Income Taxes , Income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 27, 2018	Apr. 28, 2017	Apr. 29, 2016
Current tax expense:
U.S.	$ 2,899	$ 614	$ 440
International	796	840	835
Total current tax expense	3,695	1,454	1,275
Deferred tax expense (benefit):
U.S.	45	(399)	(67)
International	(1,160)	(477)	(410)
Net deferred tax benefit	(1,115)	(876)	(477)
Income tax provision	$ 2,580	$ 578	$ 798