S. TAX REFORM ACT (Details) - USD ($) $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
U.S. Tax Reform Act
Net tax benefits due to enactment of U.S. Tax Reform Act				$ 20
Net tax benefits from due to remeasurement of deferred tax assets and liabilities				135
Income tax benefit from remeasurement of deferred assets and liabilities			$ 137
Final tax expense from remeasurement of deferred assets and liabilities		$ 2
Net tax expenses due to transition tax on deemed repatriation of deferred foreign income				$ 115
Provisional tax expense due to transition tax on deemed repatriation of deferred foreign income			$ 85
U.S. Tax Reform Act - Provisional measurement period adjustment		30
GILTI maximum blended tax rate	13.125%
Income tax expense from GILTI expense allocations	$ 7	$ 16

INCOME TAXES - COMPONENTS OF _2

INCOME TAXES - COMPONENTS OF INCOME (LOSS) FROM CONTINUING OPERATIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Component of income (loss) from continuing operations before income taxes
U.S.	$ (106)	$ (38)	$ (143)
Non-U.S.	497	772	674
Income from continuing operations before income taxes	391	734	531
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Component of income (loss) from continuing operations before income taxes
U.S.	(120)	(56)	(150)
Non-U.S.	497	772	674
Income from continuing operations before income taxes	$ 377	$ 716	$ 524

INCOME TAXES - DEFERRED TAX ASS

INCOME TAXES - DEFERRED TAX ASSETS AND LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets:
Net operating loss carryforwards	$ 281	$ 359
Pension and other employee compensation	172	180
Property, plant and equipment	15	15
Intangible assets	56	76
Basis difference in Venator investment	199
Operating leases	98
Other, net	72	50
Total	893	680
Deferred income tax liabilities:
Property, plant and equipment	(218)	(199)
Pension and other employee compensation	(1)
Intangible assets	(27)	(33)
Unrealized currency loss	(43)	(37)
Operating leases	(102)
Other, net	(8)	(9)
Total	(399)	(278)
Net deferred tax asset before valuation allowance	494	402
Valuation allowance-net operating losses and other	(231)	(215)
Net deferred tax asset	263	187
Non-current deferred tax asset	292	324
Non-current deferred tax liability	(29)	(137)
Net deferred tax asset	263	187
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Deferred income tax assets:
Net operating loss carryforwards	281	359
Pension and other employee compensation	172	180
Property, plant and equipment	15	15
Intangible assets	56	76
Basis difference in Venator investment	199
Operating leases	98
Other, net	72	50
Total	893	680
Deferred income tax liabilities:
Property, plant and equipment	(218)	(199)
Pension and other employee compensation	(1)
Intangible assets	(27)	(33)
Unrealized currency loss	(43)	(37)
Operating leases	(102)
Other, net	(8)	(7)
Total	(399)	(276)
Net deferred tax asset before valuation allowance	494	404
Valuation allowance-net operating losses and other	(231)	(215)
Net deferred tax asset	263	189
Non-current deferred tax asset	292	324
Non-current deferred tax liability	$ (29)	$ (135)

INCOME TAXES - TAX CREDITS AND

INCOME TAXES - TAX CREDITS AND OPERATING LOSS CARRYFORWARDS (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019
Income Tax
Deferred Tax Assets, Operating Loss Carryforwards			$ 359		$ 281
Releases of valuation allowances			$ 132	$ 22
Basis difference in Venator investment					199
Luxembourg
Income Tax
Operating loss carryforwards					581
Operating loss carryforwards, valuation allowance					92
Deferred Tax Assets, Operating Loss Carryforwards					145
Releases of valuation allowances	$ 24			15
Italy
Income Tax
Releases of valuation allowances				$ 7
Switzerland
Income Tax
Releases of valuation allowances		$ 80
Carryover period			7 years
UK
Income Tax
Releases of valuation allowances		$ 15
Non-US jurisdictions
Income Tax
Operating loss carryforwards					1,185
Operating loss carryforwards, subject to expiration					175
Portion of operating loss carryforwards that are subject to expiration, subject to valuation allowance					162
Releases of valuation allowances			$ 13
Non-US jurisdictions | Expiration in 2018
Income Tax
Portion of operating loss carryforwards that are subject to expiration, subject to valuation allowance			$ 91
Non-US jurisdictions | Expiration in 2019
Income Tax
Portion of operating loss carryforwards that are subject to expiration, subject to valuation allowance					111
Non-US jurisdictions | Expiration in 2020
Income Tax
Operating loss carryforwards, subject to expiration					88
Portion of operating loss carryforwards that are subject to expiration, subject to valuation allowance					87
Venator Materials PLC
Income Tax
Tax benefit related to realized portion of deferred tax asset attributable to basis difference in investment					153
Basis difference in Venator investment					199
Valuation allowance					46
Deferred tax asset, carryforward					18
Venator Materials PLC | Australia
Income Tax
Operating loss carryforwards, valuation allowance					$ 11

INCOME TAXES - SUMMARY OF CHANG

INCOME TAXES - SUMMARY OF CHANGES IN VALUATION ALLOWANCE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of changes in the valuation allowance
Valuation allowance at the beginning of the period	$ 215	$ 412	$ 484
Valuation allowance at the end of the period	231	215	412
Change in valuation allowance	(16)	197	72
Foreign currency movements		3	11
(Decrease) increase to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances	(40)	(15)	(11)
Change in valuation allowance per rate reconciliation	(56)	185	72
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	(133)	53	50
Releases of valuation allowances in various jurisdictions		132	22
Establishments of valuation allowances in various jurisdictions	77
Change in valuation allowance per rate reconciliation	(56)	185	72
Expense (benefit) as a result of pre-tax income and losses in jurisdictions with valuation allowances	0	0	0
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Summary of changes in the valuation allowance
Valuation allowance at the beginning of the period	215	412	487
Valuation allowance at the end of the period	231	215	412
Change in valuation allowance	(16)	197	75
Foreign currency movements		3	11
(Decrease) increase to deferred tax assets with no impact on operating tax expense, including an offsetting (decrease) increase to valuation allowances	(40)	(15)	(14)
Change in valuation allowance per rate reconciliation	(56)	185	72
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	(133)	53	49
Releases of valuation allowances in various jurisdictions		132	23
Establishments of valuation allowances in various jurisdictions	77
Change in valuation allowance per rate reconciliation	(56)	185	72
Expense (benefit) as a result of pre-tax income and losses in jurisdictions with valuation allowances	$ 0	$ 0	$ 0

INCOME TAXES - UNRECOGNIZED TAX

INCOME TAXES - UNRECOGNIZED TAX BENEFITS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of unrecognized tax benefits
Unrecognized tax benefits, balance at the beginning of the period	$ 26	$ 23
Gross increases and decreases-tax positions taken during the prior period	4	1
Gross increases and decreases-tax positions taken during the current period	1	3
Reductions resulting from the lapse of statutes of limitation	(4)
Foreign currency movements	1	(1)
Unrecognized tax benefits, balance at the end of the period	28	26	$ 23
Unrecognized tax benefits which, if recognized, would affect the effective tax rate	15	23
Increase (decrease) in unrecognized tax benefit	(10)	5	$ 9
Interest and penalties related to unrecognized tax benefits included in tax expense
Interest expense included in tax expense	2
Penalties expense included in tax expense	2
Interest and penalties accrued related to unrecognized tax benefits
Accrued liability for interest	5	$ 3
Accrued liability for penalties	$ 2
Number of months from the reporting date during which unrecognized tax benefit would result in change in income tax	12 months
Minimum
Interest and penalties accrued related to unrecognized tax benefits
Decrease in the unrecognized tax benefits reasonably possible, low end of range	$ 12
Maximum
Interest and penalties accrued related to unrecognized tax benefits
Decrease in the unrecognized tax benefits reasonably possible, low end of range	$ 14

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - PURCHASE COMMITMENTS AND OPERATING LEASES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
COMMITMENTS AND CONTINGENCIES
Minimum contracts period which require minimum volume purchases	1 year
Minimum payments under purchase commitments	$ 1	$ 0	$ 0
Purchase commitments:
2020	1,364
2021	905
2022	751
2023	424
2024	416
Thereafter	1,894
Total	$ 5,754
Operating Leases
Lease expense		$ 55	$ 60

ENVIRONMENTAL, HEALTH AND SAF_2

ENVIRONMENTAL, HEALTH AND SAFETY MATTERS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)item	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
ENVIRONMENTAL, HEALTH AND SAFETY MATTERS
Capital expenditures for EHS matters	$ 42	$ 32	$ 32
Accrued environmental liabilities	4	5
Environmental liabilities, classified as accrued liabilities	1	2
Environmental liabilities, classified as other noncurrent liabilities	$ 3	$ 3
Maximum period for payment of remediation liabilities	30 years
Number of former facilities or third-party sites with potential claims against the entity for cleanup liabilities | item	6

HUNTSMAN CORPORATION STOCKHOL_3

HUNTSMAN CORPORATION STOCKHOLDERS EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended								12 Months Ended
	Jan. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 03, 2018
SHARE REPURCHASE PROGRAM
Number of shares repurchased	336,478									10,099,892
Value of repurchase of common stock, excluding commission	$ 7									$ 208	$ 277
DIVIDENDS ON COMMON STOCK
Cash dividends paid		$ 35	$ 38	$ 38	$ 39	$ 39	$ 39	$ 39	$ 39	$ 150	$ 156	$ 120
Cash dividends paid (in dollars per share)		$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1625
Share Repurchase Program 2015
SHARE REPURCHASE PROGRAM
Remaining amount authorized for repurchase													$ 50
Share Repurchase Program 2018 | Maximum
SHARE REPURCHASE PROGRAM
Value authorized to be repurchased													$ 950

STOCK-BASED COMPENSATION PLAN_2

STOCK-BASED COMPENSATION PLANS - COMPENSATION COST AND STOCK OPTIONS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 05, 2016
STOCK-BASED COMPENSATION PLANS
Compensation cost	$ 29	$ 27	$ 36
Total income tax benefit recognized in the statements of operations for stock-based compensation arrangements	$ 8	$ 18	$ 18
2016 Stock Incentive Plan
STOCK-BASED COMPENSATION PLANS
Authorized number of shares to be granted under the Stock Incentive Plan				8,200
Shares available for grant	8,000
the "Prior Plan"
STOCK-BASED COMPENSATION PLANS
Shares available for grant				0
Stock options
Weighted average of the assumptions utilized for stock options granted
Dividend yield (as a percent)	2.90%	1.60%	2.40%
Expected volatility (as a percent)	54.00%	55.20%	56.90%
Risk-free interest rate (as a percent)	2.50%	2.60%	2.00%
Expected life of stock options granted during the period	5 years 10 months 24 days	5 years 10 months 24 days	5 years 10 months 24 days
Shares
Outstanding at the beginning of the period (in shares)	4,545
Granted (in shares)	896
Exercised (in shares)	(366)
Forfeited (in shares)	(50)
Outstanding at the end of the period (in shares)	5,025	4,545
Exercisable at the end of the period (in shares)	3,600
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 17.81
Granted (in dollars per share)	22.66
Exercised (in dollars per share)	11.19
Forfeited (in dollars per share)	25.59
Outstanding at the end of the period (in dollars per share)	19.08	$ 17.81
Exercisable at the end of the period (in dollars per share)	$ 16.90
Outstanding, Weighted Average Remaining Contractual Term (years)	6 years 2 months 12 days
Exercisable, Weighted Average Remaining Contractual Term (years)	5 years 3 months 18 days
Outstanding, Aggregate Intrinsic Value (in dollars)	$ 30
Exercisable, Aggregate Intrinsic Value (in dollars)	$ 27
Weighted-average grant-date fair value of stock options granted (in dollars per share)	$ 9.27	$ 15.20	$ 9.26
Total unrecognized compensation cost	$ 8
Weighted-average period over which cost is expected to be recognized (years)	1 year 9 months 18 days
Total intrinsic value of stock options exercised	$ 4	$ 78	$ 48
Cash received from stock options exercised	2	17	35
Cash tax benefit from stock options exercised	$ 1	17	15
Stock options | Maximum
STOCK-BASED COMPENSATION PLANS
Contractual term	10 years
Outstanding stock-based awards
STOCK-BASED COMPENSATION PLANS
Vesting period	3 years
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
STOCK-BASED COMPENSATION PLANS
Compensation cost	$ 28	$ 26	$ 35

STOCK-BASED COMPENSATION PLAN_3

STOCK-BASED COMPENSATION PLANS - NONVESTED SHARES (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Nonvested shares
Additional information
Total unrecognized compensation cost	$ 22
Weighted-average period over which cost is expected to be recognized (years)	1 year 9 months 18 days
Value of share awards vested	$ 24	$ 24	$ 22
Performance Awards
STOCK-BASED COMPENSATION PLANS
Weighted-average expected volatility rate	34.60%	44.30%	45.00%
Weighted-average risk-free interest rate (as a percent)	2.50%	2.30%	1.50%
Additional information
Performance period	3 years
Number of target shares awarded for grant	412,246
Number of shares vested above target	357,006
Grant date fair value of shares vested above target	$ 10.22
Equity Awards
Shares
Nonvested at the beginning of the period (in shares)	1,923,000
Granted (in shares)	709,000
Vested (in shares)	(974,000)
Forfeited (in shares)	(18,000)
Nonvested at the end of the period (in shares)	1,640,000	1,923,000
Weighted Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 19.08
Granted (in dollars per share)	24.60
Vested (in dollars per share)	13.65
Forfeited (in dollars per share)	26.29
Nonvested at the end of the period (in dollars per share)	$ 24.61	$ 19.08
Liability Awards
Shares
Nonvested at the beginning of the period (in shares)	504,000
Granted (in shares)	256,000
Vested (in shares)	(313,000)
Forfeited (in shares)	(20,000)
Nonvested at the end of the period (in shares)	427,000	504,000
Weighted Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 20.66
Granted (in dollars per share)	22.64
Vested (in dollars per share)	16.32
Forfeited (in dollars per share)	25.33
Nonvested at the end of the period (in dollars per share)	$ 24.80	$ 20.66
Restricted stock units
Shares
Vested (in shares)	(30,486)
Additional information
Units vested but not yet issued	389,095

OTHER COMPREHENSIVE (LOSS) IN_3

OTHER COMPREHENSIVE (LOSS) INCOME - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN CORPORATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of other comprehensive income
Balance at the beginning of the period	$ 2,749	$ 3,371	$ 1,467
Balance at the end of the period	2,824	2,749	3,371
Total
Components of other comprehensive income
Balance at the beginning of the period	(1,352)	(1,411)
Cumulative effect of changes in fair value of equity investments			(10)
Revised beginning balance			1,421
Other comprehensive (loss) income before reclassifications, gross	(113)	(316)
Tax benefit (expense)	27	18
Amounts reclassified from accumulated other comprehensive loss, gross	62	77
Tax benefit (expense)	(12)	(19)
Net current-period other comprehensive (loss) income	(36)	(240)
Deconsolidation of Venator		360
Tax expense		(51)
Balance at the end of the period	(1,388)	(1,352)	(1,411)
Foreign currency translation adjustment
Components of other comprehensive income
Balance at the beginning of the period	(371)	(249)
Revised beginning balance			249
Other comprehensive (loss) income before reclassifications, gross		(186)
Tax benefit (expense)	2	(6)
Net current-period other comprehensive (loss) income	2	(192)
Deconsolidation of Venator		70
Balance at the end of the period	(369)	(371)	(249)
Foreign currency translation adjustment, tax	68	71	65
Pension and other postretirement benefits adjustments
Components of other comprehensive income
Balance at the beginning of the period	(994)	(1,189)
Revised beginning balance			1,189
Other comprehensive (loss) income before reclassifications, gross	(112)	(130)
Tax benefit (expense)	25	27
Amounts reclassified from accumulated other comprehensive loss, gross	62	77	80
Tax benefit (expense)	(12)	(13)	(14)
Net current-period other comprehensive (loss) income	(37)	(39)
Deconsolidation of Venator		285
Tax expense		(51)
Balance at the end of the period	(1,031)	(994)	(1,189)
Pension and other postretirement benefits adjustments, tax	148	135	172
Other comprehensive income of unconsolidated affiliates
Components of other comprehensive income
Balance at the beginning of the period	8	3
Revised beginning balance			(3)
Deconsolidation of Venator		5
Balance at the end of the period	8	8	3
Other, net
Components of other comprehensive income
Balance at the beginning of the period	5	24
Cumulative effect of changes in fair value of equity investments			(10)
Revised beginning balance			(14)
Other comprehensive (loss) income before reclassifications, gross	(1)
Tax benefit (expense)		(3)
Tax benefit (expense)		(6)
Net current-period other comprehensive (loss) income	(1)	(9)
Balance at the end of the period	4	5	24
Amounts attributable to noncontrolling interests
Components of other comprehensive income
Balance at the beginning of the period	36	143
Revised beginning balance			(143)
Other comprehensive (loss) income before reclassifications, gross	5	47
Net current-period other comprehensive (loss) income	5	47
Acquisition of noncontrolling interests, net of tax	(15)
Disposition of a portion of Venator		(5)
Deconsolidation of Venator		(149)
Balance at the end of the period	26	36	143
Accumulated other comprehensive loss
Components of other comprehensive income
Balance at the beginning of the period	(1,316)	(1,268)	(1,671)
Cumulative effect of changes in fair value of equity investments			(10)
Revised beginning balance			1,278
Other comprehensive (loss) income before reclassifications, gross	(108)	(269)
Tax benefit (expense)	27	18
Amounts reclassified from accumulated other comprehensive loss, gross	62	77
Tax benefit (expense)	(12)	(19)
Net current-period other comprehensive (loss) income	(31)	(193)
Acquisition of noncontrolling interests, net of tax	(15)
Disposition of a portion of Venator		(5)
Deconsolidation of Venator		211
Tax expense		(51)
Balance at the end of the period	$ (1,362)	$ (1,316)	$ (1,268)

OTHER COMPREHENSIVE (LOSS) IN_4

OTHER COMPREHENSIVE (LOSS) INCOME - RECLASSIFICATION DETAILS - HUNTSMAN CORPORATION (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension and other postretirement benefits adjustments
Reclassification from accumulated other comprehensive loss
Total before tax	$ 62	$ 77	$ 80
Income tax benefit (expense)	(12)	(13)	(14)
Net of tax	50	64	66
Pension and other postretirement benefits adjustments | Discontinued Operations
Reclassification from accumulated other comprehensive loss
Total before tax	7	22	22
Prior service credit
Reclassification from accumulated other comprehensive loss
Total before tax	(11)	(12)	(15)
Settlement loss
Reclassification from accumulated other comprehensive loss
Total before tax	1	2
Actuarial loss | Discontinued Operations
Reclassification from accumulated other comprehensive loss
Total before tax	$ 72	$ 87	$ 95

OTHER COMPREHENSIVE (LOSS) IN_5

OTHER COMPREHENSIVE (LOSS) INCOME - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN INTERNATIONAL (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	$ 2,488	$ 2,834	$ 936
Balance at the end of the period	2,772	2,488	2,834
Total
Components of other comprehensive income
Cumulative effect of changes in fair value of equity investments			(10)
Other comprehensive (loss) income before reclassifications, gross	(113)	(316)
Tax benefit	27	18
Amounts reclassified from accumulated other comprehensive loss, gross	62	77
Tax benefit (expense)	(12)	(19)
Net current-period other comprehensive (loss) income	(36)	(240)
Deconsolidation of Venator		360
Total | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	(1,344)	(1,406)
Cumulative effect of changes in fair value of equity investments			(10)
Revised beginning balance			(1,416)
Other comprehensive (loss) income before reclassifications, gross	(114)	(318)
Tax benefit	27	20
Amounts reclassified from accumulated other comprehensive loss, gross	65	80
Tax benefit (expense)	(12)	(19)
Net current-period other comprehensive (loss) income	(34)	(237)
Deconsolidation of Venator		360
Tax expense		(51)
Balance at the end of the period	(1,378)	(1,344)	(1,406)
Foreign currency translation adjustment
Components of other comprehensive income
Other comprehensive (loss) income before reclassifications, gross		(186)
Tax benefit	2	(6)
Net current-period other comprehensive (loss) income	2	(192)
Deconsolidation of Venator		70
Foreign currency translation adjustment, tax	68	71	65
Foreign currency translation adjustment | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	(376)	(252)
Revised beginning balance			(252)
Other comprehensive (loss) income before reclassifications, gross		(188)
Tax benefit	2	(6)
Net current-period other comprehensive (loss) income	2	(194)
Deconsolidation of Venator		70
Balance at the end of the period	(374)	(376)	(252)
Foreign currency translation adjustment, tax	55	57	51
Pension and other postretirement benefits adjustments
Components of other comprehensive income
Other comprehensive (loss) income before reclassifications, gross	(112)	(130)
Tax benefit	25	27
Amounts reclassified from accumulated other comprehensive loss, gross	62	77	80
Tax benefit (expense)	(12)	(13)	(14)
Net current-period other comprehensive (loss) income	(37)	(39)
Deconsolidation of Venator		285
Pension and other postretirement benefits adjustments, tax	148	135	172
Pension and other postretirement benefits adjustments | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	(977)	(1,174)
Revised beginning balance			(1,174)
Other comprehensive (loss) income before reclassifications, gross	(113)	(130)
Tax benefit	25	27
Amounts reclassified from accumulated other comprehensive loss, gross	65	80	86
Tax benefit (expense)	(12)	(14)	(15)
Net current-period other comprehensive (loss) income	(35)	(37)
Deconsolidation of Venator		285
Tax expense		(51)
Balance at the end of the period	(1,012)	(977)	(1,174)
Pension and other postretirement benefits adjustments, tax	174	161	199
Other comprehensive income of unconsolidated affiliates
Components of other comprehensive income
Deconsolidation of Venator		5
Other comprehensive income of unconsolidated affiliates | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	8	3
Revised beginning balance			3
Deconsolidation of Venator		5
Balance at the end of the period	8	8	3
Other, net
Components of other comprehensive income
Cumulative effect of changes in fair value of equity investments			(10)
Other comprehensive (loss) income before reclassifications, gross	(1)
Tax benefit		(3)
Tax benefit (expense)		(6)
Net current-period other comprehensive (loss) income	(1)	(9)
Other, net | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	1	17
Cumulative effect of changes in fair value of equity investments			(10)
Revised beginning balance			7
Other comprehensive (loss) income before reclassifications, gross	(1)
Tax benefit		(1)
Tax benefit (expense)		(5)
Net current-period other comprehensive (loss) income	(1)	(6)
Balance at the end of the period		1	17
Amounts attributable to noncontrolling interests
Components of other comprehensive income
Other comprehensive (loss) income before reclassifications, gross	5	47
Net current-period other comprehensive (loss) income	5	47
Acquisition of noncontrolling interests, net of tax	(15)
Disposition of a portion of Venator		(5)
Deconsolidation of Venator		(149)
Amounts attributable to noncontrolling interests | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	36	143
Revised beginning balance			143
Other comprehensive (loss) income before reclassifications, gross	5	47
Net current-period other comprehensive (loss) income	5	47
Disposition of a portion of Venator		(5)
Deconsolidation of Venator		(149)
Balance at the end of the period	26	36	143
Accumulated other comprehensive loss
Components of other comprehensive income
Cumulative effect of changes in fair value of equity investments			(10)
Other comprehensive (loss) income before reclassifications, gross	(108)	(269)
Tax benefit	27	18
Amounts reclassified from accumulated other comprehensive loss, gross	62	77
Tax benefit (expense)	(12)	(19)
Net current-period other comprehensive (loss) income	(31)	(193)
Acquisition of noncontrolling interests, net of tax	(15)
Disposition of a portion of Venator		(5)
Deconsolidation of Venator		211
Accumulated other comprehensive loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Components of other comprehensive income
Balance at the beginning of the period	(1,308)	(1,263)	(1,691)
Cumulative effect of changes in fair value of equity investments			(10)
Revised beginning balance			(1,273)
Other comprehensive (loss) income before reclassifications, gross	(109)	(271)
Tax benefit	27	20
Amounts reclassified from accumulated other comprehensive loss, gross	65	80
Tax benefit (expense)	(12)	(19)
Net current-period other comprehensive (loss) income	(29)	(190)
Disposition of a portion of Venator		(5)
Deconsolidation of Venator		211
Tax expense		(51)
Balance at the end of the period	$ (1,352)	$ (1,308)	$ (1,263)

OTHER COMPREHENSIVE (LOSS) IN_6

OTHER COMPREHENSIVE (LOSS) INCOME - RECLASSIFICATION DETAILS - HUNTSMAN INTERNATIONAL (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension and other postretirement benefits adjustments
Reclassification from accumulated other comprehensive loss
Total before tax	$ 62	$ 77	$ 80
Income tax benefit (expense)	(12)	(13)	(14)
Net of tax	50	64	66
Pension and other postretirement benefits adjustments | Discontinued Operations
Reclassification from accumulated other comprehensive loss
Total before tax	7	22	22
Pension and other postretirement benefits adjustments | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Reclassification from accumulated other comprehensive loss
Total before tax	65	80	86
Income tax benefit (expense)	(12)	(14)	(15)
Net of tax	53	66	71
Pension and other postretirement benefits adjustments | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Discontinued Operations
Reclassification from accumulated other comprehensive loss
Total before tax	7	22	29
Prior service credit
Reclassification from accumulated other comprehensive loss
Total before tax	(11)	(12)	(15)
Prior service credit | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Reclassification from accumulated other comprehensive loss
Total before tax	(11)	(12)	(15)
Settlement loss
Reclassification from accumulated other comprehensive loss
Total before tax	1	2
Settlement loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Reclassification from accumulated other comprehensive loss
Total before tax	1	2
Actuarial loss | Discontinued Operations
Reclassification from accumulated other comprehensive loss
Total before tax	72	87	95
Actuarial loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Reclassification from accumulated other comprehensive loss
Total before tax	$ 75	$ 90	$ 101

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details) - Unconsolidated affiliates - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
RELATED PARTY TRANSACTIONS
Sales to unconsolidated affiliates	$ 133	$ 153	$ 161
Inventory purchases from unconsolidated affiliates	$ 434	$ 411	$ 291

OPERATING SEGMENT INFORMATION -

OPERATING SEGMENT INFORMATION - FINANCIAL INFORMATION BY SEGMENT (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2019USD ($)segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
OPERATING SEGMENT INFORMATION
Number of reportable segments | segment									4
Total revenues	$ 1,657	$ 1,687	$ 1,784	$ 1,669	$ 1,821	$ 1,968	$ 1,977	$ 1,838	$ 6,797	$ 7,604	$ 6,845
Segment adjusted EBITDA									846	1,161	1,040
Reconciliation of adjusted EBITDA to net income:
Interest expense - continuing operations									(111)	(115)	(165)
Interest expense - discontinued operations										(36)	(19)
Income tax benefit (expense)-continuing operations									38	(45)	(20)
Income tax expense-discontinued operations									(35)	(86)	(111)
Depreciation and amortization - continuing operations									(270)	(255)	(236)
Depreciation and amortization - discontinued operations									(61)	(88)	(151)
Net income attributable to noncontrolling interests									36	313	105
Other adjustments:
Business acquisition and integration expenses and purchase accounting inventory adjustments									(5)	(9)	(19)
Merger costs										(2)	(28)
EBITDA from discontinued operations									265	171	511
Noncontrolling interest of discontinued operations										(232)	(49)
Fair value adjustments to Venator investment									(18)	(62)
Loss on early extinguishment of debt									(23)	(3)	(54)
Certain legal settlements and related (expenses) income									(6)	(1)	11
(Loss) gain on sale of businesses/assets									(21)		9
Certain nonrecurring information technology project implementation costs									(4)
Amortization of pension and postretirement actuarial losses									(66)	(67)	(69)
Plant incident remediation costs									(8)		(1)
U.S. Tax Reform Act impact on noncontrolling interest											6
Restructuring, impairment and plant closing and transition credits (costs)									41	6	(19)
Net income	308	41	118	131	(315)	(8)	623	350	598	650	741
Operating segments | Polyurethanes
OPERATING SEGMENT INFORMATION
Total revenues									3,911	4,282	3,764
Segment adjusted EBITDA									548	809	776
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(120)	(108)	(92)
Operating segments | Performance Products
OPERATING SEGMENT INFORMATION
Total revenues									1,158	1,301	1,156
Segment adjusted EBITDA									168	197	155
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(81)	(78)	(78)
Operating segments | Advanced Materials
OPERATING SEGMENT INFORMATION
Total revenues									1,044	1,116	1,040
Segment adjusted EBITDA									201	225	219
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(36)	(37)	(33)
Operating segments | Textile Effects
OPERATING SEGMENT INFORMATION
Total revenues									763	824	776
Segment adjusted EBITDA									84	101	83
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(16)	(16)	(14)
Corporate and eliminations
OPERATING SEGMENT INFORMATION
Total revenues									(79)	81	109
Corporate and other
OPERATING SEGMENT INFORMATION
Segment adjusted EBITDA									(155)	(171)	(193)
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(17)	(16)	(19)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
OPERATING SEGMENT INFORMATION
Total revenues	1,657	1,687	1,784	1,669	1,821	1,968	1,977	1,838	6,797	7,604	6,845
Segment adjusted EBITDA									851	1,165	1,044
Reconciliation of adjusted EBITDA to net income:
Interest expense - continuing operations									(126)	(136)	(181)
Interest expense - discontinued operations										(36)	(19)
Income tax benefit (expense)-continuing operations									41	(41)	(17)
Income tax expense-discontinued operations									(35)	(86)	(111)
Depreciation and amortization - continuing operations									(270)	(252)	(228)
Depreciation and amortization - discontinued operations									(61)	(88)	(151)
Net income attributable to noncontrolling interests									36	313	105
Other adjustments:
Business acquisition and integration expenses and purchase accounting inventory adjustments									(5)	(9)	(23)
Merger costs										(2)	(28)
EBITDA from discontinued operations									265	171	511
Noncontrolling interest of discontinued operations										(232)	(49)
Fair value adjustments to Venator investment									(18)	(62)
Loss on early extinguishment of debt									(23)	(3)	(54)
Certain legal settlements and related (expenses) income									(6)	(1)	11
(Loss) gain on sale of businesses/assets									(21)		10
Certain nonrecurring information technology project implementation costs									(4)
Amortization of pension and postretirement actuarial losses									(70)	(71)	(72)
Plant incident remediation costs									(8)		(1)
U.S. Tax Reform Act impact on noncontrolling interest											6
Restructuring, impairment and plant closing and transition credits (costs)									41	6	(19)
Net income	$ 311	$ 38	$ 115	$ 128	$ (320)	$ (11)	$ 620	$ 347	587	636	734
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Polyurethanes
OPERATING SEGMENT INFORMATION
Segment adjusted EBITDA									548	809	776
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(120)	(108)	(92)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Performance Products
OPERATING SEGMENT INFORMATION
Segment adjusted EBITDA									168	197	155
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(81)	(78)	(78)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Advanced Materials
OPERATING SEGMENT INFORMATION
Segment adjusted EBITDA									201	225	219
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(36)	(37)	(33)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Textile Effects
OPERATING SEGMENT INFORMATION
Segment adjusted EBITDA									84	101	83
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									(16)	(16)	(14)
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Corporate and other
OPERATING SEGMENT INFORMATION
Segment adjusted EBITDA									(150)	(167)	(189)
Reconciliation of adjusted EBITDA to net income:
Depreciation and amortization - continuing operations									$ (17)	$ (13)	$ (11)

OPERATING SEGMENT INFORMATION_2

OPERATING SEGMENT INFORMATION - CAPITAL EXPENDITURES AND ASSETS BY SEGMENT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING SEGMENT INFORMATION
Capital Expenditures	$ 274	$ 251	$ 234
Total Assets	7,112	6,844
Goodwill	276	275
Operating segments | Polyurethanes
OPERATING SEGMENT INFORMATION
Capital Expenditures	185	153	158
Total Assets	3,437	3,129
Goodwill	177	173
Operating segments | Performance Products
OPERATING SEGMENT INFORMATION
Capital Expenditures	32	48	35
Total Assets	1,125	1,161
Goodwill	16	16
Operating segments | Advanced Materials
OPERATING SEGMENT INFORMATION
Capital Expenditures	24	20	21
Total Assets	774	796
Goodwill	83	86
Operating segments | Textile Effects
OPERATING SEGMENT INFORMATION
Capital Expenditures	22	20	16
Total Assets	511	571
Corporate and other
OPERATING SEGMENT INFORMATION
Capital Expenditures	11	10	4
Total Assets	1,265	1,187
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
OPERATING SEGMENT INFORMATION
Capital Expenditures	274	251	234
Total Assets	7,515	7,226
Goodwill	276	275
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Polyurethanes
OPERATING SEGMENT INFORMATION
Capital Expenditures	185	153	158
Total Assets	3,437	3,129
Goodwill	177	173
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Performance Products
OPERATING SEGMENT INFORMATION
Capital Expenditures	32	48	35
Total Assets	1,125	1,161
Goodwill	16	16
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Advanced Materials
OPERATING SEGMENT INFORMATION
Capital Expenditures	24	20	21
Total Assets	774	796
Goodwill	83	86
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Operating segments | Textile Effects
OPERATING SEGMENT INFORMATION
Capital Expenditures	22	20	16
Total Assets	511	571
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES | Corporate and other
OPERATING SEGMENT INFORMATION
Capital Expenditures	11	10	$ 4
Total Assets	$ 1,668	$ 1,569

OPERATING SEGMENT INFORMATION_3

OPERATING SEGMENT INFORMATION - REVENUES AND LONG-LIVED ASSETS BY GEOGRAPHICAL AREA (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues and long-lived assets
Revenues	$ 1,657	$ 1,687	$ 1,784	$ 1,669	$ 1,821	$ 1,968	$ 1,977	$ 1,838	$ 6,797	$ 7,604	$ 6,845
Long-lived assets	2,383				2,353				2,383	2,353
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Revenues and long-lived assets
Revenues	1,657	$ 1,687	$ 1,784	$ 1,669	1,821	$ 1,968	$ 1,977	$ 1,838	6,797	7,604	6,845
Long-lived assets	2,383				2,353				2,383	2,353
United States
Revenues and long-lived assets
Revenues									2,025	2,136	1,828
Long-lived assets	970				944				970	944
Netherlands
Revenues and long-lived assets
Long-lived assets	334				331				334	331
China
Revenues and long-lived assets
Revenues									1,076	1,260	1,122
Long-lived assets	247				247				247	247
Saudi Arabia
Revenues and long-lived assets
Long-lived assets	154				161				154	161
Germany
Revenues and long-lived assets
Revenues									541	537	507
Long-lived assets	137				143				137	143
India
Revenues and long-lived assets
Revenues									319	352	336
Switzerland
Revenues and long-lived assets
Long-lived assets	106				108				106	108
Singapore
Revenues and long-lived assets
Long-lived assets	94				96				94	96
Other nations
Revenues and long-lived assets
Revenues									2,836	3,319	$ 3,052
Long-lived assets	$ 341				$ 323				$ 341	$ 323

SELECTED UNAUDITED QUARTERLY _3

SELECTED UNAUDITED QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information
Revenues			$ 1,657	$ 1,687	$ 1,784	$ 1,669	$ 1,821	$ 1,968	$ 1,977	$ 1,838	$ 6,797	$ 7,604	$ 6,845
Gross profit			310	340	373	359	352	467	479	466	1,382	1,764	1,651
Restructuring, impairment and plant closing costs (credits)			1	(43)		1	(15)	5	1	2	(41)	(7)	19
Income (loss) from continuing operations			265	(27)	83	108	61	197	242	189	429	689	511
Net income (loss)			308	41	118	131	(315)	(8)	623	350	598	650	741
Net income attributable to noncontrolling interests			5	11	8	12	25	3	209	76	36	313	105
Net income (loss) attributable to Huntsman Corporation or Huntsman International			$ 303	$ 30	$ 110	$ 119	$ (340)	$ (11)	$ 414	$ 274	$ 562	$ 337	$ 636
Basic income per share
Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders			$ 1.16	$ (0.17)	$ 0.33	$ 0.41	$ 0.20	$ 0.72	$ 0.93	$ 0.70	$ 1.72	$ 2.55	$ 1.71
Net income attributable to Huntsman Corporation common stockholders (in dollars per share)			1.35	0.13	0.48	0.51	(1.45)	(0.05)	1.73	1.14	2.46	1.42	2.67
Diluted income per share
Income from continuing operations attributable to Huntsman Corporation common stockholders			1.15	(0.17)	0.32	0.41	0.19	0.72	0.91	0.68	1.70	2.52	1.66
Net income (loss) attributable to Huntsman Corporation common stockholders (in dollars per share)			$ 1.34	$ 0.13	$ 0.47	$ 0.51	$ (1.43)	$ (0.05)	$ 1.71	$ 1.11	$ 2.44	$ 1.39	$ 2.61
Venator Materials PLC
Diluted income per share
Loss on fair value adjustments to Venator investment	$ 57
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Quarterly Financial Information
Revenues			$ 1,657	$ 1,687	$ 1,784	$ 1,669	$ 1,821	$ 1,968	$ 1,977	$ 1,838	$ 6,797	$ 7,604	$ 6,845
Gross profit			310	340	373	359	352	468	480	467	1,382	1,767	1,657
Restructuring, impairment and plant closing costs (credits)			1	(43)		1	(15)	5	1	2	(41)	(7)	19
Income (loss) from continuing operations			268	(30)	80	105	56	194	239	186	418	675	507
Net income (loss)			311	38	115	128	(320)	(11)	620	347	587	636	734
Net income attributable to noncontrolling interests											36	313	105
Net income (loss) attributable to Huntsman Corporation or Huntsman International			$ 306	$ 27	$ 107	$ 116	(345)	(14)	$ 411	$ 271	$ 551	$ 323	$ 629
Discontinued Operations, Disposed of by Means Other than Sale | Venator Pigments and Additives Business
Diluted income per share
Pre-tax loss on discontinued operations							$ 427
Discontinued Operations, Held-for-sale | Venator Pigments and Additives Business
Diluted income per share
Valuation allowance								$ 270
Forward Swap | Venator Materials PLC
Diluted income per share
Loss on fair value adjustments to Venator investment		$ 5

Schedule I - Condensed Financ_2

Schedule I - Condensed Financial Information of Registrant (PARENT ONLY) - BALANCE SHEETS (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Prepaid assets	$ 83	$ 58
Receivable from affiliate	13	18
Total current assets	3,755	2,958
Investment in and advances to affiliates	535	526
Total assets	8,320	7,953
LIABILITIES AND STOCKHOLDERS' EQUITY
Payable to affiliate	57	32
Accrued liabilities	420	497
Total current liabilities	2,008	1,611
Other long-term liabilities	898	949
Total liabilities	5,496	5,204
STOCKHOLDERS' EQUITY
Common stock $0.01 par value, 1,200,000,000 shares authorized, 257,405,496 and 256,006,849 shares issued and 224,295,868 and 232,994,172 shares outstanding, respectively	3	3
Additional paid-in capital	4,008	3,984
Treasury stock, 33,112,572 and 23,012,680 shares, respectively	(635)	(427)
Unearned stock-based compensation	(17)	(16)
Retained earnings	690	292
Accumulated other comprehensive loss	(1,362)	(1,316)
Total Huntsman Corporation stockholders' equity	2,687	2,520
Total liabilities and equity	$ 8,320	$ 7,953
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	257,405,496	256,006,849
Common stock, shares outstanding	224,295,868	232,994,172
Treasury stock, shares	33,112,572	23,012,680
Reportable legal entities | Parent
ASSETS
Prepaid assets	$ 1	$ 1
Receivable from affiliate	86	72
Note receivable from affiliate	100	100
Total current assets	187	173
Note receivable from affiliate-long-term	280	488
Investment in and advances to affiliates	2,626	2,251
Total assets	3,093	2,912
LIABILITIES AND STOCKHOLDERS' EQUITY
Payable to affiliate	396	381
Accrued liabilities	3	3
Total current liabilities	399	384
Other long-term liabilities	7	8
Total liabilities	406	392
STOCKHOLDERS' EQUITY
Common stock $0.01 par value, 1,200,000,000 shares authorized, 257,405,496 and 256,006,849 shares issued and 224,295,868 and 232,994,172 shares outstanding, respectively	3	3
Additional paid-in capital	4,008	3,984
Treasury stock, 33,112,572 and 23,012,680 shares, respectively	(635)	(427)
Unearned stock-based compensation	(17)	(16)
Retained earnings	690	292
Accumulated other comprehensive loss	(1,362)	(1,316)
Total Huntsman Corporation stockholders' equity	2,687	2,520	$ 2,620	$ 1,287
Total liabilities and equity	$ 3,093	$ 2,912
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	257,405,496	256,006,849
Common stock, shares outstanding	224,295,868	232,994,172
Treasury stock, shares	33,112,572	23,012,680

Schedule I - Condensed Financ_3

Schedule I - Condensed Financial Information of Registrant (PARENT ONLY) - STATEMENTS OF OPERATIONS (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Selling, general and administrative expenses									$ (786)	$ (789)	$ (759)
Interest expense									(111)	(115)	(165)
Equity in income of subsidiaries									54	55	13
Other income, net									20	32	8
Net income attributable to Huntsman Corporation or Huntsman International LLC	$ 303	$ 30	$ 110	$ 119	$ (340)	$ (11)	$ 414	$ 274	562	337	636
Reportable legal entities | Parent
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Selling, general and administrative expenses									(5)	(4)	(4)
Interest expense									15	21	16
Equity in income of subsidiaries									401	163	501
Dividend income - affiliate									148	154	120
Other income, net									3	3	3
Net income attributable to Huntsman Corporation or Huntsman International LLC									$ 562	$ 337	$ 636

Schedule I - Condensed Financ_4

Schedule I - Condensed Financial Information of Registrant (PARENT ONLY) - STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Net income	$ 308	$ 41	$ 118	$ 131	$ (315)	$ (8)	$ 623	$ 350	$ 598	$ 650	$ 741
Other comprehensive (loss) income, net of tax:
Foreign currency translations adjustments									2	(192)	210
Pension and other postretirement benefits adjustments									(37)	(39)	86
Other, net									(1)	(9)
Other comprehensive (loss) income, net of tax									(36)	(240)	296
Comprehensive income									562	410	1,037
Comprehensive income attributable to noncontrolling interests									(31)	(266)	(127)
Comprehensive income (loss) attributable to Huntsman Corporation									531	144	910
Reportable legal entities | Parent
CONDENSED CONSOLIDATING FINANCIAL INFORMATION
Net income									562	337	636
Other comprehensive (loss) income, net of tax:
Foreign currency translations adjustments									2	(192)	210
Pension and other postretirement benefits adjustments									(37)	(39)	86
Other, net									35	304	105
Other comprehensive (loss) income, net of tax										73	401
Comprehensive income									562	410	1,037
Comprehensive income attributable to noncontrolling interests									(31)	(266)	(127)
Comprehensive income (loss) attributable to Huntsman Corporation									$ 531	$ 144	$ 910

Schedule I - Condensed Financ_5

Schedule I - Condensed Financial Information of Registrant (PARENT ONLY) - STATEMENTS OF STOCKHOLDERS' EQUITY (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended								12 Months Ended
	Jan. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity
Balance	$ 2,687				$ 2,520					$ 2,520
Balance (in shares)	224,295,868				232,994,172					232,994,172
Net income (loss) attributable to Huntsman Corporation		$ 303	$ 30	$ 110	$ 119	$ (340)	$ (11)	$ 414	$ 274	$ 562	$ 337	$ 636
Vesting of stock awards										7	11	8
Recognition of stock-based compensation										23	21	28
Repurchase and cancellation of stock awards										(12)	(30)	(12)
Stock options exercised										2	17	35
Treasury stock repurchased	$ (7)									$ (208)	(277)
Treasury stock repurchased (in shares)	(336,478)									(10,099,892)
Disposition of a portion of Venator											18	413
Costs of the IPO and secondary offering of Venator											(2)	(58)
Deconsolidation of Venator											(591)
Acquisition of noncontrolling interests, net of tax										$ (84)
Dividends declared to noncontrolling interests										65	69	34
Accrued and unpaid dividends											(1)
Dividends declared on common stock										(150)	(156)	$ (120)
Balance		$ 2,687				$ 2,520				$ 2,687	$ 2,520
Balance (in shares)		224,295,868				232,994,172				224,295,868	232,994,172
Common stock
Increase (Decrease) in Stockholders' Equity
Balance (in shares)	224,295,868				232,994,172				240,213,606	232,994,172	240,213,606	236,370,347
Vesting of stock awards (in shares)										1,643,368	1,135,003	1,316,975
Repurchase and cancellation of stock awards (in shares)										(488,441)	(259,643)	(402,978)
Stock options exercised (in shares)										246,661	2,310,663	2,929,262
Treasury stock repurchased (in shares)										(10,099,892)	(10,405,457)
Balance (in shares)		224,295,868				232,994,172				224,295,868	232,994,172	240,213,606
Additional paid-in capital
Increase (Decrease) in Stockholders' Equity
Issuance of nonvested stock awards										$ 17	$ 14	$ 18
Vesting of stock awards										7	11	8
Recognition of stock-based compensation										7	8	10
Stock options exercised										4	46	53
Disposition of a portion of Venator											18	413
Costs of the IPO and secondary offering of Venator											(2)	(58)
Acquisition of noncontrolling interests, net of tax										(11)
Treasury stock
Increase (Decrease) in Stockholders' Equity
Treasury stock repurchased										(208)	(277)
Unearned stock-based compensation
Increase (Decrease) in Stockholders' Equity
Issuance of nonvested stock awards										(17)	(14)	(18)
Recognition of stock-based compensation										16	13	18
(Accumulated deficit) retained earnings
Increase (Decrease) in Stockholders' Equity
Cumulative effect of changes in fair value of equity investments												10
Repurchase and cancellation of stock awards										(12)	(30)	(12)
Stock options exercised										(2)	(29)	(18)
Accrued and unpaid dividends											(1)
Dividends declared on common stock										(150)	(156)	(120)
Accumulated other comprehensive loss
Increase (Decrease) in Stockholders' Equity
Cumulative effect of changes in fair value of equity investments												(10)
Deconsolidation of Venator											160
Reportable legal entities | Parent
Increase (Decrease) in Stockholders' Equity
Balance	$ 2,687				$ 2,520				$ 2,620	$ 2,520	2,620	1,287
Balance (in shares)	224,295,868				232,994,172					232,994,172
Net income (loss) attributable to Huntsman Corporation										$ 562	337	636
Other comprehensive income (loss)										(46)	(198)	403
Vesting of stock awards										7	11	8
Recognition of stock-based compensation										23	21	28
Repurchase and cancellation of stock awards										(12)	(30)	(12)
Stock options exercised										2	17	35
Treasury stock repurchased										(208)	(277)
Disposition of a portion of Venator											18	413
Costs of the IPO and secondary offering of Venator											(2)	(58)
Deconsolidation of Venator											160
Acquisition of noncontrolling interests, net of tax										(11)
Accrued and unpaid dividends											(1)
Dividends declared on common stock										(150)	(156)	(120)
Balance		$ 2,687				$ 2,520				$ 2,687	$ 2,520	2,620
Balance (in shares)		224,295,868				232,994,172				224,295,868	232,994,172
Reportable legal entities | Common stock | Parent
Increase (Decrease) in Stockholders' Equity
Balance	$ 3				$ 3				$ 3	$ 3	$ 3	$ 3
Balance (in shares)	224,295,868				232,994,172				240,213,606	232,994,172	240,213,606	236,370,347
Vesting of stock awards (in shares)										1,643,368	1,135,003	1,316,975
Repurchase and cancellation of stock awards (in shares)										(488,441)	(259,643)	(402,978)
Stock options exercised (in shares)										246,661	2,310,663	2,929,262
Treasury stock repurchased (in shares)										(10,099,892)	(10,405,457)
Balance		$ 3				$ 3				$ 3	$ 3	$ 3
Balance (in shares)		224,295,868				232,994,172				224,295,868	232,994,172	240,213,606
Reportable legal entities | Additional paid-in capital | Parent
Increase (Decrease) in Stockholders' Equity
Balance	$ 4,008				$ 3,984				$ 3,889	$ 3,984	$ 3,889	$ 3,447
Issuance of nonvested stock awards										17	14	18
Vesting of stock awards										7	11	8
Recognition of stock-based compensation										7	8	10
Stock options exercised										4	46	53
Disposition of a portion of Venator											18	413
Costs of the IPO and secondary offering of Venator											(2)	(58)
Conversion of restricted awards to Venator awards												(2)
Acquisition of noncontrolling interests, net of tax										(11)
Balance		$ 4,008				$ 3,984				4,008	3,984	3,889
Reportable legal entities | Treasury stock | Parent
Increase (Decrease) in Stockholders' Equity
Balance	(635)				(427)				(150)	(427)	(150)	(150)
Treasury stock repurchased										(208)	(277)
Balance		(635)				(427)				(635)	(427)	(150)
Reportable legal entities | Unearned stock-based compensation | Parent
Increase (Decrease) in Stockholders' Equity
Balance	(17)				(16)				(15)	(16)	(15)	(17)
Issuance of nonvested stock awards										(17)	(14)	(18)
Recognition of stock-based compensation										16	13	18
Conversion of restricted awards to Venator awards												2
Balance		(17)				(16)				(17)	(16)	(15)
Reportable legal entities | (Accumulated deficit) retained earnings | Parent
Increase (Decrease) in Stockholders' Equity
Balance	690				292				161	292	161	(325)
Cumulative effect of changes in fair value of equity investments												10
Net income (loss) attributable to Huntsman Corporation										562	337	636
Repurchase and cancellation of stock awards										(12)	(30)	(12)
Stock options exercised										(2)	(29)	(18)
Accrued and unpaid dividends											(1)
Dividends declared on common stock										(150)	(156)	(120)
Balance		690				292				690	292	161
Reportable legal entities | Accumulated other comprehensive loss | Parent
Increase (Decrease) in Stockholders' Equity
Balance	$ (1,362)				$ (1,316)				$ (1,268)	(1,316)	(1,268)	(1,671)
Cumulative effect of changes in fair value of equity investments												(10)
Other comprehensive income (loss)										(46)	(198)	403
Deconsolidation of Venator											160
Balance		$ (1,362)				$ (1,316)				$ (1,362)	$ (1,316)	$ (1,268)

Schedule I - Condensed Financ_6

Schedule I - Condensed Financial Information of Registrant (PARENT ONLY) - STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities:
Net income	$ 308	$ 41	$ 118	$ 131	$ (315)	$ (8)	$ 623	$ 350	$ 598	$ 650	$ 741
Equity in income of subsidiaries									(54)	(55)	(13)
Stock-based compensation									29	27	36
Net cash provided by operating activities									897	1,207	1,219
Investing Activities:
Net cash used in investing activities									(260)	(973)	(424)
Financing Activities:
Dividends paid to common stockholders	(35)	$ (38)	$ (38)	(39)	(39)	$ (39)	$ (39)	(39)	(150)	(156)	(120)
Repurchase and cancellation of stock awards									(12)	(30)	(12)
Proceeds from issuance of common stock									2	17	35
Repurchase of common stock									(208)	(277)
Net cash used in financing activities									(450)	(424)	(519)
Increase in cash, cash equivalents and restricted cash									185	(225)	294
Cash, cash equivalents and restricted cash from continuing operations at beginning of period				340				481	340	481	396
Cash, cash equivalents and restricted cash from continuing operations at end of period					340					340	481
Reportable legal entities | Parent
Operating Activities:
Net income									562	337	636
Equity in income of subsidiaries									(401)	(163)	(501)
Stock-based compensation									1	1	1
Noncash interest income									(15)	(21)	(16)
Changes in operating assets and liabilities									13	19	10
Net cash provided by operating activities									160	173	130
Investing Activities:
Loan to affiliate											(47)
Repayments of loan by affiliate									207	255
Net cash used in investing activities									207	255	(47)
Financing Activities:
Dividends paid to common stockholders									(150)	(156)	(120)
Repurchase and cancellation of stock awards									(12)	(30)	(12)
Proceeds from issuance of common stock									2	17	35
Repurchase of common stock									(208)	(277)
Increase in payable to affiliates									1	16	15
Net cash used in financing activities									(367)	(430)	(82)
Increase in cash, cash equivalents and restricted cash										(2)	1
Cash, cash equivalents and restricted cash from continuing operations at beginning of period				$ 0				$ 2	0	2	1
Cash, cash equivalents and restricted cash from continuing operations at end of period	$ 0				$ 0				$ 0	$ 0	$ 2

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule II - Valuation and Qualifying Accounts
Balance at beginning of period	$ 21	$ 24	$ 23
Charges (credits) to cost and expenses	1	2	3
Charged to other accounts	(3)	(5)	(2)
Balance at end of period	19	21	24
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Schedule II - Valuation and Qualifying Accounts
Balance at beginning of period	21	24	23
Charges (credits) to cost and expenses	1	2	3
Charged to other accounts	(3)	(5)	(2)
Balance at end of period	$ 19	$ 21	$ 24