Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Operating Loss Carryforwards [Line Items]
Undistributed earnings of certain foreign subsidiaries on which tax is not provided	$ 6,500
Unrecognized deferred income tax liability	681
Gross reduction in unrecognized tax benefits	53	$ 1,063	$ 69
Unrecognized tax benefits that would affect the effective tax rate if realized	1,500
Net interest expense recognized on unrecognized tax benefits	21	27	33
Accrual for interest and penalties	401	523	$ 486
Unrecognized tax benefit that could be reduced in next 12 months	100
Tax credit carryforward, valuation allowance	878
Settled Litigation | Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Net benefit	55	145
Decrease in interest expense	18	53
Gross reduction in unrecognized tax benefits	245	$ 1,100
Domestic Tax Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,400
Tax credit carryforward	309
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,900
Operating loss carryforwards, valuation allowance	10
Tax credit carryforward	1,900
Foreign Tax Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	531
Operating loss carryforwards, valuation allowance	86
Tax credit carryforward	$ 11