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Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Millions | Oct. 30, 2020 | Apr. 24, 2020
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 28,605 | $ 28,244
Accumulated Amortization | (10,633) | (9,704)
IPR&D |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Gross Carrying Amount, Indefinite-lived | 440 | 523
Customer-related |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 17,017 | 16,963
Accumulated Amortization | (5,567) | (5,065)
Purchased technology and patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 11,041 | 10,742
Accumulated Amortization | (4,767) | (4,354)
Trademarks and tradenames |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 469 | 464
Accumulated Amortization | (241) | (232)
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 78 | 75
Accumulated Amortization | $ (58) | $ (53)

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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