Property and Equipment - Narrative (Details) $ in Millions	Jun. 30, 2020 USD ($) satellite mi	Dec. 31, 2019 USD ($)
Satellites
Property, Plant and Equipment [Line Items]
Number of satellites in geostationary orbit, utilized by reporting entity	10
Satellites in geosynchronous orbit length above equator | mi	22,300
Satellites, Owned
Property, Plant and Equipment [Line Items]
Number of satellites in geostationary orbit, utilized by reporting entity	7
Satellites, Leased
Property, Plant and Equipment [Line Items]
Finance lease, right-of-use-asset, number of units	3
Satellite-related obligations
Property, Plant and Equipment [Line Items]
Satellite-related obligations | $	$ 385.1	$ 419.0
Level 2
Property, Plant and Equipment [Line Items]
In-orbit incentive obligations | $	$ 55.9	$ 57.0