<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2026"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
      xlink:type="simple"/>
    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000797721</identifier>
        </entity>
        <period>
            <startDate>2026-05-13</startDate>
            <endDate>2026-05-13</endDate>
        </period>
    </context>
    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000797721</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
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        <period>
            <startDate>2026-05-13</startDate>
            <endDate>2026-05-13</endDate>
        </period>
    </context>
    <context id="offrl_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000797721</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>2</dei:lineNo>
                </xbrldi:typedMember>
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        </entity>
        <period>
            <startDate>2026-05-13</startDate>
            <endDate>2026-05-13</endDate>
        </period>
    </context>
    <context id="offrl_3">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000797721</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>3</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-13</startDate>
            <endDate>2026-05-13</endDate>
        </period>
    </context>
    <context id="offrl_4">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000797721</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>4</dei:lineNo>
                </xbrldi:typedMember>
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        </entity>
        <period>
            <startDate>2026-05-13</startDate>
            <endDate>2026-05-13</endDate>
        </period>
    </context>
    <context id="offrl_5">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000797721</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>5</dei:lineNo>
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        </entity>
        <period>
            <startDate>2026-05-13</startDate>
            <endDate>2026-05-13</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-420">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-421">S-3ASR</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-422">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-423">0000797721</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-424">VIASAT INC</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="rc" id="hiddenrcCombinedProspectusTableNa">N/A</ffd:CombinedProspectusTableNa>
    <ffd:FormTp contextRef="rc" id="ixv-488">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-489">VIASAT INC</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="offrl_1" id="ixv-490">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-491">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-492">Debt Securities</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_1" id="ixv-493">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_1"
      decimals="7"
      id="ixv-494"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_2" id="ixv-495">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_2" id="ixv-496">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_2" id="ixv-497">Common Stock, par value 0.0001 per share</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_2" id="ixv-498">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_2"
      decimals="7"
      id="ixv-499"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_3" id="ixv-500">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_3" id="ixv-501">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_3" id="ixv-502">Preferred Stock, par value 0.0001 per share</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_3" id="ixv-503">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_3"
      decimals="7"
      id="ixv-504"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_4" id="ixv-505">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_4" id="ixv-506">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_4" id="ixv-507">Depositary Shares</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_4" id="ixv-508">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_4"
      decimals="7"
      id="ixv-509"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_5" id="ixv-510">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_5" id="ixv-511">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_5" id="ixv-512">Warrants</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_5" id="ixv-513">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_5"
      decimals="7"
      id="ixv-514"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-515" unitRef="USD">0.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-516" unitRef="USD">0.00</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="rc" decimals="2" id="ixv-517" unitRef="USD">0.00</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-518" unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-519" unitRef="USD">0.00</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-520">(1) An unspecified number of securities or aggregate principal amount, as applicable, is being registered as may from time to time be offered at unspecified prices and, in addition, an unspecified number of additional shares of common stock is being registered as may be issued from time to time upon conversion of any debt securities or shares of preferred stock that are convertible into common stock or exercise of warrants that are exercisable for common stock or pursuant to any anti-dilution adjustments with respect to any such convertible debt securities, shares of preferred stock or warrants. (2) The proposed maximum offering prices per security and aggregate offering prices per class of securities will be determined from time to time by the registrant in connection with the issuance by the registrant of the securities registered hereunder and is not specified as to each class of security. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. (3) Pursuant to Form S-3 Instruction 2.A.iii.c. of the Instructions to the Calculation of Filing Fee Tables and Related Disclosure, the registrant elects to pay all of the registration fee on a deferred basis in reliance upon Rules 456(b) and 457(r) under the Securities Act of 1933, as amended (the "Securities Act").</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_2" id="ixv-521">(1) An unspecified number of securities or aggregate principal amount, as applicable, is being registered as may from time to time be offered at unspecified prices and, in addition, an unspecified number of additional shares of common stock is being registered as may be issued from time to time upon conversion of any debt securities or shares of preferred stock that are convertible into common stock or exercise of warrants that are exercisable for common stock or pursuant to any anti-dilution adjustments with respect to any such convertible debt securities, shares of preferred stock or warrants. (2) The proposed maximum offering prices per security and aggregate offering prices per class of securities will be determined from time to time by the registrant in connection with the issuance by the registrant of the securities registered hereunder and is not specified as to each class of security. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. (3) Pursuant to Form S-3 Instruction 2.A.iii.c. of the Instructions to the Calculation of Filing Fee Tables and Related Disclosure, the registrant elects to pay all of the registration fee on a deferred basis in reliance upon Rules 456(b) and 457(r) under the Securities Act of 1933, as amended (the "Securities Act"). (4) Includes rights to acquire common stock or preferred stock of the Company under any stockholder rights plan then in effect, if applicable under the terms of any such plan. (5) Pursuant to Rule 416 under the Securities Act, this registration statement shall also cover any additional shares of common stock as may be issued in connection with stock splits, stock dividends or similar transactions. </ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_3" id="ixv-522">(1) An unspecified number of securities or aggregate principal amount, as applicable, is being registered as may from time to time be offered at unspecified prices and, in addition, an unspecified number of additional shares of common stock is being registered as may be issued from time to time upon conversion of any debt securities or shares of preferred stock that are convertible into common stock or exercise of warrants that are exercisable for common stock or pursuant to any anti-dilution adjustments with respect to any such convertible debt securities, shares of preferred stock or warrants. (2) The proposed maximum offering prices per security and aggregate offering prices per class of securities will be determined from time to time by the registrant in connection with the issuance by the registrant of the securities registered hereunder and is not specified as to each class of security. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. (3) Pursuant to Form S-3 Instruction 2.A.iii.c. of the Instructions to the Calculation of Filing Fee Tables and Related Disclosure, the registrant elects to pay all of the registration fee on a deferred basis in reliance upon Rules 456(b) and 457(r) under the Securities Act of 1933, as amended (the "Securities Act"). (4) Includes rights to acquire common stock or preferred stock of the Company under any stockholder rights plan then in effect, if applicable under the terms of any such plan. </ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_4" id="ixv-523">(1) An unspecified number of securities or aggregate principal amount, as applicable, is being registered as may from time to time be offered at unspecified prices and, in addition, an unspecified number of additional shares of common stock is being registered as may be issued from time to time upon conversion of any debt securities or shares of preferred stock that are convertible into common stock or exercise of warrants that are exercisable for common stock or pursuant to any anti-dilution adjustments with respect to any such convertible debt securities, shares of preferred stock or warrants. (2) The proposed maximum offering prices per security and aggregate offering prices per class of securities will be determined from time to time by the registrant in connection with the issuance by the registrant of the securities registered hereunder and is not specified as to each class of security. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. (3) Pursuant to Form S-3 Instruction 2.A.iii.c. of the Instructions to the Calculation of Filing Fee Tables and Related Disclosure, the registrant elects to pay all of the registration fee on a deferred basis in reliance upon Rules 456(b) and 457(r) under the Securities Act of 1933, as amended (the "Securities Act"). </ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_5" id="ixv-524">(1) An unspecified number of securities or aggregate principal amount, as applicable, is being registered as may from time to time be offered at unspecified prices and, in addition, an unspecified number of additional shares of common stock is being registered as may be issued from time to time upon conversion of any debt securities or shares of preferred stock that are convertible into common stock or exercise of warrants that are exercisable for common stock or pursuant to any anti-dilution adjustments with respect to any such convertible debt securities, shares of preferred stock or warrants. (2) The proposed maximum offering prices per security and aggregate offering prices per class of securities will be determined from time to time by the registrant in connection with the issuance by the registrant of the securities registered hereunder and is not specified as to each class of security. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. (3) Pursuant to Form S-3 Instruction 2.A.iii.c. of the Instructions to the Calculation of Filing Fee Tables and Related Disclosure, the registrant elects to pay all of the registration fee on a deferred basis in reliance upon Rules 456(b) and 457(r) under the Securities Act of 1933, as amended (the "Securities Act"). </ffd:OfferingNote>
</xbrl>
