Revenue Accounting for Contracts - Contract Liabilities (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 27, 2026 |
Mar. 28, 2025 |
Mar. 27, 2026 |
Mar. 28, 2025 |
|
| Revenue from Contract with Customer [Abstract] | ||||
| Revenue recognized included in contract liability | $ 169.6 | $ 172.2 | $ 618.4 | $ 583.0 |