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Financing Receivables - Summary of Allowances for Credit Loss and Related Financing Receivables (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 27, 2024
Jan. 28, 2023
Jan. 27, 2024
Jan. 28, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit loss, beginning of period $ 74 $ 120 $ 72 $ 126
Provisions (benefits) (1) (4) 1 (8)
Recoveries (write-offs), net (4)   (4)  
Other   (3)   (5)
Allowance for credit loss, end of period 69 113 69 113
Loan Receivables        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit loss, beginning of period 58 101 53 103
Provisions (benefits) (1) (3) 4 (4)
Recoveries (write-offs), net (4)   (4)  
Other   (4)   (5)
Allowance for credit loss, end of period 53 94 53 94
Lease Receivables        
Financing Receivable, Allowance for Credit Loss [Roll Forward]        
Allowance for credit loss, beginning of period 16 19 19 23
Provisions (benefits) 0 (1) (3) (4)
Recoveries (write-offs), net 0   0  
Other   1   0
Allowance for credit loss, end of period $ 16 $ 19 $ 16 $ 19