| Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
|
|
|
|
|
|
|
|
|
|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
|
|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
|
|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
Corporation |
|
| Beginning balance, January 1, 2025 |
|
$ |
(675 |
) |
|
$ |
(552 |
) |
|
$ |
— |
|
|
$ |
(1,227 |
) |
|
$ |
27 |
|
|
$ |
(1,200 |
) |
| Other comprehensive income (loss) before reclassifications, gross |
|
|
91 |
|
|
|
(12 |
) |
|
|
6 |
|
|
|
85 |
|
|
|
(1 |
) |
|
|
84 |
|
| Tax impact |
|
|
8 |
|
|
|
— |
|
|
|
— |
|
|
|
8 |
|
|
|
— |
|
|
|
8 |
|
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
— |
|
|
|
15 |
|
|
|
— |
|
|
|
15 |
|
|
|
— |
|
|
|
15 |
|
| Tax impact |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Net current-period other comprehensive income |
|
|
99 |
|
|
|
2 |
|
|
|
6 |
|
|
|
107 |
|
|
|
(1 |
) |
|
|
106 |
|
| Ending balance, September 30, 2025 |
|
$ |
(576 |
) |
|
$ |
(550 |
) |
|
$ |
6 |
|
|
$ |
(1,120 |
) |
|
$ |
26 |
|
|
$ |
(1,094 |
) |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
|
|
|
|
|
|
|
|
|
|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
|
|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
|
|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
Corporation |
|
| Beginning balance, January 1, 2024 |
|
$ |
(614 |
) |
|
$ |
(656 |
) |
|
$ |
(3 |
) |
|
$ |
(1,273 |
) |
|
$ |
28 |
|
|
$ |
(1,245 |
) |
| Other comprehensive (loss) income before reclassifications, gross |
|
|
(9 |
) |
|
|
2 |
|
|
|
4 |
|
|
|
(3 |
) |
|
|
(4 |
) |
|
|
(7 |
) |
| Tax impact |
|
|
1 |
|
|
|
— |
|
|
|
— |
|
|
|
1 |
|
|
|
— |
|
|
|
1 |
|
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
9 |
|
|
|
19 |
|
|
|
— |
|
|
|
28 |
|
|
|
— |
|
|
|
28 |
|
| Tax impact |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Net current-period other comprehensive income |
|
|
1 |
|
|
|
20 |
|
|
|
4 |
|
|
|
25 |
|
|
|
(4 |
) |
|
|
21 |
|
| Ending balance, September 30, 2024 |
|
$ |
(613 |
) |
|
$ |
(636 |
) |
|
$ |
1 |
|
|
$ |
(1,248 |
) |
|
$ |
24 |
|
|
$ |
(1,224 |
) |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
|
|
|
|
|
|
|
|
|
|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
|
|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
|
|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
International |
|
| Beginning balance, January 1, 2025 |
|
$ |
(680 |
) |
|
$ |
(528 |
) |
|
$ |
(4 |
) |
|
$ |
(1,212 |
) |
|
$ |
27 |
|
|
$ |
(1,185 |
) |
| Other comprehensive income (loss) before reclassifications, gross |
|
|
91 |
|
|
|
(12 |
) |
|
|
6 |
|
|
|
85 |
|
|
|
(1 |
) |
|
|
84 |
|
| Tax impact |
|
|
8 |
|
|
|
— |
|
|
|
— |
|
|
|
8 |
|
|
|
— |
|
|
|
8 |
|
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
— |
|
|
|
15 |
|
|
|
— |
|
|
|
15 |
|
|
|
— |
|
|
|
15 |
|
| Tax impact |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Net current-period other comprehensive income |
|
|
99 |
|
|
|
2 |
|
|
|
6 |
|
|
|
107 |
|
|
|
(1 |
) |
|
|
106 |
|
| Ending balance, September 30, 2025 |
|
$ |
(581 |
) |
|
$ |
(526 |
) |
|
$ |
2 |
|
|
$ |
(1,105 |
) |
|
$ |
26 |
|
|
$ |
(1,079 |
) |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
|
|
|
|
|
|
|
|
|
|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
|
|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
|
|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
International |
|
| Beginning balance, January 1, 2024 |
|
$ |
(619 |
) |
|
$ |
(632 |
) |
|
$ |
(7 |
) |
|
$ |
(1,258 |
) |
|
$ |
28 |
|
|
$ |
(1,230 |
) |
| Other comprehensive (loss) income before reclassifications, gross |
|
|
(9 |
) |
|
|
2 |
|
|
|
4 |
|
|
|
(3 |
) |
|
|
(4 |
) |
|
|
(7 |
) |
| Tax impact |
|
|
1 |
|
|
|
— |
|
|
|
— |
|
|
|
1 |
|
|
|
— |
|
|
|
1 |
|
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
9 |
|
|
|
19 |
|
|
|
— |
|
|
|
28 |
|
|
|
— |
|
|
|
28 |
|
| Tax impact |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Net current-period other comprehensive income |
|
|
1 |
|
|
|
20 |
|
|
|
4 |
|
|
|
25 |
|
|
|
(4 |
) |
|
|
21 |
|
| Ending balance, September 30, 2024 |
|
$ |
(618 |
) |
|
$ |
(612 |
) |
|
$ |
(3 |
) |
|
$ |
(1,233 |
) |
|
$ |
24 |
|
|
$ |
(1,209 |
) |
|
| Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
| |
|
Three months ended September 30, |
|
|
|
| |
|
2025 |
|
|
2024 |
|
|
|
| |
|
Amounts reclassified |
|
|
Amounts reclassified |
|
|
Affected line item in |
| |
|
from accumulated |
|
|
from accumulated |
|
|
the statement |
| Details about accumulated other |
|
other |
|
|
other |
|
|
where net income |
| comprehensive loss components(1)(2): |
|
comprehensive loss |
|
|
comprehensive loss |
|
|
is presented |
| Amortization of pension and other postretirement benefits: |
|
|
|
|
|
|
|
|
|
|
| Prior service credit |
|
$ |
(2 |
) |
|
$ |
(3 |
) |
(3) |
Other income, net |
| Actuarial loss |
|
|
7 |
|
|
|
9 |
|
(3) |
Other income, net |
| |
|
|
5 |
|
|
|
6 |
|
|
Total before tax |
| |
|
|
— |
|
|
|
— |
|
|
Income tax |
| Total reclassifications for the period |
|
$ |
5 |
|
|
$ |
6 |
|
|
Net of tax |
| |
|
Nine months ended September 30, |
|
|
|
| |
|
2025 |
|
|
2024 |
|
|
|
| |
|
Amounts reclassified |
|
|
Amounts reclassified |
|
|
Affected line item in |
| |
|
from accumulated |
|
|
from accumulated |
|
|
the statement |
| Details about accumulated other |
|
other |
|
|
other |
|
|
where net income |
| comprehensive loss components(1)(2): |
|
comprehensive loss |
|
|
comprehensive loss |
|
|
is presented |
| Amortization of pension and other postretirement benefits: |
|
|
|
|
|
|
|
|
|
|
| Prior service credit |
|
$ |
(6 |
) |
|
$ |
(6 |
) |
(3) |
Other income, net |
| Actuarial loss |
|
|
22 |
|
|
|
25 |
|
(3) |
Other income, net |
| Settlement gain |
|
|
(1 |
) |
|
|
— |
|
(3) |
Other income, net |
| |
|
|
15 |
|
|
|
19 |
|
|
Total before tax |
| |
|
|
(1 |
) |
|
|
(1 |
) |
|
Income tax |
| Total reclassifications for the period |
|
$ |
14 |
|
|
$ |
18 |
|
|
Net of tax |
| |
|
Three months ended September 30, |
|
|
|
| |
|
2025 |
|
|
2024 |
|
|
|
| |
|
Amounts reclassified |
|
|
Amounts reclassified |
|
|
Affected line item in |
| |
|
from accumulated |
|
|
from accumulated |
|
|
the statement |
| Details about accumulated other |
|
other |
|
|
other |
|
|
where net income |
| comprehensive loss components(1)(2): |
|
comprehensive loss |
|
|
comprehensive loss |
|
|
is presented |
| Amortization of pension and other postretirement benefits: |
|
|
|
|
|
|
|
|
|
|
| Prior service credit |
|
$ |
(2 |
) |
|
$ |
(3 |
) |
(3) |
Other income, net |
| Actuarial loss |
|
|
7 |
|
|
|
9 |
|
(3) |
Other income, net |
| |
|
|
5 |
|
|
|
6 |
|
|
Total before tax |
| |
|
|
— |
|
|
|
— |
|
|
Income tax |
| Total reclassifications for the period |
|
$ |
5 |
|
|
$ |
6 |
|
|
Net of tax |
| |
|
Nine months ended September 30, |
|
|
|
| |
|
2025 |
|
|
2024 |
|
|
|
| |
|
Amounts reclassified |
|
|
Amounts reclassified |
|
|
Affected line item in |
| |
|
from accumulated |
|
|
from accumulated |
|
|
the statement |
| Details about accumulated other |
|
other |
|
|
other |
|
|
where net income |
| comprehensive loss components(1)(2): |
|
comprehensive loss |
|
|
comprehensive loss |
|
|
is presented |
| Amortization of pension and other postretirement benefits: |
|
|
|
|
|
|
|
|
|
|
| Prior service credit |
|
$ |
(6 |
) |
|
$ |
(6 |
) |
(3) |
Other income, net |
| Actuarial loss |
|
|
22 |
|
|
|
25 |
|
(3) |
Other income, net |
| Settlement gain |
|
|
(1 |
) |
|
|
— |
|
(3) |
Other income, net |
| |
|
|
15 |
|
|
|
19 |
|
|
Total before tax |
| |
|
|
(1 |
) |
|
|
(1 |
) |
|
Income tax |
| Total reclassifications for the period |
|
$ |
14 |
|
|
$ |
18 |
|
|
Net of tax |
|