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Income Taxes (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Oct. 02, 2026
Oct. 03, 2025
Sep. 27, 2024
Income Taxes [Line Items]      
Deemed repatriation tax, liability, current $ 0.0 $ 56.3  
Income tax holiday, Singapore September 30, 2030    
Impact of income tax holiday, Singapore $ 6.6 $ 6.6 $ 67.7
Impact of income tax holiday on diluted earnings per share, Singapore (in dollars per share) $ 0.04 $ 0.04 $ 0.42
Valuation allowance, amount $ 204.3 $ 186.8  
Tax benefit to recognize if valuation allowance is reversed 204.3    
Valuation allowance, increase (decrease), amount 17.5    
Total unrecognized tax benefits that would impact the effective tax rate 65.5    
Unrecognized tax benefits, income tax penalties and interest expense 11.2 2.5 $ 5.5
Unrecognized tax benefits, income tax penalties and interest accrued 13.9 $ 9.9  
US federal and state      
Income Taxes [Line Items]      
Valuation allowance, amount 189.1    
Foreign      
Income Taxes [Line Items]      
Valuation allowance, amount $ 15.2    
United States      
Income Taxes [Line Items]      
Open tax year 2023    
California      
Income Taxes [Line Items]      
Open tax year 2008    
Mexico      
Income Taxes [Line Items]      
Open tax year 2019    
Japan      
Income Taxes [Line Items]      
Open tax year 2019    
Singapore      
Income Taxes [Line Items]      
Open tax year 2021