Leases - Schedule of Cash Flow Information (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
Sep. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 30, 2024 |
|
| Cash (used in) provided by operating activities: | ||||
| Cash paid for operating leases | $ (4.1) | $ (15.6) | $ (15.5) | $ (12.6) |
| Cash received for tenant allowance on operating leases | 0.0 | 0.0 | 1.8 | 0.4 |
| Cash paid for interest portion of financing leases | (0.1) | (0.2) | (0.2) | (0.3) |
| Cash used in financing activities: | ||||
| Cash paid for principal portion of finance leases | $ (0.1) | $ (0.4) | $ (0.5) | $ (0.4) |