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 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Mar. 31, 2018
Components of other comprehensive income              
Acquisition of noncontrolling interests, net of tax $ (79)            
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES              
Components of other comprehensive income              
Balance at the beginning of the period 2,676 $ 3,674 $ 2,488 $ 2,834 $ 2,834    
Acquisition of noncontrolling interests, net of tax (79)            
Balance at the end of the period 2,575 3,604 2,575 3,604 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     (20) (152)      
Tax benefit     (1) (4)      
Amounts reclassified from accumulated other comprehensive loss, gross     46 60      
Tax benefit (expense)     (10) (7)      
Net current-period other comprehensive (loss) income     15 (103)      
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     (21) (153)      
Tax benefit     (1) (2)      
Amounts reclassified from accumulated other comprehensive loss, gross     48 61      
Tax benefit (expense)     (10) (6)      
Net current-period other comprehensive (loss) income     16 (100)      
Balance at the end of the period (1,328) (1,516) (1,328) (1,516) (1,344) (1,406)  
Foreign currency translation adjustment              
Components of other comprehensive income              
Other comprehensive (loss) income before reclassifications, gross     (19) (155)      
Tax benefit     (1) (1)      
Net current-period other comprehensive (loss) income     (20) (156)      
Foreign currency translation adjustment, tax     72 66 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     (20) (156)      
Tax benefit     (1) (1)      
Net current-period other comprehensive (loss) income     (21) (157)      
Balance at the end of the period (397) (409) (397) (409) (376) (252)  
Foreign currency translation adjustment, tax     59 52 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 15 19 46 60      
Tax benefit (expense) (4) (3) (10) (1)      
Net current-period other comprehensive (loss) income     36 61      
Pension and other postretirement benefits adjustments, tax     125 171 135 172  
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 15 19 48 61      
Tax benefit (expense) (3) (2) (10) (1)      
Net current-period other comprehensive (loss) income     38 62      
Balance at the end of the period (939) (1,112) (939) (1,112) (977) (1,174)  
Pension and other postretirement benefits adjustments, tax     151 198 161 199  
Other comprehensive income of unconsolidated affiliates              
Components of other comprehensive income              
Other comprehensive (loss) income before reclassifications, gross       1      
Net current-period other comprehensive (loss) income       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 (loss) income       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)  
Other comprehensive (loss) income before reclassifications, gross     (1)        
Tax benefit       (3)      
Tax benefit (expense)       (6)      
Net current-period other comprehensive (loss) income     (1) (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  
Other comprehensive (loss) income before reclassifications, gross     (1)        
Tax benefit       (1)      
Tax benefit (expense)       (5)      
Net current-period other comprehensive (loss) income     (1) (6)      
Balance at the end of the period   1   1 1 17  
Amounts attributable to noncontrolling interests              
Components of other comprehensive income              
Other comprehensive (loss) income before reclassifications, gross     6 32      
Net current-period other comprehensive (loss) income     6 32      
Acquisition of noncontrolling interests, net of tax     (15)        
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     6 32      
Net current-period other comprehensive (loss) income     6 32      
Acquisition of noncontrolling interests, net of tax     (15)        
Disposition of a portion of Venator       (5)      
Balance at the end of the period 27 170 27 170 36 143  
Accumulated other comprehensive loss              
Components of other comprehensive income              
Cumulative effect of changes in fair value of equity investments           (10) $ (10)
Other comprehensive (loss) income before reclassifications, gross     (14) (120)      
Tax benefit     (1) (4)      
Amounts reclassified from accumulated other comprehensive loss, gross     46 60      
Tax benefit (expense)     (10) (7)      
Net current-period other comprehensive (loss) income     21 (71)      
Acquisition of noncontrolling interests, net of tax     (15)        
Disposition of a portion of Venator       (5)      
Accumulated other comprehensive loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES              
Components of other comprehensive income              
Balance at the beginning of the period (1,262) (1,322) (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     (15) (121)      
Tax benefit     (1) (2)      
Amounts reclassified from accumulated other comprehensive loss, gross     48 61      
Tax benefit (expense)     (10) (6)      
Net current-period other comprehensive (loss) income     22 (68)      
Acquisition of noncontrolling interests, net of tax     (15)        
Disposition of a portion of Venator       (5)      
Balance at the end of the period $ (1,301) $ (1,346) $ (1,301) $ (1,346) $ (1,308) $ (1,263)