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FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Value And Fair Value Of Financial Instruments Disclosure) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | $ 2,304.2 | $ 2,192.6
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Long-term debt: |  |
Fair Value Adjustment to Interest Rate Hedge | 1.4 | 1.9
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 2,346.3 | 2,224.6
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Long-term debt: |  |
Fair Value Adjustment to Interest Rate Hedge | 1.4 | 1.9
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | $218.5 Million 8.00% 2020 1.5 Lien Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 |
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $540 Million 8.25% 2020 First Lien Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 | 506.3
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $544.2 Million 7.75% 2020 Second Lien Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 | 339.1
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $400 Million 5.90% 2020 Senior Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 88.6 | 224.5
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $500 Million 4.80% 2020 Senior Notes[Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 122.0 | 235.9
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $700 Million 4.875% 2021 Senior Notes[Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 138.0 | 308.2
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $1.075 Billion 5.75% 2025 Senior Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 1,047.2 | 0.0
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $800 Million 6.25% 2040 Senior Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 292.6 | 292.5
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $316 Million 1.5% 2025 Senior Notes [Domain] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 224.1 | 0.0
Senior Notes [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $400 Million 4.875% 2024 Senior Notes [Domain] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 390.3 | 0.0
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | $218.5 Million 8.00% 2020 1.5 Lien Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 | 229.5
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $540 Million 8.25% 2020 First Lien Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 | 595.0
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $544.2 Million 7.75% 2020 Second Lien Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 | 439.7
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $400 Million 5.90% 2020 Senior Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 88.0 | 219.6
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $500 Million 4.80% 2020 Senior Notes[Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 118.8 | 221.1
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $700 Million 4.875% 2021 Senior Notes[Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 130.8 | 283.1
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $1.075 Billion 5.75% 2025 Senior Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 1,029.3 | 0.0
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $800 Million 6.25% 2040 Senior Notes [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 227.1 | 234.7
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $316 Million 1.5% 2025 Senior Notes [Domain] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 352.9 | 0.0
Senior Notes [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | $400 Million 4.875% 2024 Senior Notes [Domain] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 398.0 | 0.0
Line of Credit [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | ABL Facility [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | 0.0 | 0.0
Line of Credit [Member] | Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | ABL Facility [Member] |  |
Long-term debt: |  |
Long-term Debt, Fair Value | $ 0.0 | $ 0.0

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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