Quarterly report pursuant to Section 13 or 15(d)

INCOME TAXES (Details)

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INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
INCOME TAXES        
Net increase (decrease) in unrecognized tax benefits with a corresponding income tax expense     $ 6.0 $ 1.0
Income tax expense (benefit) $ 45.0 $ 32.0 $ 68.0 59.0
Effective tax rate (as a percent)     35.00%  
Italy | Polyurethanes        
INCOME TAXES        
Release of valuation allowance     $ 7.0  
Luxembourg        
INCOME TAXES        
Release of valuation allowance     11.0  
Huntsman International        
INCOME TAXES        
Income tax expense (benefit) $ 44.0 $ 31.0 $ 67.0 $ 58.0
Effective tax rate (as a percent)     35.00%