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Earnings/(Loss) Per Share Details Textual (Details) (USD $)
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3 Months Ended | |
|---|---|---|
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Mar. 31, 2013
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Dec. 31, 2012
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| Debt Instrument [Line Items] | ||
| Senior, senior subordinated, convertible senior notes | $ 881,219,000 | $ 722,797,000 |
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1.875% convertible senior notes due 2032 [Member]
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| Debt Instrument [Line Items] | ||
| Senior, senior subordinated, convertible senior notes | 126,500,000 | 126,500,000 |
| Debt instrument, interest rate, stated percentage | 1.875% | |
| Debt instrument, convertible, conversion ratio | 17.1985 | |
| Conversion principal amount | $ 1,000 |
| X | ||||||||||
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- Definition
Increment of principal amount where the conversion rate is applied. No definition available.
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| X | ||||||||||
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- Definition
The ratio applied to the debt for purposes of determining the number of shares of the equity security into which the debt will be converted. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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