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Long-Term Obligations ( Schedule of Carrying Amount of Senior Notes) (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
|
|---|---|---|
| Debt Instrument [Line Items] | ||
| Total debt, net | $ 7,605,734 | $ 3,477,564 |
| Less current portion (May 2011 convertible senior notes) | 0 | 638,991 |
| Total long-term debt, net | 7,605,734 | 2,838,573 |
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May 2011 Convertible Senior Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 0 | 638,991 |
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May 2013 Convertible Senior Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 607,036 | 576,884 |
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May 2014 Convertible Senior Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 1,181,525 | 1,153,805 |
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May 2016 Convertible Senior Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 1,132,293 | 1,107,884 |
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December 2014 Senior Unsecured Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 749,078 | 0 |
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December 2016 Senior Unsecured Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 698,864 | 0 |
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April 2021 Senior Unsecured Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 992,066 | 0 |
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December 2021 Senior Unsecured Notes [Member]
|
||
| Debt Instrument [Line Items] | ||
| Total debt, net | 1,247,138 | 0 |
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December 2041 Senior Unsecured Notes [Member]
|
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| Debt Instrument [Line Items] | ||
| Total debt, net | $ 997,734 | $ 0 |