Quarterly report pursuant to Section 13 or 15(d)

NEW ACCOUNTING STANDARDS (Narrative) (Details)

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NEW ACCOUNTING STANDARDS (Narrative) (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Jan. 01, 2018
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
TOTAL DEFICIT $ (306.3) $ (410.1) $ (444.1) $ (666.7) $ (1,330.5)
Retained deficit (306.3) (410.3) $ (444.3)    
Total minimum lease payments 16.1        
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]          
TOTAL DEFICIT 65.3 34.0      
Retained deficit $ 65.3 $ 34.0