v3.25.4
Restructuring - Schedule of Restructuring Exit And Disposal Costs Associated With The Operational Plan (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Sep. 29, 2025
Dec. 28, 2025
Sep. 29, 2025
Dec. 29, 2024
Dec. 28, 2025
Dec. 29, 2024
2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         $ 3.1  
Impairments on abandoned assets $ 0.0 $ 0.1 $ 0.1 $ 124.5   $ 124.5
Total 0.0 16.6 21.8 188.1   275.2
2026 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges         8.0  
Inventory write-down/scrap | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 9.1 2.5 0.0   0.0
Severance | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 0.6 0.1 15.0 0.8 51.5
Severance | 2026 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges   8.0     8.0  
Contract termination costs | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 0.0 2.3 0.0 $ 2.3 0.0
Total cost of revenue, net | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 15.0 18.1 31.4   65.7
Total cost of revenue, net | Accelerated depreciation | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 0.0 5.6 11.7   23.4
Total cost of revenue, net | Other closure-related costs | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 5.9 10.0 19.7   42.3
Other operating expense | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 1.6 3.7 156.7   209.5
Other operating expense | 2026 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Total   8.0        
Other operating expense | Accelerated depreciation | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges 0.0 0.0 0.0 5.7   12.8
Other operating expense | Other closure-related costs | 2025 Restructuring Plan            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges $ 0.0 $ 0.9 $ 1.2 $ 11.5   $ 20.7