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Stock-based Compensation (Summary of Stock-based Compensation Expense) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 30, 2023
May 01, 2022
Apr. 30, 2023
May 01, 2022
Share-Based Payment Arrangement [Abstract]        
Total pre-tax stock-based compensation expense $ 17 $ 15 $ 48 $ 46
Tax-related benefits $ 3 $ 3 $ 9 $ 8