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Employee Benefit Plans - Summary of Share-Based Compensation Expense (Details) - USD ($) $ in Millions | 3 Months Ended
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Oct. 25, 2025 | Oct. 26, 2024
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | $ 1,055 | $ 827
Income tax benefit for share-based compensation | 241 | 174
Share-based compensation expense in cost of sales |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 150 | 131
Research and development |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 484 | 354
Sales and marketing |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 269 | 210
General and administrative |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 131 | 115
Restructuring and other charges |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 21 | 17
Share-based compensation expense in operating expenses |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 905 | 696
Product | Share-based compensation expense in cost of sales |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | 68 | 57
Services | Share-based compensation expense in cost of sales |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Total share-based compensation expense | $ 82 | $ 74

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