Supplemental Financial Statement Data (Other Noncurrent Liabilities) (Details) - USD ($) $ in Millions	Jul. 31, 2022	Aug. 01, 2021
Other Liabilities, Noncurrent [Abstract]
Liability, Defined Benefit Pension Plan, Noncurrent	$ 107	$ 142
Liability, Other Retirement Benefits, Noncurrent	153	199
Operating Lease, Liability, Noncurrent	177	180
Deferred Compensation Liability, Noncurrent	81	92
Liability, Uncertain Tax Positions, Noncurrent	15	20
Other Liabilities, Noncurrent	70	72
Other liabilities	$ 603	$ 705
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities