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Contingencies (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended
Sep. 01, 2020
Dec. 31, 2019
Sep. 30, 2020
License Fee Dispute      
Other Commitments [Line Items]      
Payment schedule term 10 years    
Percentage of legally payable dues 10.00%    
Payments for written assessments     $ 2.9
Hughes Network Systems | Elbit      
Other Commitments [Line Items]      
Amount paid to other party   $ 33.0  
Hughes Network Systems | License Fee Dispute      
Other Commitments [Line Items]      
Loss contingency accrual   $ 80.2 81.6
Hughes Network Systems | License Fee Dispute | Additional License Fee      
Other Commitments [Line Items]      
Loss contingency accrual     3.9
Hughes Network Systems | License Fee Dispute | Penalties      
Other Commitments [Line Items]      
Loss contingency accrual     4.0
Hughes Network Systems | License Fee Dispute | Interest and Interest on Penalties      
Other Commitments [Line Items]      
Loss contingency accrual     $ 73.8