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
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Income Tax Contingency [Line Items]        
Effective income tax rate percentage (11.70%) (4.70%) (10.50%) (1.40%)
Unrecognized tax benefits $ 118.0   $ 118.0  
Unrecognized tax benefits that would impact effective tax rate 99.8   99.8  
Accrued interest and penalties related to unrecognized tax benefits 1.1   1.1  
Increase in unrecognized tax benefits, reasonably possible 11.2   11.2  
Deferred Tax Asset        
Income Tax Contingency [Line Items]        
Unrecognized tax benefits 112.0   112.0  
Other Noncurrent Liabilities        
Income Tax Contingency [Line Items]        
Unrecognized tax benefits $ 6.0   $ 6.0