v3.19.1

Available-for-Sale Debt Investments and Equity Investments (Summary of Gains and Losses Recognized on Marketable and Non-marketable Equity Securities) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 27, 2019 | Apr. 27, 2019
Adjustments to non-marketable equity securities measured using the measurement alternative: |  |
Upward adjustments | $ 9 | $ 33
Downward adjustments, including impairments | (4) | (22)
Net upward adjustments | 5 | 11
Net gains and losses recognized during the period on equity investments | 3 | 78
Less: Net gains and losses recognized on equity investments sold | (44) | (51)
Unrealized gains and losses recognized during reporting period on equity securities still held at the reporting date | $ (41) | $ 27

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