Acquisitions - Summary of Proforma Financial Information (Details) - RigNet, Inc [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Total revenues	$ 719,717	$ 622,606	$ 2,097,548	$ 1,809,485
Net (loss) income attributable to Viasat, Inc.	$ (6,613)	$ (4,308)	$ 9,222	$ (47,628)