Income Taxes , Income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 26, 2019	Apr. 27, 2018	Apr. 28, 2017
Current tax expense:
U.S.	$ 579	$ 2,899	$ 614
International	406	796	840
Total current tax expense	985	3,695	1,454
Deferred tax expense (benefit):
U.S.	(310)	45	(399)
International	(128)	(1,160)	(477)
Net deferred tax benefit	(438)	(1,115)	(876)
Income tax provision	$ 547	$ 2,580	$ 578