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.

+ Details

Name:	cree_GrossProfitPercent
Namespace Prefix:	cree_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

Name:	us-gaap_GrossProfit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

+ Details

Name:	us-gaap_SalesRevenueGoodsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Reportable Segments Schedule of Financial Results, by Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 23, 2012	Jun. 29, 2014	Jun. 30, 2013	Jun. 24, 2012
Segment Reporting Information [Line Items]
Revenue	$ 436,290	$ 405,259	$ 415,086	$ 391,006	$ 375,009	$ 348,934	$ 346,286	$ 315,753	$ 1,647,641	$ 1,385,982	$ 1,164,658
Gross profit	162,266	149,994	155,778	150,757	140,725	133,010	133,476	116,049	618,795	523,260	409,462
Gross margin									38.00%	38.00%	35.00%
LED Products [Member]
Segment Reporting Information [Line Items]
Revenue									833,684	801,483	756,924
Gross profit									381,003	344,649	290,642
Gross margin									46.00%	43.00%	38.00%
Lighting Products [Member]
Segment Reporting Information [Line Items]
Revenue									706,425	495,089	334,704
Gross profit									197,304	148,947	103,396
Gross margin									28.00%	30.00%	31.00%
Power and RF Products [Member]
Segment Reporting Information [Line Items]
Revenue									107,532	89,410	73,030
Gross profit									60,723	48,127	32,051
Gross margin									56.00%	54.00%	44.00%
SegmentsTotal [Member]
Segment Reporting Information [Line Items]
Gross profit									639,030	541,723	426,089
Unallocated costs [Member]
Segment Reporting Information [Line Items]
Gross profit									$ (20,235)	$ (18,463)	$ (16,627)