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Revenue - Allowance for Accounts Receivable (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 27, 2024
Jan. 28, 2023
Jan. 27, 2024
Jan. 28, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit loss at beginning of period $ 82 $ 88 $ 85 $ 83
Provisions (benefits) 9 3 11 14
Recoveries (write-offs), net (12) (5) (17) (11)
Allowance for credit loss at end of period $ 79 $ 86 $ 79 $ 86