Leases (Reported in Balance Sheet) (Details) - USD ($) $ in Millions	Jul. 28, 2024	Jul. 30, 2023
Leases [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating Lease, Right-of-Use Asset	$ 333	$ 275
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued liabilities	Accrued liabilities
Operating Lease, Liability, Current	$ 90	$ 70
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Operating Lease, Liability, Noncurrent	$ 268	$ 208
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Plant assets, net of depreciation	Plant assets, net of depreciation
Finance Lease, Right-of-Use Asset	$ 72	$ 27
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Short-term borrowings	Short-term borrowings
Finance Lease, Liability, Current	$ 25	$ 13
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term Debt and Lease Obligation	Long-term Debt and Lease Obligation
Finance Lease, Liability, Noncurrent	$ 46	$ 15