Quarterly report pursuant to Section 13 or 15(d)

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

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ACCUMULATED OTHER COMPREHENSIVE LOSS - 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, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Components of other comprehensive income                
Other comprehensive income (loss), net of tax $ 29 $ (21) $ (9) $ 54 $ 8 $ 45    
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period 3,428 2,772 2,640 2,488 2,772 2,488 $ 2,488  
Other comprehensive income (loss), net of tax 29 (20) (8) 54 9 46    
Balance at the end of the period 3,369 3,428 2,676 2,640 3,369 2,676 2,772 $ 2,488
Total                
Components of other comprehensive income                
Other comprehensive (loss) income before reclassifications, gross         (44) 19    
Tax benefit         (6) 1    
Amounts reclassified from accumulated other comprehensive loss, gross         75 31    
Tax benefit (expense)         (17) (6)    
Other comprehensive income (loss), net of tax         8 45    
Total | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period   (1,378)   (1,344) (1,378) (1,344) (1,344)  
Other comprehensive (loss) income before reclassifications, gross         (45) 19    
Tax benefit         (6) 1    
Amounts reclassified from accumulated other comprehensive loss, gross         77 33    
Tax benefit (expense)         (17) (7)    
Other comprehensive income (loss), net of tax         9 46    
Balance at the end of the period (1,369)   (1,298)   (1,369) (1,298) (1,378) (1,344)
Foreign currency translation adjustment                
Components of other comprehensive income                
Other comprehensive (loss) income before reclassifications, gross         (52) 19    
Tax benefit         (4) 1    
Other comprehensive income (loss), net of tax         (56) 20    
Foreign currency translation adjustment, tax         72 70 68 71
Foreign currency translation adjustment | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period   (374)   (376) (374) (376) (376)  
Other comprehensive (loss) income before reclassifications, gross         (53) 19    
Tax benefit         (4) 1    
Other comprehensive income (loss), net of tax         (57) 20    
Balance at the end of the period (431)   (356)   (431) (356) (374) (376)
Foreign currency translation adjustment, tax         59 56 55 57
Pension and other postretirement benefits adjustments                
Components of other comprehensive income                
Other comprehensive (loss) income before reclassifications, gross         8      
Tax benefit         (2)      
Amounts reclassified from accumulated other comprehensive loss, gross 17   16   75 31    
Tax benefit (expense) (3)   (3)   (17) (6)    
Other comprehensive income (loss), net of tax         64 25    
Pension and other postretirement benefits adjustments, tax         129 129 148 135
Pension and other postretirement benefits adjustments | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period   (1,012)   (977) (1,012) (977) (977)  
Other comprehensive (loss) income before reclassifications, gross         8      
Tax benefit         (2)      
Amounts reclassified from accumulated other comprehensive loss, gross 18   17   77 33    
Tax benefit (expense) (3)   (4)   (17) (7)    
Other comprehensive income (loss), net of tax         66 26    
Balance at the end of the period (946)   (951)   (946) (951) (1,012) (977)
Pension and other postretirement benefits adjustments, tax         155 154 174 161
Other comprehensive income of unconsolidated affiliates | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period   8   8 8 8 8  
Balance at the end of the period 8   8   8 8 8 8
Other, net | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period       1   1 1  
Balance at the end of the period     1     1   1
Amounts attributable to noncontrolling interests | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period   26   36 26 36 36  
Balance at the end of the period 26   36   26 36 26 36
Accumulated other comprehensive loss                
Components of other comprehensive income                
Other comprehensive (loss) income before reclassifications, gross         (44) 19    
Tax benefit         (6) 1    
Amounts reclassified from accumulated other comprehensive loss, gross         75 31    
Tax benefit (expense)         (17) (6)    
Other comprehensive income (loss), net of tax 29 (21) (7) 52 8 45    
Accumulated other comprehensive loss | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                
Components of other comprehensive income                
Balance at the beginning of the period (1,372) (1,352) (1,256) (1,308) (1,352) (1,308) (1,308)  
Other comprehensive (loss) income before reclassifications, gross         (45) 19    
Tax benefit         (6) 1    
Amounts reclassified from accumulated other comprehensive loss, gross         77 33    
Tax benefit (expense)         (17) (7)    
Other comprehensive income (loss), net of tax 29 (20) (6) 52 9 46    
Balance at the end of the period $ (1,343) $ (1,372) $ (1,262) $ (1,256) $ (1,343) $ (1,262) $ (1,352) $ (1,308)