Short-term Borrowings and Long-term Debt (Schedule of Long-term Debt Instruments) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 28, 2024	Jul. 30, 2023
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 2,500
Finance Lease, Liability, Noncurrent		46	$ 15
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	[1]	2	0
Long Term Debt And Finance Lease Obligations Aggregate		6,911	4,498
Long-term Debt, Current Maturities		1,150	0
Long-term Debt and Lease Obligation		$ 5,761	$ 4,498
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Long-term Debt and Lease Obligation	Long-term Debt and Lease Obligation
3.95% notes, due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.95%
Debt Instrument, Maturity Date		Mar. 15, 2025
Long-term Debt, Gross		$ 850	$ 850
3.30% notes, due 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.30%
Debt Instrument, Maturity Date		Mar. 19, 2025
Long-term Debt, Gross		$ 300	300
Variable Interest Rate due 2025
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis		Variable-rate
Debt Instrument, Maturity Date		Nov. 15, 2025
Long-term Debt, Gross		$ 400	500
5.30% notes, due 2026
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.30%
Debt Instrument, Maturity Date		Mar. 20, 2026
Long-term Debt, Gross		$ 400	0
5.20% notes, due 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.20%
Debt Instrument, Maturity Date		Mar. 19, 2027
Long-term Debt, Gross		$ 500	0
4.15% notes, due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.15%
Debt Instrument, Maturity Date		Mar. 15, 2028
Long-term Debt, Gross		$ 1,000	1,000
5.20% notes, due 2029
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.20%
Debt Instrument, Maturity Date		Mar. 21, 2029
Long-term Debt, Gross		$ 600	0
2.375% notes, due 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.375%
Debt Instrument, Maturity Date		Apr. 24, 2030
Long-term Debt, Gross		$ 500	500
5.40% notes, due 2034
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.40%
Debt Instrument, Maturity Date		Mar. 21, 2034
Long-term Debt, Gross		$ 1,000	0
3.80% notes, due 2043
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.80%
Debt Instrument, Maturity Date		Aug. 02, 2042
Long-term Debt, Gross		$ 163	163
4.80% notes, due 2048
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.80%
Debt Instrument, Maturity Date		Mar. 15, 2048
Long-term Debt, Gross		$ 700	700
3.125% notes, due 2050
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.125%
Debt Instrument, Maturity Date		Apr. 24, 2050
Long-term Debt, Gross		$ 500	500
Long-term Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	[2]	$ 48	$ 30

[1] Includes unamortized net discount/premium on debt issuances and debt issuance costs.

[2] Includes unamortized net discount/premium on debt issuances and debt issuance costs.