Employee Benefit Plans - Valuation of Employee Share-Based Awards - Employee Stock Purchase Rights (Details) - Employee Stock Purchase Rights - $ / shares	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	22.50%	28.30%	28.70%
Risk-free interest rate	5.00%	2.90%	2.80%
Expected dividend	3.30%	3.50%	3.60%
Expected life (in years)	1 year 3 months 18 days	1 year 2 months 12 days	1 year 2 months 12 days
Weighted-average estimated grant date fair value per share (in dollars per share)	$ 12.18	$ 11.59	$ 12.40