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Discontinued Operations - Financial Results (Details) - Lighting Products - Discontinued Operations, Held-for-sale or Disposed of by Sale - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2019 | Jun. 24, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Revenue, net | $ 419.8 | $ 568.8
Cost of revenue, net | 324.3 | 463.2
Gross profit | 95.5 | 105.6
Research and development | 37.1 | 35.9
Sales, general and administrative | 100.6 | 97.6
Amortization or impairment of acquisition-related intangibles | 116.4 | 23.6
Goodwill impairment charges | 90.3 | 247.5
Loss on disposal or impairment of long-lived assets | 2.0 | 2.1
Operating loss | (250.9) | (301.1)
Non-operating income | 0.0 | (1.3)
Loss before income taxes and loss on sale | (250.9) | (299.8)
Loss on sale | 66.2 | 0.0
Loss before income taxes | (317.1) | (299.8)
Income tax expense (benefit) | 0.1 | (36.3)
Net loss | $ (317.2) | $ (263.5)

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