Stockholders' Equity and Stock-Based Compensation - Assumptions to Value Stock Options (Details) - USD ($)	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 24, 2022
Assumptions:
Risk-free interest rates	4.40%	4.30%	1.10%
Expected life (in years)	4 years 9 months 18 days	4 years 9 months 18 days	4 years 9 months 18 days
Expected volatility	33.40%	33.90%	34.20%
Dividend yield	$ 0	$ 0	$ 0
ESPP
Assumptions:
Risk-free interest rates	5.29%	4.10%	0.96%
Expected life (in years)	6 months	6 months	6 months
Expected volatility	33.40%	34.00%	34.00%
Dividend yield	$ 0	$ 0	$ 0