Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jul. 31, 2020	Jul. 26, 2019
Income Statement [Abstract]
Net sales	$ 6,507	$ 7,493
Costs and expenses:
Cost of products sold	2,505	2,366
Research and development expense	621	587
Selling, general, and administrative expense	2,417	2,543
Amortization of intangible assets	440	440
Restructuring charges, net	53	47
Certain litigation charges, net	(88)	47
Other operating income, net	(114)	(22)
Operating profit	673	1,485
Other non-operating income, net	(82)	(101)
Interest expense	171	609
Income before income taxes	584	977
Income tax provision	93	100
Net income	491	877
Net income attributable to noncontrolling interests	(4)	(13)
Net income attributable to Medtronic	$ 487	$ 864
Basic earnings per share (usd per share)	$ 0.36	$ 0.64
Diluted earnings per share (usd per share)	$ 0.36	$ 0.64
Basic weighted average shares outstanding (shares)	1,341.9	1,340.8
Diluted weighted average shares outstanding (shares)	1,350.0	1,351.9