Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 28, 2022	Jan. 29, 2021	Jan. 28, 2022	Jan. 29, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 1,483	$ 1,279	$ 3,570	$ 2,264
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on investment securities	(70)	24	(114)	137
Translation adjustment	(362)	690	(963)	1,951
Net investment hedge	475	(587)	1,254	(1,863)
Net change in retirement obligations	19	9	56	28
Unrealized gain (loss) on cash flow hedges	100	(213)	369	(607)
Other comprehensive income (loss)	162	(78)	602	(354)
Comprehensive income including noncontrolling interests	1,645	1,201	4,172	1,910
Comprehensive income attributable to noncontrolling interests	(4)	(11)	(13)	(27)
Comprehensive income attributable to Medtronic	$ 1,641	$ 1,190	$ 4,159	$ 1,883