Quarterly report pursuant to Section 13 or 15(d)

OTHER COMPREHENSIVE INCOME - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN CORPORATION (Details)

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OTHER COMPREHENSIVE INCOME - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN CORPORATION (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Components of other comprehensive income            
Balance at the beginning of the period $ 2,863 $ 3,769 $ 2,749 $ 3,371 $ 3,371  
Balance at the end of the period 2,820 4,070 2,820 4,070 2,749 $ 3,371
Total            
Components of other comprehensive income            
Balance at the beginning of the period     (1,352) (1,411) (1,411)  
Cumulative effect of changes in fair value of equity investments           (10)
Revised beginning balance           (1,421)
Other comprehensive (loss) income before reclassifications, gross     19 (102)    
Tax benefit (expense)     1 (13)    
Amounts reclassified from accumulated other comprehensive loss, gross     31 41    
Tax benefit (expense)     (6) (4)    
Net current-period other comprehensive income (loss)     45 (78)    
Balance at the end of the period (1,307) (1,499) (1,307) (1,499) (1,352) (1,411)
Foreign currency translation adjustment            
Components of other comprehensive income            
Balance at the beginning of the period     (371) (249) (249)  
Revised beginning balance           (249)
Other comprehensive (loss) income before reclassifications, gross     19 (105)    
Tax benefit (expense)     1 (10)    
Net current-period other comprehensive income (loss)     20 (115)    
Balance at the end of the period (351) (364) (351) (364) (371) (249)
Foreign currency translation adjustment, tax     70 75 71 65
Pension and other postretirement benefits adjustments            
Components of other comprehensive income            
Balance at the beginning of the period     (994) (1,189) (1,189)  
Revised beginning balance           (1,189)
Other comprehensive (loss) income before reclassifications, gross       2    
Amounts reclassified from accumulated other comprehensive loss, gross 16 19 31 41    
Tax benefit (expense) (3) (3) (6) 2    
Net current-period other comprehensive income (loss)     25 45    
Balance at the end of the period (969) (1,144) (969) (1,144) (994) (1,189)
Pension and other postretirement benefits adjustments, tax     129 174 135 172
Other comprehensive income of unconsolidated affiliates            
Components of other comprehensive income            
Balance at the beginning of the period     8 3 3  
Revised beginning balance           3
Other comprehensive (loss) income before reclassifications, gross       1    
Net current-period other comprehensive income (loss)       1    
Balance at the end of the period 8 4 8 4 8 3
Other, net            
Components of other comprehensive income            
Balance at the beginning of the period     5 24 24  
Cumulative effect of changes in fair value of equity investments           (10)
Revised beginning balance           14
Tax benefit (expense)       (3)    
Tax benefit (expense)       (6)    
Net current-period other comprehensive income (loss)       (9)    
Balance at the end of the period 5 5 5 5 5 24
Amounts attributable to noncontrolling interests            
Components of other comprehensive income            
Balance at the beginning of the period     36 143 143  
Revised beginning balance           143
Other comprehensive (loss) income before reclassifications, gross       31    
Net current-period other comprehensive income (loss)       31    
Disposition of a portion of Venator       (5)    
Balance at the end of the period 36 169 36 169 36 143
Accumulated other comprehensive (loss) income            
Components of other comprehensive income            
Balance at the beginning of the period (1,264) (1,198) (1,316) (1,268) (1,268)  
Cumulative effect of changes in fair value of equity investments           (10)
Revised beginning balance           (1,278)
Other comprehensive (loss) income before reclassifications, gross     19 (71)    
Tax benefit (expense)     1 (13)    
Amounts reclassified from accumulated other comprehensive loss, gross     31 41    
Tax benefit (expense)     (6) (4)    
Net current-period other comprehensive income (loss)     45 (47)    
Disposition of a portion of Venator       (5)    
Balance at the end of the period $ (1,271) $ (1,330) $ (1,271) $ (1,330) $ (1,316) $ (1,268)