Fair Value - Additional Information (Details) - USD ($) $ in Millions	Jan. 25, 2025	Jul. 27, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Noncurrent	$ 3,240	$ 3,376
Borrowings, carrying value	20,122	20,109
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings, fair value	20,200	20,400
Loan Receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Noncurrent	$ 2,650	$ 2,737