Annual report pursuant to Section 13 and 15(d)

OTHER COMPREHENSIVE (LOSS) INCOME - RECLASSIFICATION DETAILS - HUNTSMAN CORPORATION (Details)

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OTHER COMPREHENSIVE (LOSS) INCOME - RECLASSIFICATION DETAILS - HUNTSMAN CORPORATION (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Pension and other postretirement benefits adjustments      
Reclassification from accumulated other comprehensive loss      
Total before tax $ 62 $ 77 $ 80
Income tax benefit (expense) (12) (13) (14)
Net of tax 50 64 66
Pension and other postretirement benefits adjustments | Discontinued Operations      
Reclassification from accumulated other comprehensive loss      
Total before tax 7 22 22
Prior service credit      
Reclassification from accumulated other comprehensive loss      
Total before tax (11) (12) (15)
Settlement loss      
Reclassification from accumulated other comprehensive loss      
Total before tax 1 2  
Actuarial loss | Discontinued Operations      
Reclassification from accumulated other comprehensive loss      
Total before tax $ 72 $ 87 $ 95