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Supplemental Financial Statement Data (Schedule of Statement of Earnings) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 30, 2023
May 01, 2022
Apr. 30, 2023
May 01, 2022
Disclosure Text Block Supplement [Abstract]        
Amortization of Intangible Assets $ 10 $ 10 $ 31 $ 31
Net periodic benefits expense (income), other than the service cost 14 1 10 (43)
Other (1) (1) 0 2
Other expenses / (income) $ 23 $ 10 $ 41 $ (10)