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Derivatives and Currency Exchange Risk Management - Amount of (Gains) Losses Recognized in Consolidated Statements of Income, Cash Flow Hedges (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 30, 2020 | Oct. 25, 2019 | Oct. 30, 2020 | Oct. 25, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |
Other operating expense, net | $ 149 | $ 149 | $ 35 | $ 127
Cash flow hedging | Currency exchange rate contracts | Other operating expense, net |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Amount of gain reclassified from AOCI into income | $ (2) | $ (68) | $ (55) | $ (125)

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