Annual report pursuant to Section 13 and 15(d)

BUSINESS COMBINATION AND ACQUISITIONS - SASOL (Details)

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BUSINESS COMBINATION AND ACQUISITIONS - SASOL (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
BUSINESS COMBINATIONS                        
Net income attributable to Huntsman Corporation / Huntsman International shareholders   $ 303 $ 30 $ 110 $ 119 $ (340) $ (11) $ 414 $ 274 $ 562 $ 337 $ 636
Decrease in Huntsman Corporation's / Huntsman International's paid-in capital for purchase of 50% interest in Sasol-Huntsman                   (84)    
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                        
BUSINESS COMBINATIONS                        
Net income attributable to Huntsman Corporation / Huntsman International shareholders   $ 306 $ 27 $ 107 $ 116 $ (345) $ (14) $ 411 $ 271 551 323 629
Decrease in Huntsman Corporation's / Huntsman International's paid-in capital for purchase of 50% interest in Sasol-Huntsman                   (84)    
Sasol Huntsman GmbH and Co. KG                        
BUSINESS COMBINATIONS                        
Percentage of joint interest acquired 50.00%                      
Payment to acquire adjusted for debt and other terms $ 101                      
Net income attributable to Huntsman Corporation / Huntsman International shareholders                   562 337 636
Decrease in Huntsman Corporation's / Huntsman International's paid-in capital for purchase of 50% interest in Sasol-Huntsman                   (11)    
Net transfers to noncontrolling interest                   (11)    
Change from net income attributable to Huntsman Corporation / Huntsman International shareholders and transfers to noncontrolling interest                   551 337 636
Sasol Huntsman GmbH and Co. KG | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES                        
BUSINESS COMBINATIONS                        
Percentage of joint interest acquired 50.00%                      
Net income attributable to Huntsman Corporation / Huntsman International shareholders                   551 323 629
Decrease in Huntsman Corporation's / Huntsman International's paid-in capital for purchase of 50% interest in Sasol-Huntsman                   (11)    
Net transfers to noncontrolling interest                   (11)    
Change from net income attributable to Huntsman Corporation / Huntsman International shareholders and transfers to noncontrolling interest                   $ 540 $ 323 $ 629