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Supplemental Financial Information - Summary of Components of Deferred Revenue and Financed Unearned Services Revenue (Detail) - USD ($) $ in Millions | Jan. 28, 2022 | Apr. 30, 2021
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Contract With Customer Liability [Line Items] |  |
Deferred revenue and financed unearned services revenue | $ 3,969 | $ 4,003
Short-term | 2,063 | 2,062
Long-term | 1,906 | 1,941
Deferred product revenue |  |
Contract With Customer Liability [Line Items] |  |
Deferred revenue and financed unearned services revenue | 49 | 59
Deferred services revenue |  |
Contract With Customer Liability [Line Items] |  |
Deferred revenue and financed unearned services revenue | 3,857 | 3,873
Financed unearned services revenue |  |
Contract With Customer Liability [Line Items] |  |
Deferred revenue and financed unearned services revenue | $ 63 | $ 71

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