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Reportable Segments - Inventory by Reportable Segment (Details) - USD ($) $ in Millions | Dec. 29, 2019 | Jun. 30, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Inventories | $ 165.3 | $ 187.4
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Inventories | 160.8 | 180.8
Segment Reconciling Items |  |
Segment Reporting Information [Line Items] |  |
Inventories | 4.5 | 6.6
Wolfspeed | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Inventories | 84.6 | 81.6
LED Products | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Inventories | $ 76.2 | $ 99.2

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