Related-Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,123,767	$ 1,128,539	$ 3,372,489	$ 3,133,745
Amount receivable	648,962		648,962		$ 678,210
Navarino UK And JSAT Mobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	16,200	17,300	50,000	42,600
Cash received	16,200	$ 18,000	52,400	$ 43,100
Amount receivable	$ 9,400		$ 9,400		$ 13,200