Acquisitions - Summary of Purchase Price Allocation of Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	May 30, 2023	Mar. 31, 2023	Apr. 30, 2021
Business Acquisition [Line Items]
Goodwill	$ 1,621,763		$ 158,542
EBI Step Acquisition [Member]
Business Acquisition [Line Items]
Current assets				$ 154,207
Property, equipment and satellites				109,028
Identifiable intangible assets				26,574
Other assets				795
Total assets acquired				290,604
Total liabilities assumed				(5,914)
Goodwill				42,662
Total consideration transferred				327,352
RigNet, Inc [Member]
Business Acquisition [Line Items]
Current assets				88,166
Property, equipment and satellites				63,191
Identifiable intangible assets				221,540
Other assets				13,350
Total assets acquired				386,247
Current liabilities				(66,006)
Other long-term liabilities				(31,433)
Total liabilities assumed				(97,439)
Goodwill				29,132
Total consideration transferred				$ 317,940
Inmarsat Holdings [Member]
Business Acquisition [Line Items]
Current assets		$ 641,893
Property, equipment and satellites		4,363,049
Identifiable intangible assets		2,570,000
Other assets		388,745
Total assets acquired		7,963,687
Current liabilities		(598,296)
Long-term debt, excluding short-term portion		(3,519,774)
Other long-term liabilities		(2,629,406)
Total liabilities assumed		(6,747,476)
Goodwill		1,462,881
Total consideration transferred		$ 2,679,092