Leases (Reported in Balance Sheet) (Details) - USD ($) $ in Millions	Apr. 28, 2024	Jul. 30, 2023
Operating Lease, Right-of-Use Asset	$ 283	$ 275
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Operating Lease, Liability, Current	$ 76	$ 70
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Operating Lease, Liability, Noncurrent	$ 229	$ 208
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Finance Lease, Right-of-Use Asset	$ 61	$ 27
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Plant assets, net of depreciation	Plant assets, net of depreciation
Finance Lease, Liability, Current	$ 21	$ 13
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Short-term borrowings	Short-term borrowings
Finance Lease, Liability, Noncurrent	$ 39	$ 15
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt and Lease Obligation	Long-Term Debt and Lease Obligation