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Reportable Segments - Inventory by Reportable Segment (Details) - USD ($) $ in Millions | Sep. 27, 2020 | Jun. 28, 2020
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Inventories | $ 187.3 | $ 179.1
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Inventories | 178.4 | 173.5
Segment Reconciling Items |  |
Segment Reporting Information [Line Items] |  |
Inventories | 8.9 | 5.6
Wolfspeed | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Inventories | 106.7 | 97.3
LED Products | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Inventories | $ 71.7 | $ 76.2

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