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Commitments and Contingencies - Purchase Obligations (Details) $ in Millions | 12 Months Ended
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Jun. 29, 2019 USD ($) agreement
Purchase Obligations |
Legally-binding purchase commitment obligations | $ | $ 76.2
Typical duration of supply agreements with single or limited source vendors | 1 year
Long-term guaranteed supply agreements | agreement | 0

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- Definition Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(17)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(19)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(25)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the number of long-term guaranteed supply agreements. + References No definition available. + Details
Name: | viav_NumberOfLongTermGuaranteedSupplyAgreements
Namespace Prefix: | viav_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | viav_PurchaseCommitmentExcludingLongTermCommitmentAbstract
Namespace Prefix: | viav_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The typical duration of supply agreements that the entity has with single or limited source vendors. + References No definition available. + Details
Name: | viav_SupplyAgreementTypicalDuration
Namespace Prefix: | viav_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration