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Income Taxes - Deferred Income Taxes - Undistributed Earnings from Foreign Subsidiaries - Narrative (Detail) - USD ($) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 29, 2017 | Apr. 28, 2019 | Oct. 28, 2018 | Apr. 29, 2018
Income Taxes [Line Items] |  |  |  |
Deferred tax liability, undistributed earnings from foreign subsidiaries | $ 322 |  | $ 3,100 | $ 4,300
U.S. income and foreign withholding taxes | 42,400 |  |  |
U.S. foreign income tax credits | $ 42,100 |  |  |
Scenario, Forecast [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Dividends received deduction percentage for earnings and profits received from foreign corporation |  | 100.00% |  |
Dividends received deduction, foreign corporation ownership percentage |  | 10.00% |  |

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- Definition The ownership percentage of a foreign corporation under the dividends received deduction. + References No definition available. + Details
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