Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Apr. 24, 2020	Apr. 26, 2019	Apr. 27, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 4,806	$ 4,650	$ 3,095
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on investment securities	45	102	(103)
Translation adjustment	(829)	(1,375)	1,184
Net investment hedge	405	88	0
Net change in retirement obligations	(544)	(191)	167
Unrealized (loss) gain on cash flow hedges	72
Unrealized (loss) gain on cash flow hedges		401	(218)
Other comprehensive (loss) income	(851)	(975)	1,030
Comprehensive income including noncontrolling interests	3,955	3,675	4,125
Comprehensive (income) loss attributable to noncontrolling interests	(15)	(16)	9
Comprehensive income attributable to Medtronic	$ 3,940	$ 3,659	$ 4,134