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Discontinued Operations - Financial Results (Details) - Lighting Products - Discontinued Operations, Disposed of by Sale $ in Millions | 12 Months Ended
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Jun. 30, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Revenue, net | $ 419.8
Cost of revenue, net | 324.3
Gross profit | 95.5
Research and development | 37.1
Sales, general and administrative | 100.6
Amortization or impairment of acquisition-related intangibles | 116.4
Goodwill impairment charges | 90.3
Loss on disposal or impairment of long-lived assets | 2.0
Loss before income taxes and loss on sale | (250.9)
Loss on sale | 66.2
Loss before income taxes | (317.1)
Income tax expense | 0.1
Net loss | $ (317.2)

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