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Related Party Transactions - Other (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Hughes Systique Corporation          
Related Party Transaction [Line Items]          
Ownership interest in related party (as a percent)     43.00%    
Ownership percentage by related party     25.00%    
TerreStar Solutions, Inc.          
Related Party Transaction [Line Items]          
Ownership percentage in equity method investment (at least) 15.00%   15.00%    
Revenue from related parties $ 700,000 $ 2,000,000.0 $ 3,800,000 $ 10,200,000  
Due to related parties 0.00   0.00   $ 2,700,000
Global IP Revenue          
Related Party Transaction [Line Items]          
Due to related parties 7,500,000   7,500,000    
Maxar Technologies Inc.          
Related Party Transaction [Line Items]          
Aggregate costs payable 1,000,000.0 $ 12,100,000 9,700,000 $ 78,900,000  
Trade accounts payable - DISH Network $ 0   $ 0   $ 0