Intangible Assets - Schedule of Components of Intangible Assets (Details) - USD ($) $ in Millions |
Dec. 28, 2025 |
Jun. 29, 2025 |
|---|---|---|
| Intangible Asset, Acquired, Finite-Lived [Line Items] | ||
| Gross | $ 446.3 | $ 50.5 |
| Accumulated Amortization | (19.5) | (26.7) |
| Net | 426.8 | 23.8 |
| Fresh start accounting-related intangible assets | ||
| Intangible Asset, Acquired, Finite-Lived [Line Items] | ||
| Gross | 388.0 | 0.0 |
| Accumulated Amortization | (14.3) | 0.0 |
| Net | 373.7 | 0.0 |
| Customer relationships | ||
| Intangible Asset, Acquired, Finite-Lived [Line Items] | ||
| Gross | 120.0 | 0.0 |
| Accumulated Amortization | (3.3) | 0.0 |
| Net | 116.7 | 0.0 |
| Developed technology | ||
| Intangible Asset, Acquired, Finite-Lived [Line Items] | ||
| Gross | 240.0 | 0.0 |
| Accumulated Amortization | (10.4) | 0.0 |
| Net | 229.6 | 0.0 |
| Trade names | ||
| Intangible Asset, Acquired, Finite-Lived [Line Items] | ||
| Gross | 28.0 | 0.0 |
| Accumulated Amortization | (0.6) | 0.0 |
| Net | 27.4 | 0.0 |
| Patent and licensing rights | ||
| Intangible Asset, Acquired, Finite-Lived [Line Items] | ||
| Gross | 58.3 | 50.5 |
| Accumulated Amortization | (5.2) | (26.7) |
| Net | $ 53.1 | $ 23.8 |