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Income Taxes - Statutory Federal Income Tax Rate (Detail) - USD ($) $ in Millions | 12 Months Ended
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Apr. 27, 2018 | Apr. 28, 2017 | Apr. 29, 2016
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Tax computed at federal statutory rate | $ 356 | $ 233 | $ 121
State income taxes, net of federal benefit | 17 | 9 | (4)
Foreign earnings in lower tax jurisdictions | (108) | (100) | (81)
Stock-based compensation | (23) | 16 | 13
Research and development credits | (10) | (8) | (14)
Resolution of income tax examinations | 0 | 0 | 20
Domestic production activities deduction | (7) | (4) | (10)
Tax rate changes | 126 | 5 | 1
Transition tax | 732 | 0 | 0
Other | 7 | 5 | 6
Provision for income taxes | 1,090 | 156 | 116
SolidFire |  |  |
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Tax charge from integration of intellectual properties from the SolidFire acquisition | $ 0 | $ 0 | $ 64

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 + Details
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