Quarterly report pursuant to Section 13 or 15(d)

DEBT AND CREDIT FACILITIES (Narrative) (Details)

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DEBT AND CREDIT FACILITIES (Narrative) (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Line of Credit Facility [Line Items]          
Payments of Debt Issuance Costs     $ 5.2 $ 33.6  
Letters of credit outstanding $ 108.8   108.8   $ 186.3
Gain (loss) on extinguishment/restructuring of debt (18.3) $ 79.2 164.1 $ 392.9  
Revolving Credit Facility [Member]          
Line of Credit Facility [Line Items]          
Credit facility, amount outstanding [1] 0.0   0.0    
Line of Credit Facility, Maximum Borrowing Capacity 355.7   355.7   366.0
Debt Instrument, Par Value 550.0 [1]   550.0 [1]   550.0 [2]
Credit facility remaining capacity 246.9   246.9   179.2
Letters of credit outstanding $ 108.8   $ 108.8   $ 186.3
Revolving Credit Facility [Member] | Minimum [Member]          
Line of Credit Facility [Line Items]          
Base Rate     0.005    
$218.5 Million 8.00% 2020 Lien Notes [Member]          
Line of Credit Facility [Line Items]          
Stated interest rate 8.00%   8.00%    
Repurchase Price of $218.5M 8.00% Notes if Triggering Event Occurs     1.01    
Initial Redemption Price     1.04    
Debt Instrument, Par Value $ 218.5   $ 218.5    
Redemption Price after September 30, 2017     1.00    
Redemption Price from time to time and prior to September 30, 2017     1.00    
Amount in aggregate that can be redeemed on or prior to September 30, 2017     0.35    
Redemption Price of 35 percent or less of Outstanding     1.08    
Amount to Remain Outstanding Prior to September 30, 2017     0.65    
$544 Million 7.75% 2020 Lien Notes[Member]          
Line of Credit Facility [Line Items]          
Stated interest rate 7.75%   7.75%    
$540 Million 8.25% 2020 Lien Notes [Member]          
Line of Credit Facility [Line Items]          
Stated interest rate 8.25%   8.25%    
In the Event of Default Amount that will Accelerate     0.25    
Senior Notes Five Hundred Million 3.95% [Member]          
Line of Credit Facility [Line Items]          
Debt Instrument, Par Value $ 283.6   $ 283.6    
Debt Redemption Expenses 2.5        
Debt Instrument, Repurchase Amount 301.0   301.0    
Amortization of Debt Discount (Premium) $ 17.4        
Gain (loss) on extinguishment/restructuring of debt     19.9    
Exchange of Debt [Member] | $218.5 Million 8.00% 2020 Lien Notes [Member]          
Line of Credit Facility [Line Items]          
Gain (loss) on extinguishment/restructuring of debt     $ 174.3    
[1] As of September 30, 2016, no loans were drawn under the ABL Facility and we had total availability of $355.7 million as a result of borrowing base limitations. As of September 30, 2016, the principal amount of letter of credit obligations totaled $108.8 million, thereby further reducing available borrowing capacity on our ABL Facility to $246.9 million.
[2] As of December 31, 2015, no loans were drawn under the ABL Facility and we had total availability of $366.0 million as a result of borrowing base limitations. As of December 31, 2015, the principal amount of letter of credit obligations totaled $186.3 million and commodity hedge obligations totaled $0.5 million, thereby further reducing available borrowing capacity on our ABL Facility to $179.2 million.