Quarterly report pursuant to Section 13 or 15(d)

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

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OTHER COMPREHENSIVE INCOME - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN INTERNATIONAL (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
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
Components of other comprehensive income            
Balance at the beginning of the period $ 2,640 $ 3,279 $ 2,488 $ 2,834 $ 2,834  
Balance at the end of the period 2,676 3,674 2,676 3,674 2,488 $ 2,834
Total            
Components of other comprehensive income            
Cumulative effect of changes in fair value of equity investments           (10)
Other comprehensive (loss) income before reclassifications, gross     19 (102)    
Tax benefit     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)    
Total | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
Components of other comprehensive income            
Balance at the beginning of the period     (1,344) (1,406) (1,406)  
Cumulative effect of changes in fair value of equity investments           (10)
Revised beginning balance           (1,416)
Other comprehensive (loss) income before reclassifications, gross     19 (102)    
Tax benefit     1 (11)    
Amounts reclassified from accumulated other comprehensive loss, gross     33 42    
Tax benefit (expense)     (7) (4)    
Net current-period other comprehensive income (loss)     46 (75)    
Balance at the end of the period (1,298) (1,491) (1,298) (1,491) (1,344) (1,406)
Foreign currency translation adjustment            
Components of other comprehensive income            
Other comprehensive (loss) income before reclassifications, gross     19 (105)    
Tax benefit     1 (10)    
Net current-period other comprehensive income (loss)     20 (115)    
Foreign currency translation adjustment, tax     70 75 71 65
Foreign currency translation adjustment | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
Components of other comprehensive income            
Balance at the beginning of the period     (376) (252) (252)  
Revised beginning balance           (252)
Other comprehensive (loss) income before reclassifications, gross     19 (105)    
Tax benefit     1 (10)    
Net current-period other comprehensive income (loss)     20 (115)    
Balance at the end of the period (356) (367) (356) (367) (376) (252)
Foreign currency translation adjustment, tax     56 61 57 51
Pension and other postretirement benefits adjustments            
Components of other comprehensive income            
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    
Pension and other postretirement benefits adjustments, tax     129 174 135 172
Pension and other postretirement benefits adjustments | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
Components of other comprehensive income            
Balance at the beginning of the period     (977) (1,174) (1,174)  
Revised beginning balance           (1,174)
Other comprehensive (loss) income before reclassifications, gross       2    
Amounts reclassified from accumulated other comprehensive loss, gross 17 20 33 42    
Tax benefit (expense) (4) (4) (7) 1    
Net current-period other comprehensive income (loss)     26 45    
Balance at the end of the period (951) (1,129) (951) (1,129) (977) (1,174)
Pension and other postretirement benefits adjustments, tax     154 200 161 199
Other comprehensive income of unconsolidated affiliates            
Components of other comprehensive income            
Other comprehensive (loss) income before reclassifications, gross       1    
Net current-period other comprehensive income (loss)       1    
Other comprehensive income of unconsolidated affiliates | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
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            
Cumulative effect of changes in fair value of equity investments           (10)
Tax benefit       (3)    
Tax benefit (expense)       (6)    
Net current-period other comprehensive income (loss)       (9)    
Other, net | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
Components of other comprehensive income            
Balance at the beginning of the period     1 17 17  
Cumulative effect of changes in fair value of equity investments           (10)
Revised beginning balance           7
Tax benefit       (1)    
Tax benefit (expense)       (5)    
Net current-period other comprehensive income (loss)       (6)    
Balance at the end of the period 1 1 1 1 1 17
Amounts attributable to noncontrolling interests            
Components of other comprehensive income            
Other comprehensive (loss) income before reclassifications, gross       31    
Net current-period other comprehensive income (loss)       31    
Disposition of a portion of Venator       (5)    
Amounts attributable to noncontrolling interests | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
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            
Cumulative effect of changes in fair value of equity investments           (10)
Other comprehensive (loss) income before reclassifications, gross     19 (71)    
Tax benefit     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)    
Accumulated other comprehensive (loss) income | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES            
Components of other comprehensive income            
Balance at the beginning of the period (1,256) (1,191) (1,308) (1,263) (1,263)  
Cumulative effect of changes in fair value of equity investments           (10)
Revised beginning balance           (1,273)
Other comprehensive (loss) income before reclassifications, gross     19 (71)    
Tax benefit     1 (11)    
Amounts reclassified from accumulated other comprehensive loss, gross     33 42    
Tax benefit (expense)     (7) (4)    
Net current-period other comprehensive income (loss)     46 (44)    
Disposition of a portion of Venator       (5)    
Balance at the end of the period $ (1,262) $ (1,322) $ (1,262) $ (1,322) $ (1,308) $ (1,263)