| Document and Entity Information | May 26, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | VIASAT INC |
| Amendment Flag | true |
| Entity Central Index Key | 0000797721 |
| Document Type | 8-K/A |
| Document Period End Date | May 26, 2023 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 000-21767 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.0001 per share |
| Trading Symbol | VSAT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | On June 2, 2023, Viasat, Inc., a Delaware corporation (“Viasat”), filed with the Securities and Exchange Commission a Current Report on Form 8-K (the “Initial Form 8-K”) disclosing that on May 30, 2023, Viasat purchased all of the issued and outstanding shares of Connect Topco Limited, a private company limited by shares and incorporated in Guernsey (“Inmarsat”), pursuant to the previously announced Share Purchase Agreement, dated as of November 8, 2021, by and among Viasat, the shareholders of Inmarsat and the other parties thereto, in exchange for (i) cash consideration equal to $550.7 million, subject to adjustments, and (ii) approximately 46.36 million unregistered shares of common stock, par value $0.0001 per share, of Viasat, upon the terms and subject to the conditions set forth therein. In the Initial Form 8-K, Viasat stated its intention to file the financial statements and pro forma financial information required by parts (a) and (b) of Item 9.01 of Form 8-K no later than 71 days following the date on which the Initial Form 8-K was required to be filed pursuant to Item 2.01. Pursuant to the instructions to Item 9.01 of Form 8-K, this Current Report on Form 8-K/A amends and supplements the Initial 8-K in order to provide the required financial statements and pro forma financial information. |
