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Concentrations of Risk (Schedule of Accounts Receivable from Customers in Percent) (Details) | 12 Months Ended
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Jun. 28, 2015
Credit Concentration Risk [Member] | Accounts Receivable [Member] |
Concentration Risk [Line Items] |
Customers meeting concentration risk criteria | 0

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- Definition Customers meeting concentration risk criteria + References No definition available. + Details
Name: | cree_Customersmeetingconcentrationriskcriteria
Namespace Prefix: | cree_
Data Type: | xbrli:integerItemType
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_ConcentrationRiskLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |