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Discontinued Operations - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 01, 2021
Dec. 31, 2023
Sep. 24, 2023
Dec. 25, 2022
Dec. 31, 2023
Dec. 25, 2022
Dec. 02, 2023
Dec. 01, 2023
Jun. 25, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Restructuring and related cost, facility transfer period threshold             2 years    
Restructuring and related cost, lease not yet commenced, period             15 years    
Other current liabilities   $ 85,700,000     $ 85,700,000       $ 35,700,000
Other current assets   228,900,000     228,900,000       131,500,000
Other long-term liabilities   281,400,000     281,400,000       143,500,000
Term of certain silicon carbide materials and fabrication services 4 years                
Loss before income taxes   (125,900,000)   $ (72,000,000.0) (249,300,000) $ (86,000,000.0)      
RF Business Master Supply Agreement                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Other current liabilities   92,900,000     92,900,000   $ 95,000,000    
Other current assets   1,000,000     1,000,000        
RF Business, Long-Term Epi Supply Agreement                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Other long-term liabilities             58,000,000    
RF Business, RTP Fab Transfer                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Other long-term liabilities             38,000,000    
Wafer Supply Agreement                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Other current assets   900,000     900,000        
Loss before income taxes   (6,600,000)   (2,600,000) (13,500,000) (2,500,000)      
Discontinued Operations, Held-for-sale | RF Business                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Impairment on assets held for sale     $ 144,600,000            
Excess loss liability on assets held for sale     $ 75,400,000            
Gain (loss) from sale of disposal   16,000,000.0   0 (204,000,000) 0      
Disposal group, selling costs             25,400,000    
Supply agreement liability                 $ 5,300,000
Discontinued Operations, Held-for-sale | RF Business, Consideration, Cash                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Aggregate net proceeds from sale of business unit             $ 75,000,000    
Discontinued Operations, Held-for-sale | RF Business, Consideration, Equity Interest Issued Or Issuable                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Aggregate net proceeds from sale of business unit               $ 60,800,000  
Disposal group, including discontinued operation, consideration, equity interest issued or issuable (in shares)             711,528    
Discontinued Operations, Disposed of by Sale | LED Business                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Supply agreement liability $ 31,000,000 $ 0     $ 0        
Discontinued Operations, Disposed of by Sale | LED Business | Maximum                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Term of real estate license agreement 24 months                
Discontinued Operations, Disposed of by Sale | LED Business, Real Estate License Agreement                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Administrative fees       900,000   1,800,000      
Discontinued Operations, Disposed of by Sale | LED Business, Transition Services Agreement                  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Administrative fees       $ 1,800,000   $ 3,700,000