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Reportable Segments (Revenues, Gross Profit and Gross Margin, by Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 28, 2014	Sep. 29, 2013
Segment Reporting Information [Line Items]
Revenue, net	$ 427,672	$ 391,006
Gross profit	135,820	150,757
Gross Margin	31.80%	38.60%
LED Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	173,590	218,023
Gross profit	67,624	101,653
Gross Margin	39.00%	46.60%
Lighting Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	223,086	147,918
Gross profit	55,592	39,818
Gross Margin	24.90%	26.90%
Power and RF Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	30,996	25,065
Gross profit	17,857	13,456
Gross Margin	57.60%	53.70%
Total segment gross profit [Member]
Segment Reporting Information [Line Items]
Gross profit	141,073	154,927
Unallocated Costs [Member]
Segment Reporting Information [Line Items]
Gross profit	$ (5,253)	$ (4,170)

X

- Definition

Gross profit (aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity), as percent of revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	cree_
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X

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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X

- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Details

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