Senior Notes and Other Long-Term Debt - Viasat Revolving Credit Facility (Detail)	12 Months Ended
	Mar. 31, 2024 USD ($)
Letter of Credit [Member]
Debt Instrument [Line Items]
Credit Facility maximum borrowing capacity	$ 150,000,000
Standby letters of credit outstanding amount	56,000,000
Viasat Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility maximum borrowing capacity	$ 647,500,000
Maturity date	Aug. 24, 2028
Outstanding borrowings under the Credit Facility	$ 0
Borrowing availability under the Credit Facility	$ 591,500,000
Credit Facility interest rate description	Borrowings under the Viasat Revolving Credit Facility bear interest, at the Company’s option, at either (1) the highest of the federal funds rate plus 0.50%, forward-looking term SOFR (as defined in the definitive credit agreement governing the Viasat Revolving Credit Facility) for an interest period of one month plus 1.00%, or the administrative agent’s prime rate as announced from time to time, or (2) forward-looking term SOFR (not to be less than 0.00% per annum), plus, in the case of each of (1) and (2), an applicable margin that is based on the Company’s total leverage ratio.
Credit facility description	The Viasat Revolving Credit Facility contains financial covenants regarding a maximum total leverage ratio and a minimum interest coverage ratio. In addition, the Viasat Revolving Credit Facility contains covenants that restrict, among other things, the Company’s ability to incur additional debt, grant liens, sell assets, make investments and acquisitions, make capital expenditures, pay dividends and make certain other restricted payments. The Company was in compliance with its financial covenants under the Viasat Revolving Credit Facility as of March 31, 2024.