Basis of Presentation and New Accounting Standards - Schedule of Noncash Operating Activities (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 9 Months Ended | |
|---|---|---|---|---|
Sep. 29, 2025 |
Mar. 29, 2026 |
Mar. 29, 2026 |
Mar. 30, 2025 |
|
| Accounting Policies [Abstract] | ||||
| Decrease in property, plant and equipment from investment tax credit receivables | $ 76.8 | $ 44.4 | $ 264.5 | |
| Lease asset and liability additions | 19.1 | 3.6 | 35.2 | |
| Lease asset and liability modifications, net | (0.2) | (0.2) | 2.9 | |
| Lease termination | (0.1) | (5.0) | 0.0 | |
| Lease asset impairment | 0.0 | 0.0 | $ 0.0 | (4.8) |
| Decrease in accrued property, plant and equipment | (82.4) | (35.8) | (146.3) | |
| Commitment fee payable for 2030 Senior Notes | $ 0.0 | $ 0.0 | $ 15.2 | |