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Reportable Segments - Inventory by Reportable Segment (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 24, 2018
Segment Reporting Information [Line Items]
Inventories	$ 187.4	$ 151.6
Operating Segments
Segment Reporting Information [Line Items]
Inventories	180.8	147.7
Operating Segments | Wolfspeed
Segment Reporting Information [Line Items]
Inventories	81.6	47.2
Operating Segments | LED Products
Segment Reporting Information [Line Items]
Inventories	99.2	100.5
Segment Reconciling Items
Segment Reporting Information [Line Items]
Inventories	$ 6.6	$ 3.9

X

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116846819&loc=d3e3927-108312

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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+ References

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