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Discontinued Operations - Loss from Discontinued Operations, Net of Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 27, 2021 | Mar. 28, 2021 | Dec. 27, 2020 | Sep. 27, 2020 | Jun. 28, 2020 | Mar. 29, 2020 | Dec. 29, 2019 | Sep. 29, 2019 | Jun. 27, 2021 | Jun. 28, 2020 | Jun. 30, 2019
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Net (loss) income | $ (2.4) | $ (41.6) | $ (28.4) | $ (108.8) | $ 5.3 | $ (3.7) | $ 3.9 | $ 1.5 | $ (181.2) | $ 7.0 | $ (256.6)
Net income from discontinued operations attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 1.4 | 1.1 | 0.0
Net (loss) income from discontinued operations attributable to controlling interest |  |  |  |  |  |  |  |  | (182.6) | 5.9 | (256.6)
LED Business | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, net |  |  |  |  |  |  |  |  | 272.8 | 433.2 | 541.8
Cost of revenue, net |  |  |  |  |  |  |  |  | 213.3 | 343.4 | 394.5
Gross profit |  |  |  |  |  |  |  |  | 59.5 | 89.8 | 147.3
Operating expenses: |  |  |  |  |  |  |  |  |  |  |
Research and development |  |  |  |  |  |  |  |  | 22.3 | 32.2 | 36.8
Sales, general and administrative |  |  |  |  |  |  |  |  | 29.4 | 29.7 | 31.8
Goodwill impairment |  |  | $ 6.9 | $ 105.7 |  |  |  |  | 112.6 | 0.0 | 0.0
Impairment on assets held for sale |  | 19.5 |  |  |  |  |  |  | 19.5 | 0.0 | 0.0
Gain on disposal or impairment of long-lived assets |  |  |  |  |  |  |  |  | (1.6) | (0.1) | (0.3)
Other operating expense |  |  |  |  |  |  |  |  | 18.7 | 13.3 | 1.4
Operating loss |  |  |  |  |  |  |  |  | (141.4) | 14.7 | 77.6
Non-operating income |  |  |  |  |  |  |  |  | (0.3) | (0.5) | (0.1)
(Loss) income before income taxes and loss on sale |  |  |  |  |  |  |  |  | (141.1) | 15.2 | 77.7
Loss on sale |  |  |  |  |  |  |  |  | 29.1 | 0.0 | 0.0
(Loss) income before income taxes |  |  |  |  |  |  |  |  | (170.2) | 15.2 | 77.7
Income tax expense |  | $ 4.1 |  |  |  |  |  |  | 11.0 | 8.2 | 17.1
Net (loss) income |  |  |  |  |  |  |  |  | (181.2) | 7.0 | 60.6
Net income from discontinued operations attributable to noncontrolling interest |  |  |  |  |  |  |  |  | 1.4 | 1.1 | 0.0
Net (loss) income from discontinued operations attributable to controlling interest |  |  |  |  |  |  |  |  | $ (182.6) | $ 5.9 | $ 60.6

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