Quarterly report pursuant to Section 13 or 15(d)

DEBT AND CREDIT FACILITIES (Schedule Of Long-Term Debt) (Details)

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DEBT AND CREDIT FACILITIES (Schedule Of Long-Term Debt) (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2015
Mar. 31, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2013
Dec. 31, 2014
Debt Instrument [Line Items]              
Gain on extinguishment of debt $ 79,200,000   $ 0 $ 392,900,000 $ 0    
Total Face Amount 3,448,200,000     3,448,200,000     $ 3,980,000,000
Letters of credit outstanding 187,300,000     187,300,000     149,500,000
Long-term Debt 2,721,600,000     2,721,600,000     2,843,300,000
Long-term debt noncurrent portion 2,721,600,000     2,721,600,000     $ 2,843,300,000
$700 Million 4.875% 2021 Senior Note [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Repurchased Face Amount $ 10,700,000 $ 58,300,000   $ 10,700,000      
Stated interest rate 4.875%     4.875%     4.875%
Debt Repurchase Discount 50.00% 52.00%   50.00%      
Debt Instrument, Face Amount Exchanged   $ 208,500,000          
Type       Fixed   Fixed  
Final Maturity       2021   2021  
Total Face Amount $ 700,000,000     $ 700,000,000     $ 700,000,000
Debt Instrument, Par Value 412,500,000     412,500,000     690,000,000
Long-term Debt [1] 412,300,000     412,300,000     689,500,000
Debt Instrument, Unamortized Discount $ 200,000     $ 200,000     $ 500,000
Imputed interest rate 4.89%     4.89%     4.88%
$500 million 4.80% 2020 Senior Notes [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Repurchased Face Amount $ 1,800,000 $ 43,800,000   $ 1,800,000      
Stated interest rate 4.80%     4.80%     4.80%
Debt Repurchase Discount 50.00% 54.30%   50.00%      
Debt Instrument, Face Amount Exchanged   $ 137,800,000          
Type       Fixed   Fixed  
Final Maturity       2020   2020  
Total Face Amount $ 500,000,000     $ 500,000,000     $ 500,000,000
Debt Instrument, Par Value 306,700,000     306,700,000     490,000,000
Long-term Debt [2] 306,300,000     306,300,000     489,400,000
Debt Instrument, Unamortized Discount $ 400,000     $ 400,000     $ 600,000
Imputed interest rate 4.83%     4.83%     4.83%
$800 Million 6.25% 2040 Senior Notes [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Repurchased Face Amount   $ 45,900,000          
Stated interest rate 6.25%     6.25%      
Debt Repurchase Discount   52.50%          
Debt Instrument, Face Amount Exchanged   $ 261,300,000          
Type       Fixed   Fixed  
Final Maturity       2040   2040  
Total Face Amount $ 800,000,000     $ 800,000,000     $ 800,000,000
Debt Instrument, Par Value 492,800,000     492,800,000     800,000,000
Long-term Debt [3] 487,000,000     487,000,000     790,500,000
Debt Instrument, Unamortized Discount $ 5,800,000     $ 5,800,000     $ 9,500,000
Imputed interest rate 6.34%     6.34%     6.34%
$400 Million 5.90% 2020 Senior Notes [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Repurchased Face Amount $ 36,000,000 $ 1,300,000   $ 36,000,000      
Stated interest rate 5.90%     5.90%     5.90%
Debt Repurchase Discount 50.00% 58.00%   50.00%      
Debt Instrument, Face Amount Exchanged   $ 67,000,000          
Type       Fixed   Fixed  
Final Maturity       2020   2020  
Total Face Amount $ 400,000,000     $ 400,000,000     $ 400,000,000
Debt Instrument, Par Value 290,800,000     290,800,000     395,000,000
Long-term Debt [4] 289,900,000     289,900,000     393,700,000
Debt Instrument, Unamortized Discount $ 900,000     $ 900,000     $ 1,300,000
Imputed interest rate 5.98%     5.98%     5.98%
$500 Million 3.95% 2018 Senior Notes [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Repurchased Face Amount   $ 44,000,000          
Stated interest rate 3.95%     3.95%     3.95%
Cash Used to Repurchase Debt $ 68,600,000     $ 68,600,000      
Debt Repurchase Discount   77.50%          
Debt Instrument, Face Amount Exchanged 124,800,000     $ 124,800,000      
Type       Fixed   Fixed  
Final Maturity       2018   2018  
Total Face Amount 500,000,000.0     $ 500,000,000.0     $ 500,000,000
Debt Instrument, Par Value 311,200,000     311,200,000     480,000,000
Long-term Debt [5] 309,900,000     309,900,000     477,400,000
Debt Instrument, Unamortized Discount $ 1,300,000     $ 1,300,000     $ 2,600,000
Imputed interest rate 6.36%     6.36%     5.17%
Five hundred forty million Eight point two five Twenty twenty First Lien Notes [Member]              
Debt Instrument [Line Items]              
Stated interest rate 8.25%     8.25%      
Type       Fixed      
Final Maturity       2020      
Total Face Amount $ 540,000,000     $ 540,000,000     $ 0
Debt Instrument, Par Value 540,000,000     540,000,000      
Long-term Debt 506,400,000     506,400,000      
Debt Instrument, Unamortized Discount $ 33,600,000.0     $ 33,600,000.0      
Imputed interest rate 9.97%     9.97%      
Five hundred Forty-four Million Seven Point Seven Five Twenty Twenty Second Lien Notes [Member]              
Debt Instrument [Line Items]              
Stated interest rate 7.75%     7.75%      
Discount Received in Debt Exchange of $400M 5.90% Notes   $ 15,500,000          
Debt Instrument, Face Amount Received in Debt Exchange of $400M 5.90% Notes   57,500,000          
Debt Instrument, Face Amount Received in Debt Exchange of $800M 6.25% Notes   203,500,000          
Discount Received in Debt Exchange of $800M 6.25% Notes   55,000,000          
Discount Received in Debt Exchange of $500M 4.80% Notes   30,500,000          
Debt Instrument, Face Amount Received in Debt Exchange of $500M 4.80% Notes   112,900,000          
Discount Received in Debt Exchange of $700M 4.875% Notes   46,000,000          
Debt instrument, Face Amount Received in Debt Exchange of $700M 4.875% Notes   170,300,000          
Type       Fixed      
Final Maturity       2020      
Total Face Amount $ 544,200,000     $ 544,200,000     0
Debt Instrument, Par Value 544,200,000     544,200,000      
Long-term Debt 407,400,000     407,400,000      
Debt Instrument, Unamortized Discount $ 136,800,000 147,000,000   $ 136,800,000      
Imputed interest rate 15.55%     15.55%      
Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Type       Variable   Variable  
Final Maturity       2020   2017  
Debt Instrument, Par Value $ 550,000,000     $ 550,000,000     1,125,000,000
Credit facility, amount outstanding 0 [6]     0 [6]     0 [7]
Revolving credit facility, borrowing capacity 442,900,000     442,900,000      
Letters of credit outstanding 187,300,000     187,300,000     $ 149,500,000
Imputed interest rate             2.94%
Credit facility remaining capacity 255,600,000     255,600,000     $ 975,500,000
Interest Rate Swap [Member]              
Debt Instrument [Line Items]              
Fair Value Adjustment to Interest Rate Hedge 2,400,000     $ 2,400,000     $ 2,800,000
Debt Repurchase [Member] | $700 Million 4.875% 2021 Senior Note [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt 5,300,000 20,000,000          
Debt Repurchase [Member] | $500 million 4.80% 2020 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt 900,000 15,600,000          
Debt Repurchase [Member] | $800 Million 6.25% 2040 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt   15,000,000          
Debt Repurchase [Member] | $400 Million 5.90% 2020 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt 18,000,000 300,000          
Debt Repurchase [Member] | $500 Million 3.95% 2018 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt   7,100,000          
Exchange of Debt [Member] | $700 Million 4.875% 2021 Senior Note [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt   83,100,000          
Exchange of Debt [Member] | $500 million 4.80% 2020 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt   54,600,000          
Exchange of Debt [Member] | $800 Million 6.25% 2040 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt   107,300,000          
Exchange of Debt [Member] | $400 Million 5.90% 2020 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt   $ 24,500,000          
Exchange of Debt [Member] | $500 Million 3.95% 2018 Senior Notes [Member]              
Debt Instrument [Line Items]              
Gain on extinguishment of debt $ 54,900,000            
[1] During the third quarter of 2015, we purchased $10.7 million of outstanding 4.875 percent senior notes that were trading at 50.0 percent of par which resulted in a gain on extinguishment of $5.3 million. In addition, during the first quarter of 2015, we purchased $58.3 million of outstanding 4.875 percent senior notes that were trading at 52.0 percent of par, which resulted in a gain on extinguishment of $20.0 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $208.5 million of the 4.875 percent senior notes for $170.3 million of the 7.75 percent second lien notes at a discount of $46.0 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $83.1 million, net of amounts expensed for unamortized original issue discount and deferred origination fees. As of September 30, 2015, the $700.0 million 4.875 percent senior notes were recorded at a par value of $412.5 million less unamortized discounts of $0.2 million, based on an imputed interest rate of 4.89 percent. As of December 31, 2014, the $700.0 million 4.875 percent senior notes were recorded at a par value of $690.0 million less unamortized discounts of $0.5 million based on an imputed interest rate of 4.88 percent.
[2] During the third quarter of 2015, we purchased $1.8 million of outstanding 4.80 percent senior notes that were trading at 50.0 percent of par, which resulted in a gain on extinguishment of $0.9 million. In addition, during the first quarter of 2015, we purchased $43.8 million of outstanding 4.80 percent senior notes that were trading at 54.3 percent of par, which resulted in a gain on extinguishment of $15.6 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $137.8 million of the 4.80 percent senior notes for $112.9 million of the 7.75 percent second lien notes at a discount of $30.5 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $54.6 million, net of amounts expensed for unamortized original issue discount and deferred origination fees. As of September 30, 2015, the $500.0 million 4.80 percent senior notes were recorded at a par value of $306.7 million less unamortized discounts of $0.4 million, based on an imputed interest rate of 4.83 percent. As of December 31, 2014, the $500.0 million 4.80 percent senior notes were recorded at a par value of $490.0 million less unamortized discounts of $0.6 million based on an imputed interest rate of 4.83 percent.
[3] During the first quarter of 2015, we purchased $45.9 million of outstanding 6.25 percent senior notes that were trading at 52.5 percent of par, which resulted in a gain on extinguishment of $15.0 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $261.3 million of the 6.25 percent senior notes for $203.5 million of the 7.75 percent second lien notes at a discount of $55.0 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $107.3 million, net of amounts expensed for unamortized original issue discount and deferred origination fees. As of September 30, 2015, the $800 million 6.25 percent senior notes were recorded at a par value of $492.8 million less unamortized discounts of $5.8 million, based on an imputed interest rate of 6.34 percent. As of December 31, 2014, the $800 million 6.25 percent senior notes were recorded at a par value of $800.0 million less unamortized discounts of $9.5 million based on an imputed interest rate of 6.34 percent.
[4] During the third quarter of 2015, we purchased $36.0 million of outstanding 5.90 percent senior notes that were trading at 50.0 percent of par, which resulted in a gain on extinguishment of $18.0 million. In addition, during the first quarter of 2015, we purchased $1.3 million of outstanding 5.90 percent senior notes that were trading at 58.0 percent of par, which resulted in a gain on extinguishment of $0.3 million. Also during the first quarter, on March 27, 2015, we exchanged as part of a tender offer $67.0 million of the 5.90 percent senior notes for $57.5 million of the 7.75 percent second lien notes at a discount of $15.5 million based on an imputed interest rate of 15.55 percent, resulting in a gain on extinguishment of $24.5 million, net of amounts expensed for unamortized original issue discount and deferred origination fees. As of September 30, 2015, the $400.0 million 5.90 percent senior notes were recorded at a par value of $290.8 million less unamortized discounts of $0.9 million, based on an imputed interest rate of 5.98 percent. As of December 31, 2014, the $400.0 million 5.90 percent senior notes were recorded at a par value of $395.0 million less unamortized discounts of $1.3 million based on an imputed interest rate of 5.98 percent.
[5] During the third quarter, on August 28, 2015, we purchased for cash as part of a tender offer, $124.8 million of the 3.95 percent senior notes for $68.6 million, resulting in a gain on extinguishment of $54.9 million, net of amounts expensed for reacquisition costs, unamortized original issue discount and deferred origination fees. In addition, during the first quarter of 2015, we purchased $44.0 million of outstanding 3.95 percent senior notes that were trading at 77.5 percent of par, which resulted in a gain on the extinguishment of debt of $7.1 million.As of September 30, 2015, the $500.0 million 3.95 percent senior notes were recorded at a par value of $311.2 million less unamortized discounts of $1.3 million, based on an imputed interest rate of 6.36 percent. As of December 31, 2014, the $500.0 million 3.95 percent senior notes were recorded at a par value of $480.0 million less unamortized discounts of $2.6 million based on an imputed interest rate of 5.17 percent.
[6] As of September 30, 2015, no loans were drawn under the ABL Facility and we had total availability of $442.9 million as a result of borrowing base limitations. As of September 30, 2015, the principal amount of letter of credit obligations totaled $187.3 million, thereby further reducing available borrowing capacity on our ABL Facility to $255.6 million.
[7] As of December 31, 2014, we had no revolving loans drawn under the revolving credit agreement which had $1.125 billion availability. As of December 31, 2014, the principal amount of letter of credit obligations totaled $149.5 million, thereby reducing available borrowing capacity on the revolving credit agreement to $975.5 million.