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Stock-Based Compensation - Narrative (Details) - plans	3 Months Ended	6 Months Ended
	Sep. 29, 2019	Dec. 29, 2019
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum contribution of employee's compensation (as a percent)		15.00%
Employee stock plan purchase price of fair value (as a percent)		15.00%
Number of times employees can purchase stock per year		2
Discount from market price, beginning of participation period or purchase date (as a percent)		15.00%
2013 Long-Term Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity-based compensation plans	1

X

- Definition

Number of times employees can purchase stock under Employee Stock Purchase Plan (ESPP), per year

+ References

No definition available.

+ Details

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Namespace Prefix:	cree_
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Balance Type:	na
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X

- Definition

Number of equity-based compensation plans from which awards can be granted to employees and directors.

+ References

No definition available.

+ Details

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X

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price,Beginning of Participation Period or Purchase Date

+ References

No definition available.

+ Details

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Namespace Prefix:	cree_
Data Type:	num:percentItemType
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Period Type:	duration

X

- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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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X

- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Details

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