Acquisition - Summary of Identifiable Intangible Assets Amortized on a Straight Line Basis (Details) - USD ($) $ in Thousands		6 Months Ended
	May 30, 2023	Sep. 30, 2023
Inmarsat Holdings [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 2,680,000
Weighted Average Estimated Useful Life	10 years
Orbital Slots And Spectrum Assets [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		12 years
Orbital Slots And Spectrum Assets [Member] | Inmarsat Holdings [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 1,010,000
Weighted Average Estimated Useful Life	12 years
Customer Relationships [Member] | Inmarsat Holdings [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 1,155,000
Weighted Average Estimated Useful Life	11 years
Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		7 years
Technology [Member] | Inmarsat Holdings [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 105,000
Weighted Average Estimated Useful Life	7 years
Trade Name [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		8 years
Trade Name [Member] | Inmarsat Holdings [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 90,000
Weighted Average Estimated Useful Life	8 years
Other [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life		5 years
Other [Member] | Inmarsat Holdings [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 320,000
Weighted Average Estimated Useful Life	5 years