XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Apr. 30, 2017 | May 31, 2013 | Mar. 31, 2017 | Mar. 31, 2016
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Loss contingency impact to net income attributable to ViaSat, Inc. stockholders |  |  |  | $ 4.0 |
Loss contingency impact to net (loss) income attributable to noncontrolling interests, net of tax |  |  |  | 3.7 |
TrellisWare [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Minority interest ownership percentage by parent |  |  |  |  | 52.00%
Operating Segments [Member] | Government Systems [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Accrued total loss contingency |  |  |  | 11.8 |
Accrued loss contingency in uncharacterized damages |  |  |  | 11.4 |
Accrued loss contingency in penalties |  |  |  | 0.4 |
Accrued Liabilities [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Accrued total loss contingency | $ 8.8 |  |  |  |
Other Long Term Liabilities [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Accrued total loss contingency | 3.0 |  |  |  |
Unfavorable Regulatory Action [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
U.S. government contract-related reserves | 1.3 |  |  | $ 1.8 |
Satellite - ViaSat-2 [Member] | Capital Addition [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Commitment amount |  |  | $ 358.0 |  |
Satellite - ViaSat-2 [Member] | Satellite Performance Incentives Obligation [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Commitment amount |  | $ 21.0 |  |  |
Period of in-orbit satellite performance incentive payments |  | 9 years |  |  |
ViaSat-3 Class Satellites [Member] | Capital Addition [Member] |  |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |  |
Commitment amount | $ 379.5 |  |  |  |

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loss contingency estimate of possible loss impact to net Income loss attributable to noncontrolling interest. + References No definition available. + Details
Name: | vsat_LossContingencyEstimateOfPossibleLossImpactToNetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | vsat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss contingency estimate of possible loss impact to net income loss available to common stockholders. + References No definition available. + Details
Name: | vsat_LossContingencyEstimateOfPossibleLossImpactToNetIncomeLossAvailableToCommonStockholders
Namespace Prefix: | vsat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reflects the estimated amount of loss in penalties from the specified contingency as of the balance sheet date. + References No definition available. + Details
Name: | vsat_LossContingencyEstimateOfPossibleLossPenalties
Namespace Prefix: | vsat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the estimated amount of loss in uncharacterized damages from the specified contingency as of the balance sheet date. + References No definition available. + Details
Name: | vsat_LossContingencyEstimateOfPossibleLossUncharacterizedDamages
Namespace Prefix: | vsat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_OwnershipAxis=vsat_TrelliswareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=vsat_GovernmentSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=vsat_AccruedLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_UnfavorableRegulatoryActionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=vsat_SatelliteViasatTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=us-gaap_CapitalAdditionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=vsat_SatellitePerformanceIncentivesObligationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=vsat_SatelliteViasatThreeClassSatellitesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |