Employee Benefit Plans - Additional Information (Details) $ in Billions	3 Months Ended		6 Months Ended
	Jan. 29, 2022 USD ($) stock_incentive_plan shares	Jan. 23, 2021 shares	Jan. 29, 2022 USD ($) period stock_incentive_plan shares	Jan. 23, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock incentive plans (stock incentive plan) | stock_incentive_plan	1		1
Total compensation cost related to unvested share-based awards | $	$ 4.4		$ 4.4
Expected period of recognition of compensation cost			2 years 9 months 18 days
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance (in shares)	721,000,000		721,000,000
Consecutive offering period			24 months
Number of purchase periods | period			4
Purchase period			6 months
ESPP discount percentage from market price, beginning of purchase period			15.00%
Shares issued under employee purchase plan (in shares)	8,000,000	8,000,000	8,000,000	8,000,000
Shares reserved for issuance (in shares)	117,000,000		117,000,000
2005 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance (in shares)	790,000,000		790,000,000
Reduction in shares available for issuance (in shares)	1.5		1.5
Shares authorized for future grant (in shares)	216,000,000		216,000,000