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Reportable Segments (Revenues, Gross Profit and Gross Margin, by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 25, 2016	Sep. 27, 2015
Segment Reporting Information [Line Items]
Revenue, net	$ 321,329	$ 381,549
Gross profit	$ 86,341	$ 107,192
Gross margin	26.90%	28.10%
Lighting Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	$ 183,836	$ 248,031
Gross profit	$ 49,290	$ 69,081
Gross margin	26.80%	27.90%
LED Products [Member]
Segment Reporting Information [Line Items]
Revenue, net	$ 137,493	$ 133,518
Gross profit	$ 41,770	$ 41,869
Gross margin	30.40%	31.40%
Total segment gross profit [Member]
Segment Reporting Information [Line Items]
Gross profit	$ 91,060	$ 110,950
Unallocated Costs [Member]
Segment Reporting Information [Line Items]
Gross profit	$ (4,719)	$ (3,758)

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=63488584&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=63488584&loc=d3e20235-122688

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Details

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