Borrowings - Schedule of Short-Term Debt (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024
Short-term Debt [Line Items]
Short-term debt	$ 5,232	$ 11,341
Current portion of senior notes
Short-term Debt [Line Items]
Short-term debt	$ 1,749	$ 488
Effective Rate	4.15%	6.66%
Commercial paper
Short-term Debt [Line Items]
Short-term debt	$ 3,482	$ 10,853
Effective Rate	4.37%	5.43%
Current portion of other debt
Short-term Debt [Line Items]
Short-term debt	$ 1	$ 0
Effective Rate	1.13%	0.00%