Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions		12 Months Ended
		Aug. 01, 2021	Aug. 02, 2020	Jul. 28, 2019
Beginning Balance		$ 14	$ 13	$ 18
Charged to (Reduction in) Cost and Expense		137	142	131
Deductions		(139)	(140)	(136)
Divestiture		0	(1)	0
Ending Balance		12	14	13
Cash Discounts [Member]
Beginning Balance		6	6	6
Charged to (Reduction in) Cost and Expense		137	139	132
Deductions		(137)	(139)	(132)
Divestiture		0	0	0
Ending Balance		6	6	6
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Beginning Balance		4	3	3
Charged to (Reduction in) Cost and Expense		0	2	1
Deductions		(2)	0	(1)
Divestiture		0	(1)	0
Ending Balance		2	4	3
Sales Returns and Allowances [Member]
Beginning Balance	[1]	4	4	9
Charged to (Reduction in) Cost and Expense	[1]	0	1	(2)
Deductions	[1]	0	(1)	(3)
Divestiture	[1]	0	0	0
Ending Balance	[1]	4	4	4
Actual Returns		$ 100	$ 99	$ 107
Maximum [Member] | Sales Returns and Allowances [Member]
Percentage Of Actual Returns		2.00%	2.00%	2.00%

[1] The returns reserve is evaluated quarterly and adjusted accordingly. During each period, returns are charged to net sales in the Consolidated Statements of Earnings as incurred. Actual returns were approximately $100 in 2021, $99 in 2020, and $107 in 2019, or less than 2% of net sales