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Income Taxes - Statutory Federal Income Tax Rate (Detail) - USD ($) $ in Millions		12 Months Ended
		Apr. 30, 2021	Apr. 24, 2020	Apr. 26, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax computed at federal statutory rate		$ 202	$ 198	$ 266
State income taxes, net of federal benefit		23	10	16
Foreign earnings in lower tax jurisdictions		(26)	(40)	(84)
Stock-based compensation		6	(4)	(19)
Research and development credits		(13)	(16)	(17)
Global minimum tax on intangible income		19	32	22
Transition tax and related reserves		1	15	(5)
Tax charge from integration of acquired companies		35	0	0
Resolution of income tax matters	[1]	(6)	(61)	(48)
Non-taxable gain on joint venture formation		0	0	(14)
Domestic production activities deduction		0	0	(13)
Other		(9)	(9)	(5)
Provision for income taxes		$ 232	$ 125	$ 99
[1] During fiscal 2021, we recognized a tax benefit related to the lapse of statutes of limitations for certain issues on our fiscal 2016 and 2017 federal income tax returns. During fiscal 2020, we recognized a tax benefit related to the lapse of statutes of limitations on our fiscal 2014 and 2015 federal income tax returns. During fiscal 2019, the Internal Revenue Service completed the examination of our fiscal 2012 to fiscal 2013 federal income tax returns, and we recognized a tax benefit attributable to the effective settlement and the release of related tax reserves.

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