Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Summary Of Significant Accounting Policies [Line Items]
Average lease term	4 years
Financing receivable, threshold period past due	31 days
Financing receivable, threshold for not accruing interest	120 days
Depreciation and amortization expenses	$ 700	$ 700	$ 700
Advertising costs	$ 186	$ 210	$ 205
Minimum
Summary Of Significant Accounting Policies [Line Items]
Loan receivables term	1 year
Channel partners revolving short-term financing payment term	60 days
Maximum
Summary Of Significant Accounting Policies [Line Items]
Loan receivables term	3 years
Channel partners revolving short-term financing payment term	90 days