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FAIR VALUE MEASUREMENTS (Debt Fair Value) (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2013
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Dec. 31, 2012
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7% Senior Notes Due 2020 [Member]
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| Debt Fair Value [Line Items] | ||
| Interest rate, stated percentage (in hundredths) | 7.00% | 7.00% |
| Estimated fair values of senior notes | $ 240.8 | $ 236.3 |
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8.125% Senior Notes due 2018 [Member]
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| Debt Fair Value [Line Items] | ||
| Interest rate, stated percentage (in hundredths) | 8.125% | 8.125% |
| Estimated fair values of senior notes | 272.0 | 273.4 |
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2.875% Convertible Senior Notes due 2027 [Member]
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| Debt Fair Value [Line Items] | ||
| Interest rate, stated percentage (in hundredths) | 2.875% | 2.875% |
| Estimated fair values of convertible senior notes | 221.2 | 219.4 |
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Fixed Rate Debt With Noncontrolling Interest Partner [Member]
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| Fair value, estimate not practicable [Abstract] | ||
| Face amount of debt | $ 23.4 | $ 24.5 |
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- Details
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- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity 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. Fair value of convertible debt at the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
This item represents a financial instrument (as defined) for which it is not practicable to estimate fair value. Such disclosure may be for an individual financial instrument or a class of financial instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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