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           Debt and Debt-Related Parties Schedule of Maturities of Long-term Debt (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Dec. 31, 2011 
         | 
      
|---|---|
| Debt Instrument [Line Items] | |
| Total | $ 3,000,423 | 
| 2012 | 502,630 | 
| 2013 to 2014 | 550,000 | 
| 2015 to 2016 | 1,665,500 | 
| Thereafter | 282,293 | 
| 
           Senior Notes [Member] 
         | 
        |
| Debt Instrument [Line Items] | |
| Total | 2,215,500 | 
| 2012 | 0 | 
| 2013 to 2014 | 550,000 | 
| 2015 to 2016 | 1,665,500 | 
| Thereafter | 0 | 
| 
           Loans Payable [Member] | 2007 Term Loan 
         | 
        |
| Debt Instrument [Line Items] | |
| Total | 298,000 | 
| 2012 | 298,000 | 
| 2013 to 2014 | 0 | 
| 2015 to 2016 | 0 | 
| Thereafter | 0 | 
| 
           Convertible Loans Payable [Member] | 2008 Loans [Member] 
         | 
        |
| Debt Instrument [Line Items] | |
| Total | 282,293 | 
| 2012 | 0 | 
| 2013 to 2014 | 0 | 
| 2015 to 2016 | 0 | 
| Thereafter | 282,293 | 
| 
           Convertible Senior Unsecured Notes [Member] 
         | 
        |
| Debt Instrument [Line Items] | |
| Total | 204,630 | 
| 2012 | 204,630 | 
| 2013 to 2014 | 0 | 
| 2015 to 2016 | 0 | 
| Thereafter | $ 0 | 
| X | ||||||||||
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- Definition 
          Long term debt (including related parties), maturities, repayments of principal after year five No definition available. 
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- Definition 
          Total long term debt (including related parties) No definition available. 
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- Details 
          
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- Definition 
          Amount of long-term debt maturing in years four and five following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Amount of long-term debt maturing in years two and three following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Amount of long-term debt maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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