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v3.19.3.a.u2

Leases - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 29, 2019 USD ($) | Dec. 29, 2019 USD ($) reportable_segments
Lessee, Lease, Description [Line Items] |  |
Operating lease expense | $ 1.6 | $ 3.0
Finance lease amortization and interest expense (less than) | $ 0.1 | $ 0.1
Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Number of renewal options | reportable_segments |  | 1
Renewal term of leases |  | 1 year
Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Renewal term of leases |  | 5 years

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- Definition Finance Lease, Expense + References No definition available. + Details
Name: | cree_FinanceLeaseExpense
Namespace Prefix: | cree_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Lessee, Lease, Number of Renewal Options + References No definition available. + Details
Name: | cree_LesseeLeaseNumberOfRenewalOptions
Namespace Prefix: | cree_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Lessee, Lease, Renewal Term + References No definition available. + Details
Name: | cree_LesseeLeaseRenewalTerm
Namespace Prefix: | cree_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- 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_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |