Quarterly report pursuant to Section 13 or 15(d)

Note 14 - Accumulated Other Comprehensive Loss (Details Textual)

v3.21.2
Note 14 - Accumulated Other Comprehensive Loss (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]            
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total     $ 56 $ 72 $ 56 $ 68
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]            
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total     43 59 43 55
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]            
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Total     143 129 153 148
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]            
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Total     168 155 $ 178 $ 174
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]            
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax, Total       41    
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Huntsman International LLC [Member]            
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax, Total       41    
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]            
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax, Total $ 1 $ 2 3 3    
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Huntsman International LLC [Member]            
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax, Total $ 1 $ 2 $ 3 $ 3