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Segment Information and Major Customers - Additional Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 29, 2022
USD ($)
Jan. 23, 2021
USD ($)
Jan. 29, 2022
USD ($)
segment
Jan. 23, 2021
USD ($)
Segment Reporting Information [Line Items]        
Number of geographic segments | segment     3  
Revenue $ 12,720 $ 11,960 $ 25,620 $ 23,889
United States        
Segment Reporting Information [Line Items]        
Revenue $ 6,400 $ 6,200 $ 13,200 $ 12,700