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Commitments and Contingencies (Details)
$ in Millions
1 Months Ended 6 Months Ended 12 Months Ended 90 Months Ended
Jul. 22, 2015
USD ($)
Mar. 02, 2015
USD ($)
Apr. 29, 2014
USD ($)
segment
Oct. 29, 2013
Mar. 09, 2012
USD ($)
Mar. 09, 2012
Feb. 28, 2015
USD ($)
Jan. 31, 2015
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2008
USD ($)
Jun. 30, 2015
USD ($)
Spectrum Investments                      
Payment to acquire certain wireless licenses and related assets                     $ 5,000
Accelerated period to meet Final Build-Out Requirement on failure to meet Interim Build-Out Requirement                 1 year    
Wireless                      
Spectrum Investments                      
Payment to acquire certain wireless licenses and related assets     $ 1,672             $ 712 5,000
Modified 700 MHz Interim Build-out Requirement (as a percent)       40.00%              
Modified 700 MHz Final Build-out Requirement (as a percent)       70.00%              
Accelerated period to meet Final Build-Out Requirement on failure to meet Interim Build-Out Requirement                 2 years    
Number of wireless spectrum licenses | segment     176                
Wireless | Minimum                      
Spectrum Investments                      
H Block Interim Build-out Requirement (as a percent)                 40.00%    
H Block Final Build-out Requirement (as a percent)                 75.00%    
AWS 3 Auction Member                      
Spectrum Investments                      
Refund amount received             $ 400        
DBSD North America and TerreStar Transactions | Wireless                      
Spectrum Investments                      
Purchase price         $ 2,860            
AWS-4 Interim Build-out Requirement (as a percent)                 40.00%    
AWS-4 Final Build-out Requirement (as a percent)                 70.00%    
Accelerated period to meet Final Build-Out Requirement on failure to meet Interim Build-Out Requirement                 1 year    
Ownership percentage           100.00%          
Northstar Spectrum And SNR Holdco                      
Spectrum Investments                      
Total investments                 $ 9,778   9,778
Northstar Spectrum And SNR Holdco | AWS 3 Auction Member                      
Spectrum Investments                      
Percentage of bidding credit                 25.00%    
Total investments   $ 9,778             $ 9,778   $ 9,778
Northstar Wireless or Northstar Spectrum                      
Spectrum Investments                      
Percentage of bidding credit                 25.00%    
Ownership percentage                 85.00%    
Northstar Wireless or Northstar Spectrum | Northstar Manager LLC                      
Spectrum Investments                      
Controlling interest owned by other companies                 15.00%    
Equity contribution   133                  
Northstar Wireless or Northstar Spectrum | Northstar Licenses Member                      
Spectrum Investments                      
Percentage of bidding credit                 25.00%    
Gross winning bids                 $ 7,845    
Net winning bid                 $ 5,884    
Percentage of bidding credit not eligible to receive if the draft order got approval 25.00%                    
Bidding credit value $ 1,961                    
Northstar Wireless or Northstar Spectrum | Northstar Licenses Member | American II Member                      
Spectrum Investments                      
Equity contributions as percentage of purchase price                 15.00%    
Commitment to make loan as percentage of purchase price                 85.00%    
Equity contribution               $ 750      
Loan receivable               5,001      
SNR Wireless or SNR Wireless Holdco                      
Spectrum Investments                      
Ownership percentage                 85.00%    
SNR Wireless or SNR Wireless Holdco | SNR Wireless Management LLC                      
Spectrum Investments                      
Controlling interest owned by other companies                 15.00%    
Equity contribution   $ 93                  
SNR Wireless or SNR Wireless Holdco | SNR Licenses Member                      
Spectrum Investments                      
Percentage of bidding credit                 25.00%    
Gross winning bids                 $ 5,482    
Net winning bid                 4,112    
Bid withdrawal payment                 $ 8    
Percentage of bidding credit not eligible to receive if the draft order got approval 25.00%                    
Bidding credit value $ 1,370                    
SNR Wireless or SNR Wireless Holdco | SNR Licenses Member | American III Member                      
Spectrum Investments                      
Equity contributions as percentage of purchase price                 15.00%    
Commitment to make loan as percentage of purchase price                 85.00%    
Equity contribution               524      
Loan receivable               $ 3,503