Employee Benefit Plans - Valuation of Employee Share-Based Awards - Time-Based Restricted Stock Units (Details) - $ / shares shares in Millions	12 Months Ended
	Jul. 29, 2023	Jul. 30, 2022	Jul. 31, 2021
RESTRICTED STOCK UNITS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	70	50	48
Grant date fair value per share (in dollars per share)	$ 42.13	$ 49.68	$ 42.04
Expected dividend	3.40%	2.90%	3.30%
Range of risk-free interest rates, minimum	3.70%	0.00%	0.00%
Range of risk-free interest rates, maximum	5.70%	3.00%	0.90%
PERFORMANCE BASED RESTRICTED STOCK UNITS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	2	2	2
Grant date fair value per share (in dollars per share)	$ 40.44	$ 59.64	$ 37.91
Expected dividend		0.40%	3.60%
Range of risk-free interest rates, minimum		0.00%	0.10%
Range of risk-free interest rates, maximum		0.70%	0.40%