v3.26.1
Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 14, 2025
USD ($)
Sep. 29, 2025
USD ($)
Sep. 28, 2025
USD ($)
Jun. 28, 2026
USD ($)
ft²
building
compensationPlan
Jun. 28, 2026
USD ($)
ft²
segment
option
reporting_unit
building
compensationPlan
Jun. 29, 2025
USD ($)
ft²
property
Jun. 30, 2024
USD ($)
Jun. 22, 2025
Mar. 30, 2025
property
Property, Plant, and Equipment [Line Items]                  
Number of reportable segments | segment         1        
Reduction of debt, percentage       70.00% 70.00%        
Cash, cash equivalents and short-term investments   $ 835,400,000   $ 1,088,600,000 $ 1,088,600,000 $ 955,400,000      
Minimum cash balance         350,000,000.0        
Credit Loss Allowance   0   0 0 0 $ 0    
Current assets held for sale       1,700,000 1,700,000 24,400,000      
Inventory write-off   29,000,000.0   34,000,000.0   6,800,000 13,900,000    
Depreciation of property and equipment   68,300,000   42,600,000   243,800,000 175,500,000    
Impairments, restructuring and other expenses   100,000   2,000,000.0   171,700,000 800,000    
Property and equipment, net   769,200,000   691,400,000 691,400,000 3,916,500,000      
Cash tax refunds         698,600,000 189,100,000      
Interest income           2,600,000      
Investment tax credit receivable   654,000,000.0   84,400,000 84,400,000 653,400,000      
Long-term investment tax credit receivable   181,300,000   116,500,000 116,500,000 105,000,000.0      
Increase (decrease) in investment tax credit receivable     $ 50,700,000            
Government assistance, award amount       500,000,000.0 $ 500,000,000.0        
Expected incentives to be received, term         18 years        
Number of reporting units | reporting_unit         1        
Goodwill, impairment loss   0   0   359,200,000 0    
Gain (loss) on disposals or impairments of property and equipment   5,700,000   5,400,000   20,000,000.0 0    
Gain on RTP Fab Transfer   25,400,000   0   0 0    
Advertising expense   3,800,000   $ 2,400,000   11,600,000 13,800,000    
Number of employee benefit plans | compensationPlan       1 1        
Employer discretionary contribution amount   2,100,000   $ 6,800,000   12,100,000 13,300,000    
Net unrealized gain (loss) on available-for-sale securities       0.0 $ 0.0 (3,800,000)      
Unrealized loss on available-for-sale securities           2,400,000      
Cash paid for interest, net of capitalized interest   38,400,000   113,400,000   130,300,000 213,500,000    
Income tax paid, net   200,000   1,000,000.0   800,000 $ 9,800,000    
Equipment                  
Property, Plant, and Equipment [Line Items]                  
Gain (loss) on disposals or impairments of property and equipment   $ 5,700,000              
Building, Build Improvements, Land and Equipment                  
Property, Plant, and Equipment [Line Items]                  
Gain (loss) on disposals or impairments of property and equipment       $ 5,400,000          
Building                  
Property, Plant, and Equipment [Line Items]                  
Property, plant and equipment, number of buildings sold | building       1 1        
Idle Property in Durham, NC                  
Property, Plant, and Equipment [Line Items]                  
Area of land | ft²       254,000 254,000        
The State Of New York Urban Development Corporation                  
Property, Plant, and Equipment [Line Items]                  
Government assistance, award amount       $ 503,400,000 $ 503,400,000        
Proceeds from government assistance         501,400,000        
Grants receivable, current       2,000,000.0 2,000,000.0        
Government Grants From The North Carolina Department Of Commerce And The Town Of Siler City By Grant Issued From The Golden Leaf Foundation                  
Property, Plant, and Equipment [Line Items]                  
Government assistance, award amount       74,900,000 74,900,000        
Grants receivable, current       3,500,000 3,500,000        
Non-US                  
Property, Plant, and Equipment [Line Items]                  
Property and equipment, net       11,200,000 11,200,000 $ 142,900,000      
Disposal Group, Held-for-Sale, Not Discontinued Operations                  
Property, Plant, and Equipment [Line Items]                  
Number of properties held-for-sale | property                 3
Disposal Group, Held-for-Sale, Not Discontinued Operations | One Property Located in North Carolina                  
Property, Plant, and Equipment [Line Items]                  
Current assets held for sale       $ 1,700,000 $ 1,700,000        
Discontinued Operations, Disposed of by Sale                  
Property, Plant, and Equipment [Line Items]                  
Number of properties held-for-sale | property           2      
Discontinued Operations, Disposed of by Sale | One Property Located in North Carolina                  
Property, Plant, and Equipment [Line Items]                  
Area of land | ft²           179,000      
Discontinued Operations, Disposed of by Sale | Two Property Located in Texas                  
Property, Plant, and Equipment [Line Items]                  
Gain on RTP Fab Transfer           $ 20,000,000.0      
Number of properties held-for-sale | property           2      
Discontinued Operations, Disposed of by Sale | One Property Located In Texas                  
Property, Plant, and Equipment [Line Items]                  
Area of land | ft²           283,000      
Senior Notes | Senior Secured Notes Due 2030                  
Property, Plant, and Equipment [Line Items]                  
Percentage of debt held by key debtholders               97.00%  
Senior Notes | Convertible Senior Notes Due 2026                  
Property, Plant, and Equipment [Line Items]                  
Stated interest rate (as a percent)               1.75%  
Senior Notes | Convertible Senior Notes Due 2028                  
Property, Plant, and Equipment [Line Items]                  
Stated interest rate (as a percent)               0.25%  
Senior Notes | Convertible Senior Notes Due 2029                  
Property, Plant, and Equipment [Line Items]                  
Stated interest rate (as a percent)               1.875%  
Senior Notes | Convertible Second-Lien Senior Secured Notes Due 2031                  
Property, Plant, and Equipment [Line Items]                  
Stated interest rate (as a percent) 2.50% 2.50%              
Convertible Notes                  
Property, Plant, and Equipment [Line Items]                  
Percentage of debt held by key debtholders               67.00%  
Convertible Notes | 2L Convertible Notes                  
Property, Plant, and Equipment [Line Items]                  
Debt instrument, face amount $ 301,130,000                
Non-holdback rights offering, percentage 60.00%                
Holdback rights offering, percentage 40.00%                
Convertible Notes | Backstop Premium                  
Property, Plant, and Equipment [Line Items]                  
Debt instrument, face amount $ 30,250,000 $ 331,400,000              
Minimum                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       5 years 5 years        
Number of renewal options | option         1        
Renewal term of leases (in years)         1 year        
Maximum                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       11 years 11 years 10 years      
Renewal term of leases (in years)         5 years        
Customer Relationships, Developed Technology & Trade Names | Minimum                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       5 years 5 years        
Customer Relationships, Developed Technology & Trade Names | Maximum                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       11 years 11 years        
Patents                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       20 years 20 years 20 years      
Patents | Minimum                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       6 months 6 months        
Patents | Maximum                  
Property, Plant, and Equipment [Line Items]                  
Estimated Useful Life (in Years)       23 years 23 years