ACCUMULATED OTHER COMPREHENSIVE LOSS - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN INTERNATIONAL (Details) - USD ($) $ in Millions |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Acquisition of noncontrolling interests, net of tax |
Ìý
|
$ (79)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
$ 3,369
|
2,676
|
$ 2,772
|
$ 2,488
|
$ 2,488
|
Ìý
|
Acquisition of noncontrolling interests, net of tax |
Ìý
|
(79)
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the end of the period |
3,426
|
2,575
|
3,426
|
2,575
|
2,772
|
$ 2,488
|
Total |
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|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(34)
|
(20)
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
(2)
|
(1)
|
Ìý
|
Ìý
|
Amounts reclassified from accumulated other comprehensive loss, gross |
Ìý
|
Ìý
|
93
|
46
|
Ìý
|
Ìý
|
Tax expense |
Ìý
|
Ìý
|
(21)
|
(10)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
36
|
15
|
Ìý
|
Ìý
|
Total | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
Ìý
|
Ìý
|
(1,378)
|
(1,344)
|
(1,344)
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(34)
|
(21)
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
(2)
|
(1)
|
Ìý
|
Ìý
|
Amounts reclassified from accumulated other comprehensive loss, gross |
Ìý
|
Ìý
|
95
|
48
|
Ìý
|
Ìý
|
Tax expense |
Ìý
|
Ìý
|
(21)
|
(10)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
38
|
16
|
Ìý
|
Ìý
|
Balance at the end of the period |
(1,340)
|
(1,328)
|
(1,340)
|
(1,328)
|
(1,378)
|
(1,344)
|
Foreign currency translation adjustment |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(42)
|
(19)
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
Ìý
|
(1)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
(42)
|
(20)
|
Ìý
|
Ìý
|
Foreign currency translation adjustment, tax |
Ìý
|
Ìý
|
68
|
72
|
68
|
71
|
Foreign currency translation adjustment | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
Ìý
|
Ìý
|
(374)
|
(376)
|
(376)
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(42)
|
(20)
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
Ìý
|
(1)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
(42)
|
(21)
|
Ìý
|
Ìý
|
Balance at the end of the period |
(416)
|
(397)
|
(416)
|
(397)
|
(374)
|
(376)
|
Foreign currency translation adjustment, tax |
Ìý
|
Ìý
|
55
|
59
|
55
|
57
|
Pension and other postretirement benefits adjustments |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
8
|
Ìý
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
(2)
|
Ìý
|
Ìý
|
Ìý
|
Amounts reclassified from accumulated other comprehensive loss, gross |
18
|
15
|
93
|
46
|
Ìý
|
Ìý
|
Tax expense |
(4)
|
(4)
|
(21)
|
(10)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
78
|
36
|
Ìý
|
Ìý
|
Pension and other postretirement benefits adjustments, tax |
Ìý
|
Ìý
|
125
|
125
|
148
|
135
|
Pension and other postretirement benefits adjustments | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
Ìý
|
Ìý
|
(1,012)
|
(977)
|
(977)
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
8
|
Ìý
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
(2)
|
Ìý
|
Ìý
|
Ìý
|
Amounts reclassified from accumulated other comprehensive loss, gross |
19
|
15
|
95
|
48
|
Ìý
|
Ìý
|
Tax expense |
(4)
|
(3)
|
(21)
|
(10)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
80
|
38
|
Ìý
|
Ìý
|
Balance at the end of the period |
(932)
|
(939)
|
(932)
|
(939)
|
(1,012)
|
(977)
|
Pension and other postretirement benefits adjustments, tax |
Ìý
|
Ìý
|
150
|
151
|
174
|
161
|
Other comprehensive income of unconsolidated affiliates | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
Ìý
|
Ìý
|
8
|
8
|
8
|
Ìý
|
Balance at the end of the period |
8
|
8
|
8
|
8
|
8
|
8
|
Other, net |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
Ìý
|
(1)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
Ìý
|
(1)
|
Ìý
|
Ìý
|
Other, net | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
Ìý
|
Ìý
|
Ìý
|
1
|
1
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
Ìý
|
(1)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
Ìý
|
(1)
|
Ìý
|
Ìý
|
Balance at the end of the period |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
1
|
Amounts attributable to noncontrolling interests |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(3)
|
6
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
(3)
|
6
|
Ìý
|
Ìý
|
Acquisition of noncontrolling interests, net of tax |
Ìý
|
Ìý
|
Ìý
|
(15)
|
Ìý
|
Ìý
|
Amounts attributable to noncontrolling interests | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
Ìý
|
Ìý
|
26
|
36
|
36
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(3)
|
6
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
(3)
|
6
|
Ìý
|
Ìý
|
Acquisition of noncontrolling interests, net of tax |
Ìý
|
Ìý
|
Ìý
|
(15)
|
Ìý
|
Ìý
|
Balance at the end of the period |
23
|
27
|
23
|
27
|
26
|
36
|
Accumulated other comprehensive loss |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(37)
|
(14)
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
(2)
|
(1)
|
Ìý
|
Ìý
|
Amounts reclassified from accumulated other comprehensive loss, gross |
Ìý
|
Ìý
|
93
|
46
|
Ìý
|
Ìý
|
Tax expense |
Ìý
|
Ìý
|
(21)
|
(10)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
33
|
21
|
Ìý
|
Ìý
|
Acquisition of noncontrolling interests, net of tax |
Ìý
|
Ìý
|
Ìý
|
(15)
|
Ìý
|
Ìý
|
Accumulated other comprehensive loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Components of other comprehensive income |
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Ìý
|
Balance at the beginning of the period |
(1,343)
|
(1,262)
|
(1,352)
|
(1,308)
|
(1,308)
|
Ìý
|
Other comprehensive (loss) income before reclassifications, gross |
Ìý
|
Ìý
|
(37)
|
(15)
|
Ìý
|
Ìý
|
Tax benefit |
Ìý
|
Ìý
|
(2)
|
(1)
|
Ìý
|
Ìý
|
Amounts reclassified from accumulated other comprehensive loss, gross |
Ìý
|
Ìý
|
95
|
48
|
Ìý
|
Ìý
|
Tax expense |
Ìý
|
Ìý
|
(21)
|
(10)
|
Ìý
|
Ìý
|
Net current-period other comprehensive (loss) income |
Ìý
|
Ìý
|
35
|
22
|
Ìý
|
Ìý
|
Acquisition of noncontrolling interests, net of tax |
Ìý
|
Ìý
|
Ìý
|
(15)
|
Ìý
|
Ìý
|
Balance at the end of the period |
$ (1,317)
|
$ (1,301)
|
$ (1,317)
|
$ (1,301)
|
$ (1,352)
|
$ (1,308)
|