Borrowings - Schedule of Short-Term Debt (Details) - USD ($) $ in Millions	Jan. 24, 2026	Jul. 26, 2025
Short-term Debt [Line Items]
Short-term debt	$ 8,719	$ 5,232
Senior Notes
Short-term Debt [Line Items]
Short-term debt	$ 3,250	$ 1,749
Effective Rate	3.41%	4.15%
Commercial paper
Short-term Debt [Line Items]
Short-term debt	$ 5,469	$ 3,482
Effective Rate	3.88%	4.37%
Current portion of other debt
Short-term Debt [Line Items]
Short-term debt	$ 0	$ 1
Effective Rate	0.00%	1.13%