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Acquisitions and Acquisition-Related Items - Reconciliation of Beginning and Ending Balances of Contingent Consideration (Details) - USD ($) $ in Millions | 3 Months Ended
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Jul. 28, 2017 | Jul. 29, 2016
Reconciliation of Beginning and Ending Balances of Contingent Milestone Payments Associated with Acquisitions [Roll Forward] |  |
Beginning Balance | $ 246 | $ 377
Purchase price contingent consideration | 0 | 21
Payments | (3) | (14)
Change in fair value | (1) | (5)
Ending Balance | $ 242 | $ 379

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- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
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- Definition Contingent milestone payments in business acquisition transactions. + References No definition available. + Details
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- Definition Amount of contingent consideration arrangement resulting from business combinations. + References No definition available. + Details
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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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