v2.4.0.6
Document and Entity Information (USD $)
9 Months Ended
Dec. 31, 2010
Feb. 01, 2011
Oct. 02, 2009
Document and Entity Information [Abstract]      
Entity Registrant Name VIASAT INC    
Entity Central Index Key 0000797721    
Document Type 10-Q    
Document Period End Date Dec. 31, 2010    
Amendment Flag false    
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus Q3    
Current Fiscal Year End Date --04-01    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 788,872,693
Entity Common Stock, Shares Outstanding   41,598,623