XML 75 R75.htm IDEA: XBRL DOCUMENT
v3.20.1

Product Warranty - Additional Information (Detail) | 12 Months Ended
--- | ---
Mar. 31, 2020
Product Warranties Disclosures [Abstract] |
Maximum warranty periods provided on limited warranty | 5 years

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

X
- Definition Maximum warranty periods provided on limited warranties. + References No definition available. + Details
Name: | vsat_ProductsWarrantyPeriodMaximum
Namespace Prefix: | vsat_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration