| 
           Subscriber Revenue (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        12 Months Ended | ||
|---|---|---|---|
| 
           Dec. 31, 2011 
         | 
        
           Dec. 31, 2010 
         | 
        
           Dec. 31, 2009 
         | 
      |
| Subscriber Revenue | |||
| Subscription fees | $ 2,581,433 | $ 2,398,146 | $ 2,265,666 | 
| Activation fees | 13,981 | 16,028 | 21,837 | 
| Total subscriber revenue | $ 2,595,414 | $ 2,414,174 | $ 2,287,503 | 
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- Definition 
          Activation fees. No definition available. 
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- Details 
          
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- Definition 
          Subscription fees. No definition available. 
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- Definition 
          Revenue from sale of subscriptions (such as subscriptions to a magazine or newspaper). Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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