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Financial Statement Details (Summary of Changes in Allowance for Sales Returns and Other Incentives) (Details) (USD $) In Thousands | 12 Months Ended
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Jun. 26, 2011 | Jun. 27, 2010 | Jun. 28, 2009
Financial Statement Details |  |  |
Balance at beginning of period | $ 20,551 | $ 9,644 | $ 5,944
Current period claims | (47,448) | (23,036) | (10,981)
Provisions for sales returns | 46,512 | 33,943 | 14,681
Balance at end of period | $ 19,615 | $ 20,551 | $ 9,644

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- Definition Allowance For Sales Returns and Other Incentives + Details
Name: | cree_AllowanceForSalesReturnsAndOtherIncentives
Namespace Prefix: | cree
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Allowance For Sales Returns And Other Incentives Current Period Claims + Details
Name: | cree_AllowanceForSalesReturnsAndOtherIncentivesCurrentPeriodClaims
Namespace Prefix: | cree
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Allowance for sales returns and other incentives, provision for sales returns. + Details
Name: | cree_AllowanceForSalesReturnsAndOtherIncentivesProvisionForSalesReturns
Namespace Prefix: | cree
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Financial Statement Details [Abstract] + Details
Name: | cree_FinancialStatementDetailsAbstract
Namespace Prefix: | cree
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration