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Intangible Assets (Components of intangible assets, net) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 29, 2015 | Jun. 29, 2014
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Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | $ 457,119 us-gaap_FiniteLivedIntangibleAssetsGross | $ 445,571 us-gaap_FiniteLivedIntangibleAssetsGross
Finite-lived intangible assets, accumulated amortization | (214,570)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (188,828)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Finite-lived intangible assets, net | 242,549 us-gaap_FiniteLivedIntangibleAssetsNet | 256,743 us-gaap_FiniteLivedIntangibleAssetsNet
Trade names, indefinite-lived | 79,680 us-gaap_IndefiniteLivedTradeNames | 79,680 us-gaap_IndefiniteLivedTradeNames
Intangible Assets, Gross (Excluding Goodwill) | 536,799 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 525,251 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Intangible assets, net | 322,229 us-gaap_IntangibleAssetsNetExcludingGoodwill | 336,423 us-gaap_IntangibleAssetsNetExcludingGoodwill
Customer Relationships [Member] |  |
Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 136,920 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 137,440 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Finite-lived intangible assets, accumulated amortization | (70,737)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (66,970)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Finite-lived intangible assets, net | 66,183 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 70,470 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Developed Technology [Member] |  |
Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 162,760 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember | 162,760 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember
Finite-lived intangible assets, accumulated amortization | (86,902)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember | (72,921)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember
Finite-lived intangible assets, net | 75,858 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember | 89,839 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember
Non-compete Agreements [Member] |  |
Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 10,244 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember | 10,244 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember
Finite-lived intangible assets, accumulated amortization | (7,467)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember | (5,997)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember
Finite-lived intangible assets, net | 2,777 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember | 4,247 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember
Trade Names, finite-lived [Member] |  |
Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 520 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember | 520 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember
Finite-lived intangible assets, accumulated amortization | (520)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember | (516)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember
Finite-lived intangible assets, net | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember | 4 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember
Patent and Licensing Rights [Member] |  |
Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 146,675 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = cree_PatentandLicenseRightsMember | 134,607 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = cree_PatentandLicenseRightsMember
Finite-lived intangible assets, accumulated amortization | (48,944)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = cree_PatentandLicenseRightsMember | (42,424)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = cree_PatentandLicenseRightsMember
Finite-lived intangible assets, net | $ 97,731 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = cree_PatentandLicenseRightsMember | $ 92,183 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = cree_PatentandLicenseRightsMember

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