Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 30, 2022	Jul. 31, 2021	Jul. 25, 2020
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
Unrecognized tax benefits that would affect the effective tax rate if realized	2,200
Net interest expense recognized on unrecognized tax benefits	33	$ 74	$ 104
Accrual for interest and penalties	486	$ 444	340
Unrecognized tax benefit that could be reduced in next 12 months	1,000
Tax credit carryforward, valuation allowance	648
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	302
Tax credit carryforward	6
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,100
Operating loss carryforwards, valuation allowance	10
Tax credit carryforward	1,600
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	580
Operating loss carryforwards, valuation allowance	98
Tax credit carryforward	$ 4
Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Income tax examination, benefit from settlement			102
Internal Revenue Service (IRS) | Interest expense
Operating Loss Carryforwards [Line Items]
Income tax examination, benefit from settlement			$ 4