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Reportable Segments (Schedule of Percentage of Revenues from Customers by Country) (Details) | 12 Months Ended
--- | ---
Jun. 24, 2012 | Jun. 26, 2011 | Jun. 27, 2010
Statement [Line Items] |  |  |
Revenues from External Customers | 100.00% | 100.00% | 100.00%
China |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 32.00% | 36.00% | 40.00%
United States |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 38.00% | 24.00% | 19.00%
Europe |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 14.00% | 14.00% | 13.00%
South Korea |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 2.00% | 4.00% | 10.00%
Japan |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 8.00% | 7.00% | 9.00%
Malaysia |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 2.00% | 2.00% | 2.00%
Taiwan |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 1.00% | 5.00% | 4.00%
Other |  |  |
Statement [Line Items] |  |  |
Revenues from External Customers | 3.00% | 8.00% | 3.00%

X
- Definition Percent of revenue from external customers recognized during the period (derived from goods sold, services rendered, or other activities that constitute an entity's earning process. + References No definition available. + Details
Name: | cree_PercentageOfRevenuesFromExternalCustomers
Namespace Prefix: | cree_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration