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 |
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Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | $ 79,200,000 | Ìý | $ 0 | $ 392,900,000 | $ 0 | Ìý | Ìý | ||||||||||||||||||
Total Face Amount | 3,448,200,000 | Ìý | Ìý | 3,448,200,000 | Ìý | Ìý | $ 3,980,000,000 | ||||||||||||||||||
Letters of credit outstanding | 187,300,000 | Ìý | Ìý | 187,300,000 | Ìý | Ìý | 149,500,000 | ||||||||||||||||||
Long-term Debt | 2,721,600,000 | Ìý | Ìý | 2,721,600,000 | Ìý | Ìý | 2,843,300,000 | ||||||||||||||||||
Long-term debt noncurrent portion | 2,721,600,000 | Ìý | Ìý | 2,721,600,000 | Ìý | Ìý | $ 2,843,300,000 | ||||||||||||||||||
$700 Million 4.875% 2021 Senior Note [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Repurchased Face Amount | $ 10,700,000 | $ 58,300,000 | Ìý | $ 10,700,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 4.875% | Ìý | Ìý | 4.875% | Ìý | Ìý | 4.875% | ||||||||||||||||||
Debt Repurchase Discount | 50.00% | 52.00% | Ìý | 50.00% | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Exchanged | Ìý | $ 208,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Fixed | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2021 | Ìý | 2021 | Ìý | ||||||||||||||||||
Total Face Amount | $ 700,000,000 | Ìý | Ìý | $ 700,000,000 | Ìý | Ìý | $ 700,000,000 | ||||||||||||||||||
Debt Instrument, Par Value | 412,500,000 | Ìý | Ìý | 412,500,000 | Ìý | Ìý | 690,000,000 | ||||||||||||||||||
Long-term Debt | [1] | 412,300,000 | Ìý | Ìý | 412,300,000 | Ìý | Ìý | 689,500,000 | |||||||||||||||||
Debt Instrument, Unamortized Discount | $ 200,000 | Ìý | Ìý | $ 200,000 | Ìý | Ìý | $ 500,000 | ||||||||||||||||||
Imputed interest rate | 4.89% | Ìý | Ìý | 4.89% | Ìý | Ìý | 4.88% | ||||||||||||||||||
$500 million 4.80% 2020 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Repurchased Face Amount | $ 1,800,000 | $ 43,800,000 | Ìý | $ 1,800,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 4.80% | Ìý | Ìý | 4.80% | Ìý | Ìý | 4.80% | ||||||||||||||||||
Debt Repurchase Discount | 50.00% | 54.30% | Ìý | 50.00% | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Exchanged | Ìý | $ 137,800,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Fixed | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2020 | Ìý | 2020 | Ìý | ||||||||||||||||||
Total Face Amount | $ 500,000,000 | Ìý | Ìý | $ 500,000,000 | Ìý | Ìý | $ 500,000,000 | ||||||||||||||||||
Debt Instrument, Par Value | 306,700,000 | Ìý | Ìý | 306,700,000 | Ìý | Ìý | 490,000,000 | ||||||||||||||||||
Long-term Debt | [2] | 306,300,000 | Ìý | Ìý | 306,300,000 | Ìý | Ìý | 489,400,000 | |||||||||||||||||
Debt Instrument, Unamortized Discount | $ 400,000 | Ìý | Ìý | $ 400,000 | Ìý | Ìý | $ 600,000 | ||||||||||||||||||
Imputed interest rate | 4.83% | Ìý | Ìý | 4.83% | Ìý | Ìý | 4.83% | ||||||||||||||||||
$800 Million 6.25% 2040 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Repurchased Face Amount | Ìý | $ 45,900,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 6.25% | Ìý | Ìý | 6.25% | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Repurchase Discount | Ìý | 52.50% | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Exchanged | Ìý | $ 261,300,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Fixed | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2040 | Ìý | 2040 | Ìý | ||||||||||||||||||
Total Face Amount | $ 800,000,000 | Ìý | Ìý | $ 800,000,000 | Ìý | Ìý | $ 800,000,000 | ||||||||||||||||||
Debt Instrument, Par Value | 492,800,000 | Ìý | Ìý | 492,800,000 | Ìý | Ìý | 800,000,000 | ||||||||||||||||||
Long-term Debt | [3] | 487,000,000 | Ìý | Ìý | 487,000,000 | Ìý | Ìý | 790,500,000 | |||||||||||||||||
Debt Instrument, Unamortized Discount | $ 5,800,000 | Ìý | Ìý | $ 5,800,000 | Ìý | Ìý | $ 9,500,000 | ||||||||||||||||||
Imputed interest rate | 6.34% | Ìý | Ìý | 6.34% | Ìý | Ìý | 6.34% | ||||||||||||||||||
$400 Million 5.90% 2020 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Repurchased Face Amount | $ 36,000,000 | $ 1,300,000 | Ìý | $ 36,000,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 5.90% | Ìý | Ìý | 5.90% | Ìý | Ìý | 5.90% | ||||||||||||||||||
Debt Repurchase Discount | 50.00% | 58.00% | Ìý | 50.00% | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Exchanged | Ìý | $ 67,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Fixed | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2020 | Ìý | 2020 | Ìý | ||||||||||||||||||
Total Face Amount | $ 400,000,000 | Ìý | Ìý | $ 400,000,000 | Ìý | Ìý | $ 400,000,000 | ||||||||||||||||||
Debt Instrument, Par Value | 290,800,000 | Ìý | Ìý | 290,800,000 | Ìý | Ìý | 395,000,000 | ||||||||||||||||||
Long-term Debt | [4] | 289,900,000 | Ìý | Ìý | 289,900,000 | Ìý | Ìý | 393,700,000 | |||||||||||||||||
Debt Instrument, Unamortized Discount | $ 900,000 | Ìý | Ìý | $ 900,000 | Ìý | Ìý | $ 1,300,000 | ||||||||||||||||||
Imputed interest rate | 5.98% | Ìý | Ìý | 5.98% | Ìý | Ìý | 5.98% | ||||||||||||||||||
$500 Million 3.95% 2018 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Repurchased Face Amount | Ìý | $ 44,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 3.95% | Ìý | Ìý | 3.95% | Ìý | Ìý | 3.95% | ||||||||||||||||||
Cash Used to Repurchase Debt | $ 68,600,000 | Ìý | Ìý | $ 68,600,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Repurchase Discount | Ìý | 77.50% | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Exchanged | 124,800,000 | Ìý | Ìý | $ 124,800,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Fixed | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2018 | Ìý | 2018 | Ìý | ||||||||||||||||||
Total Face Amount | 500,000,000.0 | Ìý | Ìý | $ 500,000,000.0 | Ìý | Ìý | $ 500,000,000 | ||||||||||||||||||
Debt Instrument, Par Value | 311,200,000 | Ìý | Ìý | 311,200,000 | Ìý | Ìý | 480,000,000 | ||||||||||||||||||
Long-term Debt | [5] | 309,900,000 | Ìý | Ìý | 309,900,000 | Ìý | Ìý | 477,400,000 | |||||||||||||||||
Debt Instrument, Unamortized Discount | $ 1,300,000 | Ìý | Ìý | $ 1,300,000 | Ìý | Ìý | $ 2,600,000 | ||||||||||||||||||
Imputed interest rate | 6.36% | Ìý | Ìý | 6.36% | Ìý | Ìý | 5.17% | ||||||||||||||||||
Five hundred forty million Eight point two five Twenty twenty First Lien Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 8.25% | Ìý | Ìý | 8.25% | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Ìý | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2020 | Ìý | Ìý | Ìý | ||||||||||||||||||
Total Face Amount | $ 540,000,000 | Ìý | Ìý | $ 540,000,000 | Ìý | Ìý | $ 0 | ||||||||||||||||||
Debt Instrument, Par Value | 540,000,000 | Ìý | Ìý | 540,000,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Long-term Debt | 506,400,000 | Ìý | Ìý | 506,400,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Unamortized Discount | $ 33,600,000.0 | Ìý | Ìý | $ 33,600,000.0 | Ìý | Ìý | Ìý | ||||||||||||||||||
Imputed interest rate | 9.97% | Ìý | Ìý | 9.97% | Ìý | Ìý | Ìý | ||||||||||||||||||
Five hundred Forty-four Million Seven Point Seven Five Twenty Twenty Second Lien Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Stated interest rate | 7.75% | Ìý | Ìý | 7.75% | Ìý | Ìý | Ìý | ||||||||||||||||||
Discount Received in Debt Exchange of $400M 5.90% Notes | Ìý | $ 15,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Received in Debt Exchange of $400M 5.90% Notes | Ìý | 57,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Received in Debt Exchange of $800M 6.25% Notes | Ìý | 203,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Discount Received in Debt Exchange of $800M 6.25% Notes | Ìý | 55,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Discount Received in Debt Exchange of $500M 4.80% Notes | Ìý | 30,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Face Amount Received in Debt Exchange of $500M 4.80% Notes | Ìý | 112,900,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Discount Received in Debt Exchange of $700M 4.875% Notes | Ìý | 46,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt instrument, Face Amount Received in Debt Exchange of $700M 4.875% Notes | Ìý | 170,300,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Fixed | Ìý | Ìý | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2020 | Ìý | Ìý | Ìý | ||||||||||||||||||
Total Face Amount | $ 544,200,000 | Ìý | Ìý | $ 544,200,000 | Ìý | Ìý | 0 | ||||||||||||||||||
Debt Instrument, Par Value | 544,200,000 | Ìý | Ìý | 544,200,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Long-term Debt | 407,400,000 | Ìý | Ìý | 407,400,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument, Unamortized Discount | $ 136,800,000 | 147,000,000 | Ìý | $ 136,800,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Imputed interest rate | 15.55% | Ìý | Ìý | 15.55% | Ìý | Ìý | Ìý | ||||||||||||||||||
Revolving Credit Facility [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Type | Ìý | Ìý | Ìý | Variable | Ìý | Variable | Ìý | ||||||||||||||||||
Final Maturity | Ìý | Ìý | Ìý | 2020 | Ìý | 2017 | Ìý | ||||||||||||||||||
Debt Instrument, Par Value | $ 550,000,000 | Ìý | Ìý | $ 550,000,000 | Ìý | Ìý | 1,125,000,000 | ||||||||||||||||||
Credit facility, amount outstanding | 0 | [6] | Ìý | Ìý | 0 | [6] | Ìý | Ìý | 0 | [7] | |||||||||||||||
Revolving credit facility, borrowing capacity | 442,900,000 | Ìý | Ìý | 442,900,000 | Ìý | Ìý | Ìý | ||||||||||||||||||
Letters of credit outstanding | 187,300,000 | Ìý | Ìý | 187,300,000 | Ìý | Ìý | $ 149,500,000 | ||||||||||||||||||
Imputed interest rate | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 2.94% | ||||||||||||||||||
Credit facility remaining capacity | 255,600,000 | Ìý | Ìý | 255,600,000 | Ìý | Ìý | $ 975,500,000 | ||||||||||||||||||
Interest Rate Swap [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Fair Value Adjustment to Interest Rate Hedge | 2,400,000 | Ìý | Ìý | $ 2,400,000 | Ìý | Ìý | $ 2,800,000 | ||||||||||||||||||
Debt Repurchase [Member] | $700 Million 4.875% 2021 Senior Note [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | 5,300,000 | 20,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Repurchase [Member] | $500 million 4.80% 2020 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | 900,000 | 15,600,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Repurchase [Member] | $800 Million 6.25% 2040 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | Ìý | 15,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Repurchase [Member] | $400 Million 5.90% 2020 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | 18,000,000 | 300,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Repurchase [Member] | $500 Million 3.95% 2018 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | Ìý | 7,100,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Exchange of Debt [Member] | $700 Million 4.875% 2021 Senior Note [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | Ìý | 83,100,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Exchange of Debt [Member] | $500 million 4.80% 2020 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | Ìý | 54,600,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Exchange of Debt [Member] | $800 Million 6.25% 2040 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | Ìý | 107,300,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Exchange of Debt [Member] | $400 Million 5.90% 2020 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | Ìý | $ 24,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Exchange of Debt [Member] | $500 Million 3.95% 2018 Senior Notes [Member] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Debt Instrument [Line Items] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
Gain on extinguishment of debt | $ 54,900,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | ||||||||||||||||||
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