Quarterly report pursuant to Section 13 or 15(d)

DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Debt Restructuring) (Details)

v3.7.0.1
DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Debt Restructuring) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     $ 1,106.4  
Gain (loss) on extinguishment/restructuring of debt $ (4.9) $ 3.6 (76.8) $ 182.4
$540 Million 8.25% 2020 Lien Notes [Member]        
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     35.6  
Gain (loss) on extinguishment/restructuring of debt (4.9)   (4.9)  
$218.5 Million 8.00% 2020 Lien Notes [Member]        
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     218.5  
Gain (loss) on extinguishment/restructuring of debt 0.0   45.1  
$544 Million 7.75% 2020 Lien Notes[Member]        
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     430.1  
Gain (loss) on extinguishment/restructuring of debt 0.0   (104.5)  
$400 Million 5.90% 2020 Senior Notes [Member]        
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     136.8  
Gain (loss) on extinguishment/restructuring of debt 0.0   (7.8)  
Five Hundred Million Four Point Eight Zero Percent Senior Note [Member]        
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     114.4  
Gain (loss) on extinguishment/restructuring of debt 0.0   (1.9)  
$700 Million 4.875% 2021 Senior Note [Member]        
Extinguishment of Debt [Line Items]        
Extinguishment of Debt, Amount     171.0  
Gain (loss) on extinguishment/restructuring of debt $ 0.0   $ (2.8)