Supplemental Financial Statement Data (Schedule of Statement of Earnings) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 30, 2022	Jan. 31, 2021	Jan. 30, 2022	Jan. 31, 2021
Disclosure Text Block Supplement [Abstract]
Amortization of Intangible Assets	$ 10	$ 11	$ 21	$ 21
Net periodic benefits income, other than the service cost	(31)	(50)	(44)	(75)
Transition services fees	0	(8)	0	(12)
Other	2	2	3	3
Other expenses / (income)	$ (19)	$ (45)	$ (20)	$ (63)