Stock-Based Compensation - Weighted-Average Assumptions Utilized to Value Stock Options (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 29, 2025 |
Mar. 30, 2024 |
Mar. 29, 2025 |
Mar. 30, 2024 |
|
| Share-Based Payment Arrangement [Abstract] | ||||
| Risk-free interest rate | 4.20% | 4.40% | 4.20% | 4.40% |
| Expected volatility | 32.50% | 33.40% | 32.50% | 33.40% |
| Expected life (in years) | 4 years 9 months 18 days | 4 years 9 months 18 days | 4 years 9 months 18 days | 4 years 9 months 18 days |
| Dividend yield | $ 0 | $ 0 | $ 0 | $ 0 |
| Weighted average fair value of options granted | $ 22.06 | $ 26.27 | $ 26.30 | $ 25.04 |