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Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions | Jan. 27, 2024 | Jul. 29, 2023
--- | --- | ---
Assets: |  |
Available-for-sale debt investments: | $ 11,530 | $ 15,592
Marketable equity securities | 426 | 431
Derivative assets | 50 | 32
Total | 24,672 | 25,214
Liabilities: |  |
Derivative liabilities | 70 | 75
Total | 70 | 75
Money market funds |  |
Assets: |  |
Other current assets: | 563 | 188
Other assets: | 938 | 1,313
U.S. government securities |  |
Assets: |  |
Available-for-sale debt investments: | 2,397 | 3,526
U.S. government agency securities |  |
Assets: |  |
Available-for-sale debt investments: | 352 | 423
Non-U.S. government and agency securities |  |
Assets: |  |
Available-for-sale debt investments: | 364 | 363
Corporate debt securities |  |
Assets: |  |
Available-for-sale debt investments: | 5,140 | 6,914
U.S. agency mortgage-backed securities |  |
Assets: |  |
Available-for-sale debt investments: | 1,931 | 2,205
Commercial paper |  |
Assets: |  |
Available-for-sale debt investments: | 828 | 1,484
Certificates of deposit |  |
Assets: |  |
Available-for-sale debt investments: | 518 | 677
Money market funds |  |
Assets: |  |
Cash equivalents: | 10,103 | 6,496
Commercial paper |  |
Assets: |  |
Cash equivalents: | 1,023 | 1,090
Certificates of deposit |  |
Assets: |  |
Cash equivalents: | 2 | 47
Corporate debt securities |  |
Assets: |  |
Cash equivalents: | 30 | 25
Non-U.S. government and agency securities |  |
Assets: |  |
Cash equivalents: | 7 | 0
Level 1 |  |
Assets: |  |
Marketable equity securities | 426 | 431
Derivative assets | 0 | 0
Total | 12,030 | 8,428
Liabilities: |  |
Derivative liabilities | 0 | 0
Total | 0 | 0
Level 1 | Money market funds |  |
Assets: |  |
Other current assets: | 563 | 188
Other assets: | 938 | 1,313
Level 1 | U.S. government securities |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | U.S. government agency securities |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | Non-U.S. government and agency securities |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | Corporate debt securities |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | U.S. agency mortgage-backed securities |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | Commercial paper |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | Certificates of deposit |  |
Assets: |  |
Available-for-sale debt investments: | 0 | 0
Level 1 | Money market funds |  |
Assets: |  |
Cash equivalents: | 10,103 | 6,496
Level 1 | Commercial paper |  |
Assets: |  |
Cash equivalents: | 0 | 0
Level 1 | Certificates of deposit |  |
Assets: |  |
Cash equivalents: | 0 | 0
Level 1 | Corporate debt securities |  |
Assets: |  |
Cash equivalents: | 0 | 0
Level 1 | Non-U.S. government and agency securities |  |
Assets: |  |
Cash equivalents: | 0 | 0
Level 2 |  |
Assets: |  |
Marketable equity securities | 0 | 0
Derivative assets | 50 | 32
Total | 12,642 | 16,786
Liabilities: |  |
Derivative liabilities | 70 | 75
Total | 70 | 75
Level 2 | Money market funds |  |
Assets: |  |
Other current assets: | 0 | 0
Other assets: | 0 | 0
Level 2 | U.S. government securities |  |
Assets: |  |
Available-for-sale debt investments: | 2,397 | 3,526
Level 2 | U.S. government agency securities |  |
Assets: |  |
Available-for-sale debt investments: | 352 | 423
Level 2 | Non-U.S. government and agency securities |  |
Assets: |  |
Available-for-sale debt investments: | 364 | 363
Level 2 | Corporate debt securities |  |
Assets: |  |
Available-for-sale debt investments: | 5,140 | 6,914
Level 2 | U.S. agency mortgage-backed securities |  |
Assets: |  |
Available-for-sale debt investments: | 1,931 | 2,205
Level 2 | Commercial paper |  |
Assets: |  |
Available-for-sale debt investments: | 828 | 1,484
Level 2 | Certificates of deposit |  |
Assets: |  |
Available-for-sale debt investments: | 518 | 677
Level 2 | Money market funds |  |
Assets: |  |
Cash equivalents: | 0 | 0
Level 2 | Commercial paper |  |
Assets: |  |
Cash equivalents: | 1,023 | 1,090
Level 2 | Certificates of deposit |  |
Assets: |  |
Cash equivalents: | 2 | 47
Level 2 | Corporate debt securities |  |
Assets: |  |
Cash equivalents: | 30 | 25
Level 2 | Non-U.S. government and agency securities |  |
Assets: |  |
Cash equivalents: | $ 7 | $ 0

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