Related-Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Mar. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 1,157,045	$ 1,123,767	$ 3,468,992	$ 3,372,489
Amount receivable	749,395		749,395		$ 699,552
Navarino UK And JSAT Mobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	15,500	16,200	47,900	50,000
Cash received	15,600	$ 16,200	48,000	$ 52,400
Amount receivable	$ 8,400		$ 8,400		$ 8,500