Document and Entity Information (USD $)	12 Months Ended
	Jun. 29, 2014	Aug. 21, 2014	Dec. 27, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	CREE INC
Entity Central Index Key	0000895419
Current Fiscal Year End Date	--06-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Jun. 29, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		120,040,796
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 7,379,080,394