FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Value And Fair Value Of Financial Instruments Disclosure) (Details) - USD ($) |
Sep. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | $ 3,448,200,000 | $ 3,980,000,000 | ||||||||||||||
Long-term debt: | ||||||||||||||||
Long-term Debt | 2,721,600,000 | 2,843,300,000 | ||||||||||||||
Total long-term debt, carrying value | 2,721,600,000 | 2,843,300,000 | ||||||||||||||
$700 Million 4.875% 2021 Senior Note [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | 700,000,000 | 700,000,000 | ||||||||||||||
Long-term debt: | ||||||||||||||||
Long-term Debt | [1] | 412,300,000 | 689,500,000 | |||||||||||||
Senior Notes - $1.3 Billion [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | 1,300,000,000.0 | 1,300,000,000.0 | ||||||||||||||
$400 Million 5.90% 2020 Senior Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | 400,000,000 | 400,000,000 | ||||||||||||||
Long-term debt: | ||||||||||||||||
Long-term Debt | [2] | 289,900,000 | 393,700,000 | |||||||||||||
$500 Million 3.95% 2018 Senior Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | 500,000,000.0 | 500,000,000 | ||||||||||||||
Long-term debt: | ||||||||||||||||
Long-term Debt | [3] | 309,900,000 | 477,400,000 | |||||||||||||
Five hundred forty million Eight point two five Twenty twenty First Lien Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | 540,000,000 | 0 | ||||||||||||||
Long-term debt: | ||||||||||||||||
Long-term Debt | 506,400,000 | |||||||||||||||
Five hundred Forty-four Million Seven Point Seven Five Twenty Twenty Second Lien Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Debt Instrument, Face Amount | 544,200,000 | 0 | ||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | $ 397,200,000 | |||||||||||||||
Long-term Debt | 407,400,000 | |||||||||||||||
Revolving Credit Facility [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Revolving loan, carrying value | 0 | [4] | 0 | [5] | ||||||||||||
Interest Rate Swap [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Fair Value Adjustment to Interest Rate Hedge | 2,400,000 | 2,800,000 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Total long-term debt, fair value | 1,318,000,000 | 1,614,200,000 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | $700 Million 4.875% 2021 Senior Note [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | 115,400,000 | 367,300,000 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | Senior Notes - $1.3 Billion [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | 242,400,000 | 704,000,000 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | $400 Million 5.90% 2020 Senior Notes [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | 99,600,000 | 228,100,000 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | $500 Million 3.95% 2018 Senior Notes [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | 162,600,000 | 312,000,000 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | Five hundred forty million Eight point two five Twenty twenty First Lien Notes [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | 477,900,000 | 0 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | Five hundred Forty-four Million Seven Point Seven Five Twenty Twenty Second Lien Notes [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Debt Instrument, Fair Value Disclosure | 217,700,000 | $ 397,200,000 | 0 | |||||||||||||
Fair Value, Inputs, Level 2 [Member] | Revolving Credit Facility [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Revolving loan, fair value | 0 | 0 | ||||||||||||||
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Fair Value Adjustment to Interest Rate Hedge | 2,400,000 | 2,800,000 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Total long-term debt, carrying value | 2,721,600,000 | 2,843,300,000 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | $700 Million 4.875% 2021 Senior Note [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 412,300,000 | 689,500,000 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Senior Notes - $1.3 Billion [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 793,300,000 | 1,279,900,000 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | $400 Million 5.90% 2020 Senior Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 289,900,000 | 393,700,000 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | $500 Million 3.95% 2018 Senior Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 309,900,000 | 477,400,000 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Five hundred forty million Eight point two five Twenty twenty First Lien Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 506,400,000 | 0 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Five hundred Forty-four Million Seven Point Seven Five Twenty Twenty Second Lien Notes [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 407,400,000 | 0 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Revolving Credit Facility [Member] | ||||||||||||||||
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||||||
Senior Notes, Noncurrent | 0 | 0 | ||||||||||||||
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | ||||||||||||||||
Long-term debt: | ||||||||||||||||
Fair Value Adjustment to Interest Rate Hedge | $ 2,400,000 | $ 2,800,000 | ||||||||||||||
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