Note 14 - Accumulated Other Comprehensive Loss - Reclassification Details (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||||||||||||||||||||||||
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Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
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Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [1],[2],[3] | $ (3) | $ (5) | $ (6) | [4] | $ (8) | [4] | |||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [1],[2],[3] | (3) | (5) | (6) | (8) | |||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Actuarial Gain (Loss), Including Portion Attributable to Noncontrolling Interest [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [2],[3] | 9 | 17 | 25 | [4] | 25 | [4] | |||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Actuarial Gain (Loss), Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [1],[2],[3] | 9 | 17 | 25 | 25 | |||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [2],[3] | 6 | 12 | 19 | [5],[6] | 83 | [6],[7],[8] | |||||||||||||||||||||||
Tax impact | [2],[3] | 0 | 0 | (1) | [5] | 25 | [7],[8] | |||||||||||||||||||||||
Total reclassifications for the period | [2],[3] | 6 | 12 | 18 | 108 | |||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [2],[3] | 6 | 12 | 19 | [6],[9] | 83 | [6],[10] | |||||||||||||||||||||||
Tax impact | [2],[3] | 0 | 0 | (1) | [9] | 25 | [10] | |||||||||||||||||||||||
Total reclassifications for the period | [2],[3] | $ 6 | $ 12 | 18 | 108 | |||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Curtailment Gain (Loss) Attributable to Noncontrolling Interest [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [2],[4],[11] | 0 | (1) | |||||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Curtailment Gain (Loss) Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [12] | 0 | (1) | |||||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss), Including Portion Attributable to Noncontrolling Interest [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [2],[4],[11] | 0 | 67 | |||||||||||||||||||||||||||
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss), Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member] | ||||||||||||||||||||||||||||||
Amounts reclassified from accumulated other comprehensive loss, gross | [12] | $ 0 | $ 67 | |||||||||||||||||||||||||||
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