| Comprehensive Income (Loss) Note [Text Block] |
14. ACCUMULATED OTHER COMPREHENSIVE LOSS
The components of other comprehensive (loss) income and changes in accumulated other comprehensive loss by component were as follows (dollars in millions):
Huntsman Corporation
| | | | | | | 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, 2026 | | $ | (543 | ) | | $ | (490 | ) | | $ | 4 | | | $ | (1,029 | ) | | $ | 23 | | | $ | (1,006 | ) |
| Other comprehensive loss before reclassifications, gross | | | (12 | ) | | | — | | | | — | | | | (12 | ) | | | (2 | ) | | | (14 | ) |
| Tax impact | | | (1 | ) | | | — | | | | — | | | | (1 | ) | | | — | | | | (1 | ) |
| Amounts reclassified from accumulated other comprehensive loss, gross(3) | | | — | | | | 5 | | | | — | | | | 5 | | | | — | | | | 5 | |
| Tax impact | | | — | | | | (1 | ) | | | — | | | | (1 | ) | | | — | | | | (1 | ) |
| Net current-period other comprehensive (loss) income | | | (13 | ) | | | 4 | | | | — | | | | (9 | ) | | | (2 | ) | | | (11 | ) |
| Ending balance, March 31, 2026 | | $ | (556 | ) | | $ | (486 | ) | | $ | 4 | | | $ | (1,038 | ) | | $ | 21 | | | $ | (1,017 | ) |
| (1) | Amounts are net of tax of $52 million for both March 31, 2026 and January 1, 2026, respectively. |
| (2) | Amounts are net of tax of $49 million and $50 million as of March 31, 2026 and January 1, 2026, respectively. |
| (3) | See tables below for details about pension and other postretirement benefits reclassifications. |
| | | | | | | 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 | | | 32 | | | | (12 | ) | | | 6 | | | | 26 | | | | — | | | | 26 | |
| Tax impact | | | 3 | | | | — | | | | — | | | | 3 | | | | — | | | | 3 | |
| Amounts reclassified from accumulated other comprehensive loss, gross(3) | | | — | | | | 4 | | | | — | | | | 4 | | | | — | | | | 4 | |
| Tax impact | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Net current-period other comprehensive income (loss) | | | 35 | | | | (8 | ) | | | 6 | | | | 33 | | | | — | | | | 33 | |
| Ending balance, March 31, 2025 | | $ | (640 | ) | | $ | (560 | ) | | $ | 6 | | | $ | (1,194 | ) | | $ | 27 | | | $ | (1,167 | ) |
| (1) | Amounts are net of tax of $57 million and $60 million as of March 31, 2025 and January 1, 2025, respectively. |
| (2) | Amounts are net of tax of $61 million as of both March 31, 2025 and January 1, 2025. |
| (3) | See tables below for details about pension and other postretirement benefits reclassifications. |
| | | Three months ended March 31, | | | |
| | | 2026 | | | 2025 | | | |
| | | 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 | ) | | $ | (2 | ) | (3) | Other income, net |
| Actuarial loss | | | 7 | | | | 7 | | (3) | Other income, net |
| Settlement gain | | | — | | | | (1 | ) | (3) | Other income, net |
| | | 5 | | | 4 | | | |
| | | | (1 | ) | | | — | | | Income tax |
| Total reclassifications for the period | | $ | 4 | | | $ | 4 | | | |
| (1) | Details of amounts reclassified from accumulated other comprehensive loss relate only to pension and other postretirement benefits. |
| (2) | Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations. |
| (3) | These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 12. Employee Benefit Plans.” |
Huntsman International
| | | | | | | 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, 2026 | | $ | (547 | ) | | $ | (466 | ) | | $ | — | | | $ | (1,013 | ) | | $ | 23 | | | $ | (990 | ) |
| Other comprehensive loss before reclassifications, gross | | | (13 | ) | | | — | | | | — | | | | (13 | ) | | | (2 | ) | | | (15 | ) |
| Tax impact | | | (1 | ) | | | — | | | | — | | | | (1 | ) | | | — | | | | (1 | ) |
| Amounts reclassified from accumulated other comprehensive loss, gross(3) | | | — | | | | 5 | | | | — | | | | 5 | | | | — | | | | 5 | |
| Tax impact | | | — | | | | (1 | ) | | | — | | | | (1 | ) | | | — | | | | (1 | ) |
| Net current-period other comprehensive (loss) income | | | (14 | ) | | | 4 | | | | — | | | | (10 | ) | | | (2 | ) | | | (12 | ) |
| Ending balance, March 31, 2026 | | $ | (561 | ) | | $ | (462 | ) | | $ | — | | | $ | (1,023 | ) | | $ | 21 | | | $ | (1,002 | ) |
| (1) | Amounts are net of tax of $38 million and $39 million as of March 31, 2026 and January 1, 2026, respectively. |
| (2) | Amounts are net of tax of $73 million and $74 million as of March 31, 2026 and January 1, 2026, respectively. |
| (3) | See tables below for details about pension and other postretirement benefits reclassifications. |
| | | | | | | 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 | | | 32 | | | | (12 | ) | | | 6 | | | | 26 | | | | — | | | | 26 | |
| Tax impact | | | 3 | | | | — | | | | — | | | | 3 | | | | — | | | | 3 | |
| Amounts reclassified from accumulated other comprehensive loss, gross(3) | | | — | | | | 4 | | | | — | | | | 4 | | | | — | | | | 4 | |
| Tax impact | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Net current-period other comprehensive income (loss) | | | 35 | | | | (8 | ) | | | 6 | | | | 33 | | | | — | | | | 33 | |
| Ending balance, March 31, 2025 | | $ | (645 | ) | | $ | (536 | ) | | $ | 2 | | | $ | (1,179 | ) | | $ | 27 | | | $ | (1,152 | ) |
| (1) | Amounts are net of tax of $44 million and $47 million as of March 31, 2025 and January 1, 2025, respectively. |
| (2) | Amounts are net of tax of $85 million as of both March 31, 2025 and January 1, 2025. |
| (3) | See tables below for details about pension and other postretirement benefits reclassifications. |
| | | Three months ended March 31, | | | |
| | | 2026 | | | 2025 | | | |
| | | 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 | ) | | $ | (2 | ) | (3) | Other income, net |
| Actuarial loss | | | 7 | | | | 7 | | (3) | Other income, net |
| Settlement gain | | | — | | | | (1 | ) | (3) | Other income, net |
| | | 5 | | | 4 | | | |
| | | | (1 | ) | | | — | | | Income tax |
| Total reclassifications for the period | | $ | 4 | | | $ | 4 | | | |
| (1) | Details of amounts reclassified from accumulated other comprehensive loss relate only to pension and other postretirement benefits. |
| (2) | Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations. |
| (3) | These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 12. Employee Benefit Plans.” |
Items of other comprehensive (loss) income 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.
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