Stock-Based Compensation - Schedule of Total Stock-Based Compensation Expense (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Sep. 29, 2025 |
Dec. 28, 2025 |
Sep. 29, 2025 |
Dec. 29, 2024 |
Dec. 29, 2024 |
|
| Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Total stock-based compensation expense | $ 0.0 | $ 7.6 | $ 13.6 | $ 20.2 | $ 43.9 |
| Cost of revenue, net | |||||
| Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Total stock-based compensation expense | 0.0 | 5.9 | 7.8 | 9.0 | 17.5 |
| Research and development | |||||
| Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Total stock-based compensation expense | 0.0 | 0.3 | 2.2 | 2.9 | 6.1 |
| Sales, general and administrative | |||||
| Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Total stock-based compensation expense | $ 0.0 | $ 1.4 | $ 3.6 | $ 8.3 | $ 20.3 |