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Document and Entity Information - USD ($)
 12 Months Ended
Mar. 31, 2024
May 10, 2024
Sep. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Mar. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Entity Registrant Name VIASAT, INC.    
Entity Central Index Key 0000797721    
Current Fiscal Year End Date --03-31    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Document Financial Statement Error Correction [Flag] false    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   125,860,925  
Entity Public Float     $ 2,231,985,984
Entity File Number 000-21767    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 33-0174996    
Entity Address, Address Line One 6155 El Camino Real    
Entity Address, City or Town Carlsbad    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92009    
City Area Code 760    
Local Phone Number 476-2200    
Document Annual Report true    
Document Transition Report false    
Title of 12(b) Security Common Stock, par value $0.0001 per share    
Trading Symbol VSAT    
Security Exchange Name NASDAQ    
Documents Incorporated by Reference

Portions of the registrant’s definitive Proxy Statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A in connection with its 2024 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K where indicated. Such Proxy Statement will be filed with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year ended March 31, 2024.

   
Auditor Name PricewaterhouseCoopers LLP    
Auditor Firm ID 238    
Auditor Location San Diego, California