Annual report pursuant to Section 13 and 15(d)

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

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OTHER COMPREHENSIVE (LOSS) INCOME - COMPONENTS AND CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS - HUNTSMAN INTERNATIONAL (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES      
Components of other comprehensive income      
Balance at the beginning of the period $ 2,488 $ 2,834 $ 936
Balance at the end of the period 2,772 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 (113) (316)  
Tax benefit 27 18  
Amounts reclassified from accumulated other comprehensive loss, gross 62 77  
Tax benefit (expense) (12) (19)  
Net current-period other comprehensive (loss) income (36) (240)  
Deconsolidation of Venator   360  
Total | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES      
Components of other comprehensive income      
Balance at the beginning of the period (1,344) (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 (114) (318)  
Tax benefit 27 20  
Amounts reclassified from accumulated other comprehensive loss, gross 65 80  
Tax benefit (expense) (12) (19)  
Net current-period other comprehensive (loss) income (34) (237)  
Deconsolidation of Venator   360  
Tax expense   (51)  
Balance at the end of the period (1,378) (1,344) (1,406)
Foreign currency translation adjustment      
Components of other comprehensive income      
Other comprehensive (loss) income before reclassifications, gross   (186)  
Tax benefit 2 (6)  
Net current-period other comprehensive (loss) income 2 (192)  
Deconsolidation of Venator   70  
Foreign currency translation adjustment, tax 68 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)  
Revised beginning balance     (252)
Other comprehensive (loss) income before reclassifications, gross   (188)  
Tax benefit 2 (6)  
Net current-period other comprehensive (loss) income 2 (194)  
Deconsolidation of Venator   70  
Balance at the end of the period (374) (376) (252)
Foreign currency translation adjustment, tax 55 57 51
Pension and other postretirement benefits adjustments      
Components of other comprehensive income      
Other comprehensive (loss) income before reclassifications, gross (112) (130)  
Tax benefit 25 27  
Amounts reclassified from accumulated other comprehensive loss, gross 62 77 80
Tax benefit (expense) (12) (13) (14)
Net current-period other comprehensive (loss) income (37) (39)  
Deconsolidation of Venator   285  
Pension and other postretirement benefits adjustments, tax 148 135 172
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)  
Revised beginning balance     (1,174)
Other comprehensive (loss) income before reclassifications, gross (113) (130)  
Tax benefit 25 27  
Amounts reclassified from accumulated other comprehensive loss, gross 65 80 86
Tax benefit (expense) (12) (14) (15)
Net current-period other comprehensive (loss) income (35) (37)  
Deconsolidation of Venator   285  
Tax expense   (51)  
Balance at the end of the period (1,012) (977) (1,174)
Pension and other postretirement benefits adjustments, tax 174 161 199
Other comprehensive income of unconsolidated affiliates      
Components of other comprehensive income      
Deconsolidation of Venator   5  
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  
Revised beginning balance     3
Deconsolidation of Venator   5  
Balance at the end of the period 8 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  
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 17
Amounts attributable to noncontrolling interests      
Components of other comprehensive income      
Other comprehensive (loss) income before reclassifications, gross 5 47  
Net current-period other comprehensive (loss) income 5 47  
Acquisition of noncontrolling interests, net of tax (15)    
Disposition of a portion of Venator   (5)  
Deconsolidation of Venator   (149)  
Amounts attributable to noncontrolling interests | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES      
Components of other comprehensive income      
Balance at the beginning of the period 36 143  
Revised beginning balance     143
Other comprehensive (loss) income before reclassifications, gross 5 47  
Net current-period other comprehensive (loss) income 5 47  
Disposition of a portion of Venator   (5)  
Deconsolidation of Venator   (149)  
Balance at the end of the period 26 36 143
Accumulated other comprehensive loss      
Components of other comprehensive income      
Cumulative effect of changes in fair value of equity investments     (10)
Other comprehensive (loss) income before reclassifications, gross (108) (269)  
Tax benefit 27 18  
Amounts reclassified from accumulated other comprehensive loss, gross 62 77  
Tax benefit (expense) (12) (19)  
Net current-period other comprehensive (loss) income (31) (193)  
Acquisition of noncontrolling interests, net of tax (15)    
Disposition of a portion of Venator   (5)  
Deconsolidation of Venator   211  
Accumulated other comprehensive loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES      
Components of other comprehensive income      
Balance at the beginning of the period (1,308) (1,263) (1,691)
Cumulative effect of changes in fair value of equity investments     (10)
Revised beginning balance     (1,273)
Other comprehensive (loss) income before reclassifications, gross (109) (271)  
Tax benefit 27 20  
Amounts reclassified from accumulated other comprehensive loss, gross 65 80  
Tax benefit (expense) (12) (19)  
Net current-period other comprehensive (loss) income (29) (190)  
Disposition of a portion of Venator   (5)  
Deconsolidation of Venator   211  
Tax expense   (51)  
Balance at the end of the period $ (1,352) $ (1,308) $ (1,263)