Acquisition - Summary of Purchase Price Allocation of Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	May 30, 2023	Mar. 31, 2023
Business Acquisition [Line Items]
Goodwill	$ 1,613,706		$ 158,542
Inmarsat Holdings [Member]
Business Acquisition [Line Items]
Current assets		$ 651,679
Property, equipment and satellites		4,164,139
Identifiable intangible assets		2,769,045
Other assets		411,931
Total assets acquired		7,996,794
Current liabilities		(592,237)
Long-term debt, excluding short-term portion		(3,519,774)
Other long-term liabilities		(2,659,376)
Total liabilities assumed		(6,771,387)
Goodwill		1,453,685
Total consideration transferred		$ 2,679,092