Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 24, 2026	Jan. 25, 2025	Jan. 24, 2026	Jan. 25, 2025	Jul. 26, 2025
Leases [Abstract]
Weighted-average remaining lease term (in years)	5 years 9 months 18 days		5 years 9 months 18 days		5 years 8 months 12 days
Weighted-average discount rate	4.00%		4.00%		4.10%
Sales-type lease terms, on average	4 years		4 years
Interest income, lease receivables	$ 15	$ 16	$ 31	$ 33