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Stockholders' Equity - Summary of Activities Related to Dividends on Common Stock (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Apr. 29, 2016 | Apr. 24, 2015 | Apr. 25, 2014
Dividends, Common Stock [Abstract] |  |  |
Dividends per share declared | $ 0.72 | $ 0.66 | $ 0.60
Dividend payments | $ 210 | $ 208 | $ 202
Additional Paid-in Capital |  |  |
Dividends, Common Stock [Abstract] |  |  |
Dividend payments | 125 | 52 | 50
Retained Earnings |  |  |
Dividends, Common Stock [Abstract] |  |  |
Dividend payments | $ 85 | $ 156 | $ 152

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
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