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Business	12 Months Ended
	Jun. 24, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations [Text Block]	Business Overview Cree, Inc. (the Company) is an innovator of wide bandgap semiconductor products for power and radio-frequency (RF) applications, lighting-class light emitting diode (LED) products, and lighting products. The Company's products are targeted for applications such as transportation, power supplies, inverters, wireless systems, indoor and outdoor lighting, electronic signs and signals, and video displays. The Company's Wolfspeed segment's products consists of silicon carbide (SiC) and gallium nitride (GaN) materials, power devices and RF devices based on silicon (Si) and wide bandgap semiconductor materials. The Company's materials products and power devices are used in solar, electric vehicles, motor drives, power supplies and transportation applications. The Company's materials products and RF devices are used in military communications, radar, satellite and telecommunication applications. The Company's LED Products segment's consist of LED chips and LED components. The Company's LED products enable its customers to develop and market LED-based products for lighting, video screens, automotive and specialty lighting applications. The Company's Lighting Products segment's primarily consist of LED lighting systems and lamps. The Company designs, manufactures and sells lighting fixtures and lamps for the commercial, industrial and consumer markets. The majority of the Company's products are manufactured at its production facilities located in North Carolina, Wisconsin, Arkansas, California and China. The Company also uses contract manufacturers for certain products and aspects of product fabrication, assembly and packaging. The Company operates research and development facilities in North Carolina, Arizona, Arkansas, California, Wisconsin, India, Italy and China (including Hong Kong). Cree, Inc. is a North Carolina corporation established in 1987 and is headquartered in Durham, North Carolina. The Company's three reportable segments are: • Wolfspeed • LED Products • Lighting Products For financial results by reportable segment, please refer to Note 15, “Reportable Segments.”
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	Termination of Wolfspeed Sale Transaction On July 13, 2016, the Company executed an Asset Purchase Agreement (the APA) with Infineon Technologies AG (Infineon), in which Infineon agreed to purchase the assets comprising the Company’s power and RF product lines, certain related portions of the Company’s SiC materials and gemstones business previously included within the LED Products segment, and assume certain liabilities related to the Wolfspeed business. On February 16, 2017, the Company announced that the APA would be terminated as the Company and Infineon were unable to identify alternatives to modify the transaction to address the national security concerns of, and obtain approval from, the Committee on Foreign Investment in the United States, one of the closing conditions under the APA. On March 6, 2017, the Company and Infineon entered into a Termination Agreement pursuant to which the APA was terminated. Pursuant to the APA and the Termination Agreement, Infineon paid the Company a termination fee of $12.5 million in cash on March 10, 2017, which is included in Wolfspeed transaction termination fee in the Company’s consolidated statements of loss and in net cash provided by operating activities in the Company’s consolidated statements of cash flows.

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- Definition

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-URI http://asc.fasb.org/topic&trid=2155823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-URI http://asc.fasb.org/subtopic&trid=2122178

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The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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