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Marketable Investment Securities, Restricted Cash and Other Investment Securities (Details 5) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Fair value of marketable securities    
Debt and equity security $ 1,606,915 $ 2,481,022
Debt security 1,431,745 2,299,705
Debt security 109,327 [1] 119,121 [1]
Investment in DBSD North America 1,297,614 102,591
7.5% Convertible Senior Secured Notes due 2009
   
Fair value of marketable securities    
Investment in DBSD North America 839,000 56,000
Current marketable investment securities - VRDNs
   
Fair value of marketable securities    
Debt security 160,555 1,334,081
Debt security 160,555 1,334,081
ARS and MBS, noncurrent
   
Fair value of marketable securities    
Debt security 109,000  
Other (including restricted)
   
Fair value of marketable securities    
Debt security 994,021 832,798
Equity securities
   
Fair value of marketable securities    
Equity security 343,012 195,022
Fair value measurements on recurring basis | Total
   
Fair value of marketable securities    
Cash Equivalents (including restricted) 397,777 569,558
Debt and equity security 1,606,915 2,481,022
Investment in DBSD North America 839,009 [2] 55,823 [2]
Total marketable investment securities (including DBSD North America) 2,445,924 2,536,845
Fair value measurements on recurring basis | Total | Current marketable investment securities - VRDNs
   
Fair value of marketable securities    
Debt security 160,555 1,334,081
Fair value measurements on recurring basis | Total | ARS and MBS, noncurrent
   
Fair value of marketable securities    
Debt security 109,327 119,121
Fair value measurements on recurring basis | Total | Other (including restricted)
   
Fair value of marketable securities    
Debt security 994,021 832,798
Fair value measurements on recurring basis | Total | Equity securities
   
Fair value of marketable securities    
Equity security 343,012 195,022
Fair value measurements on recurring basis | Level 1
   
Fair value of marketable securities    
Cash Equivalents (including restricted) 46,371 92,662
Debt and equity security 343,012 216,857
Total marketable investment securities (including DBSD North America) 343,012 216,857
Fair value measurements on recurring basis | Level 1 | Other (including restricted)
   
Fair value of marketable securities    
Debt security   21,835
Fair value measurements on recurring basis | Level 1 | Equity securities
   
Fair value of marketable securities    
Equity security 343,012 195,022
Fair value measurements on recurring basis | Level 2
   
Fair value of marketable securities    
Cash Equivalents (including restricted) 351,406 476,896
Debt and equity security 1,157,988 2,150,995
Total marketable investment securities (including DBSD North America) 1,157,988 2,150,995
Fair value measurements on recurring basis | Level 2 | Current marketable investment securities - VRDNs
   
Fair value of marketable securities    
Debt security 160,555 1,334,081
Fair value measurements on recurring basis | Level 2 | ARS and MBS, noncurrent
   
Fair value of marketable securities    
Debt security 3,412 6,031
Fair value measurements on recurring basis | Level 2 | Other (including restricted)
   
Fair value of marketable securities    
Debt security 994,021 810,883
Fair value measurements on recurring basis | Level 3
   
Fair value of marketable securities    
Debt and equity security 105,915 113,170
Investment in DBSD North America 839,009 [2] 55,823 [2]
Total marketable investment securities (including DBSD North America) 944,924 168,993
Fair value measurements on recurring basis | Level 3 | ARS and MBS, noncurrent
   
Fair value of marketable securities    
Debt security 105,915 113,090
Fair value measurements on recurring basis | Level 3 | Other (including restricted)
   
Fair value of marketable securities    
Debt security   $ 80
[1] Noncurrent marketable investment securities - auction rate securities ("ARS"), mortgage backed securities ("MBS") and other investment securities are included in "Marketable and other investment securities" on our Consolidated Balance Sheets.
[2] Of our total investment in DBSD North America of $1.298 billion as of December 31, 2011 and $103 million as of December 31, 2010, only our $839 million and $56 million, respectively, investment in the 7.5% Convertible Senior Secured Notes due 2009 are accounted for as available-for-sale investments.