Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Leases [Abstract]
Weighted-average remaining lease term (in years)	5 years 8 months 12 days	4 years 10 months 24 days
Weighted-average discount rate	4.10%	4.00%
Sales-type lease term, on average	4 years
Interest income, lease receivables	$ 66	$ 65	$ 51
Operating lease income	$ 37	$ 58	$ 73
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Total revenue