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Discontinued Operations - Loss from Discontinued Operations, Net of Income Taxes (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Dec. 31, 2023
Dec. 25, 2022
Dec. 31, 2023
Dec. 25, 2022
Operating expenses:        
Net loss $ (18.5) $ (18.8) $ (290.6) $ (30.9)
Discontinued Operations, Held-for-sale | RF Business        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Revenue, net 26.8 42.3 59.6 94.2
Cost of revenue, net 30.8 32.1 68.7 71.8
Gross (loss) profit (4.0) 10.2 (9.1) 22.4
Operating expenses:        
Research and development 10.2 17.6 30.5 32.5
Sales, general and administrative 6.2 5.3 13.9 10.3
Amortization of intangibles 0.0 2.2 1.5 4.6
Loss on disposal of assets 0.3 0.0 0.3 0.0
Other operating expense 7.2 3.4 24.3 5.5
Operating loss (27.9) (18.3) (79.6) (30.5)
Non-operating expense 0.0 0.2 0.0 0.0
Loss before income taxes and loss on sale (27.9) (18.5) (79.6) (30.5)
(Gain) loss on sale (16.0) 0.0 204.0 0.0
Loss before income taxes (11.9) (18.5) (283.6) (30.5)
Income tax expense 6.6 0.3 7.0 0.4
Net loss $ (18.5) $ (18.8) $ (290.6) $ (30.9)