Quarterly report pursuant to Section 13 or 15(d)

DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Schedule of Extinguishment of Debt) (Details)

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DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Schedule of Extinguishment of Debt) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Extinguishment of Debt [Line Items]    
Extinguishment of Debt, Amount $ 10.0  
Gain (loss) on extinguishment of debt (0.3) $ 0.0
$700 Million 4.875% 2021 Senior Note [Member]    
Extinguishment of Debt [Line Items]    
Extinguishment of Debt, Amount 10.0  
Gain (loss) on extinguishment of debt $ (0.3)