Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024	Jul. 27, 2024
Leases [Abstract]
Weighted-average remaining lease term (in years)	5 years 6 months		5 years 6 months		4 years 10 months 24 days
Weighted-average discount rate	4.00%		4.00%		4.00%
Sales-type lease terms, on average	4 years		4 years
Interest income, lease receivables	$ 16	$ 18	$ 49	$ 48
Operating lease income	$ 9	$ 14	$ 29	$ 45