Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Millions	Oct. 30, 2020	Apr. 24, 2020
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)