Intangible Assets (Components of intangible assets, net) (Details) - USD ($) $ in Thousands	Mar. 27, 2016	Jun. 28, 2015
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 487,605	$ 460,482
Finite-lived intangible assets, accumulated amortization	(257,366)	(229,433)
Finite-lived intangible assets, net	230,239	231,049
Trade names, indefinite-lived	79,680	79,680
Intangible Assets, Gross (Excluding Goodwill)	567,285	540,162
Intangible assets, net	309,919	310,729
Customer relationships
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	141,420	136,920
Finite-lived intangible assets, accumulated amortization	(76,871)	(72,063)
Finite-lived intangible assets, net	64,549	64,857
Developed technology
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	174,163	162,760
Finite-lived intangible assets, accumulated amortization	(106,399)	(91,562)
Finite-lived intangible assets, net	67,764	71,198
In-process research and development
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	7,565	0
Finite-lived intangible assets, accumulated amortization	(270)	0
Finite-lived intangible assets, net	7,295	0
Non-compete agreements
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	10,475	10,244
Finite-lived intangible assets, accumulated amortization	(9,485)	(7,958)
Finite-lived intangible assets, net	990	2,286
Trade names, finite-lived
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	520	520
Finite-lived intangible assets, accumulated amortization	(520)	(520)
Finite-lived intangible assets, net	0	0
Patent and licensing rights
Intangible Assets [Line Items]
Finite-lived intangible assets, gross	153,462	150,038
Finite-lived intangible assets, accumulated amortization	(63,821)	(57,330)
Finite-lived intangible assets, net	$ 89,641	$ 92,708

Intangible Assets [Line Items]

No definition available.

Name:	cree_IntangibleAssetsLineItems
Namespace Prefix:	cree_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_IndefiniteLivedTradeNames
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

+ Details

Name:	us-gaap_IntangibleAssetsGrossExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_IntangibleAssetsNetExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=cree_PatentandLicenseRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: