v3.26.1
Fresh Start Accounting - Changes in Fair Value of Intangible Assets Due to Adoption of Fresh Start Accounting (Details) - USD ($)
$ in Millions
Jun. 28, 2026
Sep. 29, 2025
Jun. 29, 2025
Reorganization, Chapter 11 [Line Items]      
Intangible assets, net $ 392.2 $ 445.7 $ 23.8
Minimum      
Reorganization, Chapter 11 [Line Items]      
Estimated Useful Life (in Years) 5 years    
Maximum      
Reorganization, Chapter 11 [Line Items]      
Estimated Useful Life (in Years) 11 years   10 years
Fresh-Start Adjustments      
Reorganization, Chapter 11 [Line Items]      
Intangible assets, net   421.5  
Fresh-Start Adjustments | Patent and licensing rights      
Reorganization, Chapter 11 [Line Items]      
Intangible assets, net   $ 33.5  
Fresh-Start Adjustments | Patent and licensing rights | Minimum      
Reorganization, Chapter 11 [Line Items]      
Estimated Useful Life (in Years)   6 months  
Fresh-Start Adjustments | Patent and licensing rights | Maximum      
Reorganization, Chapter 11 [Line Items]      
Estimated Useful Life (in Years)   23 years  
Fresh-Start Adjustments | Trade name      
Reorganization, Chapter 11 [Line Items]      
Intangible assets, net   $ 28.0  
Estimated Useful Life (in Years)   11 years  
Fresh-Start Adjustments | Developed technology      
Reorganization, Chapter 11 [Line Items]      
Intangible assets, net   $ 240.0  
Fresh-Start Adjustments | Developed technology | Minimum      
Reorganization, Chapter 11 [Line Items]      
Estimated Useful Life (in Years)   5 years  
Fresh-Start Adjustments | Developed technology | Maximum      
Reorganization, Chapter 11 [Line Items]      
Estimated Useful Life (in Years)   6 years  
Fresh-Start Adjustments | Customer relationships      
Reorganization, Chapter 11 [Line Items]      
Intangible assets, net   $ 120.0  
Estimated Useful Life (in Years)   9 years