Reportable Segments (Revenues, Gross Profit and Gross Margin, by Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 29, 2015	Mar. 30, 2014	Mar. 29, 2015	Mar. 30, 2014
Segment Reporting Information [Line Items]
Revenue, net	$ 409,519us-gaap_SalesRevenueGoodsNet	$ 405,259us-gaap_SalesRevenueGoodsNet	$ 1,250,348us-gaap_SalesRevenueGoodsNet	$ 1,211,351us-gaap_SalesRevenueGoodsNet
Gross profit	125,408us-gaap_GrossProfit	149,994us-gaap_GrossProfit	398,007us-gaap_GrossProfit	456,529us-gaap_GrossProfit
Gross margin	30.60%cree_GrossProfitPercent	37.00%cree_GrossProfitPercent	31.80%cree_GrossProfitPercent	37.70%cree_GrossProfitPercent
LED Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	154,384	201,119	479,851	634,164
Gross profit	55,358	91,634	182,406	290,931
Gross margin	35.90%	45.60%	38.00%	45.90%
Lighting Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	224,109	176,691	677,363	498,265
Gross profit	58,315	48,487	178,608	136,731
Gross margin	26.00%	27.40%	26.40%	27.40%
Power and RF Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	31,026	27,449	93,134	78,922
Gross profit	16,484	15,675	51,601	44,452
Gross margin	53.10%	57.10%	55.40%	56.30%
Total segment gross profit [Member]
Segment Reporting Information [Line Items]
Gross profit	130,157	155,796	412,615	472,114
Unallocated Costs [Member]
Segment Reporting Information [Line Items]
Gross profit	$ (4,749)	$ (5,802)	$ (14,608)	$ (15,585)

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.

No definition available.

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- Definition

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

+ References

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- 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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