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