Contingencies (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Dec. 31, 2019	Jun. 30, 2020
License Fee Dispute
Other Commitments [Line Items]
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	79.6
Hughes Network Systems | License Fee Dispute | Additional License Fee
Other Commitments [Line Items]
Loss contingency accrual		3.8
Hughes Network Systems | License Fee Dispute | Penalties
Other Commitments [Line Items]
Loss contingency accrual		3.9
Hughes Network Systems | License Fee Dispute | Interest and Interest on Penalties
Other Commitments [Line Items]
Loss contingency accrual		$ 72.0