Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)		3 Months Ended								12 Months Ended
	Jul. 17, 2017 USD ($)	Jun. 28, 2020 USD ($)	Mar. 29, 2020 USD ($)	Dec. 29, 2019 USD ($)	Sep. 29, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 30, 2018 USD ($)	Sep. 23, 2018 USD ($)	Jun. 27, 2021	Jun. 28, 2020 USD ($) reportable_segments board_member operating_segments	Jun. 30, 2019 USD ($)	Jun. 24, 2018 USD ($)	Jul. 01, 2019 USD ($)
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Fiscal period duration											364 days	371 days	364 days
Prior period reclassification adjustment											$ 0
Number of operating segments | operating_segments											2
Number of reportable segments | reportable_segments											2
Other-than-temporary impairment losses on investments											$ 0	$ 0	$ 0
Common stock ownership interest (as a percent)		16.00%									16.00%
Advertising costs											$ 4,100,000	4,200,000	3,900,000
Proceeds from issuing Cree Venture LED stock to noncontrolling interest											0	0	4,900,000
Net income attributable to non-controlling interest		$ 600,000	$ 200,000	$ 300,000	$ 0	$ (100,000)	$ 100,000	$ 0	$ 0		1,100,000	0	100,000
Cash paid for interest											5,900,000	4,000,000.0	6,100,000
Cash paid for income taxes, net of refunds received											$ 7,100,000	$ 5,400,000	$ 100,000
Accounting Standards Update [Extensible List]												us-gaap:AccountingStandardsUpdate201409Member
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected [Extensible List]											us-gaap:AccountingStandardsUpdate201602ModifiedRetrospectiveMember
Lease liability		13,900,000									$ 13,900,000
Right-of-use assets		$ 14,000,000.0									$ 14,000,000.0
Cree Venture LED
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Payments to acquire interest in joint venture	$ 5,100,000
Ownership interest by parent (as a percent)	51.00%
Number of directors | board_member											5
Number of directors appointed by company | board_member											3
Net income attributable to non-controlling interest											$ 1,100,000	$ 0.0
San'an Optoelectronics Co., Ltd. | Cree Venture LED
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Proceeds from issuing Cree Venture LED stock to noncontrolling interest	$ 4,900,000
Ownership interest by noncontrolling owners (as a percent)	49.00%
Number of directors appointed by company | board_member											2
Accounting Standards Update 2016-02
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Accounting Standards Update [Extensible List]											us-gaap:AccountingStandardsUpdate201602Member
Lease liability														$ 12,200,000
Right-of-use assets														$ 12,300,000
Accounting Standards Update 2018-10
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Accounting Standards Update [Extensible List]											us-gaap:AccountingStandardsUpdate201810Member
Reclassification out of Accumulated Other Comprehensive Income
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Currency translation gains (losses) reclassified to earnings												$ (5,200,000)
Minimum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of finite-lived intangible assets											4 years
Number of renewal options | reportable_segments											1
Renewal term of leases											1 year
Maximum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of finite-lived intangible assets											15 years
Renewal term of leases											5 years
Patents | Maximum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of finite-lived intangible assets											20 years
Furniture and fixtures
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											5 years
Buildings and building improvements | Minimum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											5 years
Buildings and building improvements | Maximum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											40 years
Machinery and equipment | Minimum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											3 years
Machinery and equipment | Maximum
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											15 years
Vehicles
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											5 years
Computer hardware/software
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Useful life of property, plant and equipment											3 years
Forecast
Basis of Presentation and Changes in Significant Accounting Policies [Line Items]
Fiscal period duration										364 days