XML 71 R71.htm IDEA: XBRL DOCUMENT
v3.20.1

Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions | Mar. 31, 2020 | Mar. 31, 2019
--- | --- | ---
Compensation And Retirement Disclosure [Abstract] |  |
Number of common stock that would be issued based on year-end common stock closing price | 708,104 |
Discretionary contributions accrued by the Company under voluntary deferred compensation plan under Section 401(k) of the Internal Revenue Code | $ 25.4 | $ 22.9

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Accrued amount of discretionary contributions, that is estimated and will be made by an employer, to a defined contribution plan as of the balance sheet date. + References No definition available. + Details
Name: | vsat_DefinedContributionPlanEmployerDiscretionaryContributionAmountAccrued
Namespace Prefix: | vsat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The estimated number of shares that would be issued based on the year-end common stock closing price in order to settle the Company's discretionary contributions under a defined contribution plan under Section 401(k). + References No definition available. + Details
Name: | vsat_EstimatedNumberOfSharesToBeIssuedToSettleCertainAccruedEmployeeCompensationLiabilities
Namespace Prefix: | vsat_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant