Commitments and Contingencies - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) satellite
Loss Contingencies [Line Items]
Number of replacement satellites | satellite	2
Surety Bond
Loss Contingencies [Line Items]
Estimate of possible loss	$ 45
Royalty Arrangement
Loss Contingencies [Line Items]
Prepayments made of minimum guarantee payments	5
Future minimum guarantee payments	576
Other commitment, to be paid, year one	$ 172
Minimum
Loss Contingencies [Line Items]
Operating lease obligations, term (years)	1 year
Maximum
Loss Contingencies [Line Items]
Operating lease obligations, term (years)	15 years
XM-5, FM-5, FM-6, XM-3, and XM-4
Loss Contingencies [Line Items]
Operating performance over design life	15 years
XM-4
Loss Contingencies [Line Items]
Period beyond expected operating performance of design life for XM-4	5 years
XM-4 | Maximum
Loss Contingencies [Line Items]
Additional payments required if XM-4 continues to operate above baseline specifications	$ 10