Cover - USD ($) $ in Billions	12 Months Ended
	Apr. 30, 2021	Jun. 23, 2021	Oct. 30, 2020
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Apr. 30, 2021
Document Transition Report	false
Entity File Number	1-36820
Entity Registrant Name	Medtronic plc
Entity Incorporation, State or Country Code	L2
Entity Tax Identification Number	98-1183488
Entity Address, Address Line One	20 On Hatch, Lower Hatch Street
Entity Address, City or Town	Dublin 2
Entity Address, Postal Zip Code	D02 XH02
Entity Address, Country	IE
Country Region	353
City Area Code	1
Local Phone Number	438-1700
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 135.3
Entity Common Stock, Shares Outstanding		1,343,904,180
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement for its 2021 Annual General Meeting are incorporated by reference into Part III hereof.
Entity Central Index Key	0001613103
Current Fiscal Year End Date	--04-30
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Ordinary shares, par value $0.0001 per share
Entity Information [Line Items]
Title of 12(b) Security	Ordinary shares, par value $0.0001 per share
Trading Symbol	MDT
Security Exchange Name	NYSE
0.00% Senior Notes due 2022
Entity Information [Line Items]
Title of 12(b) Security	0.00% Senior Notes due 2022
Trading Symbol	MDT/22B
Security Exchange Name	NYSE
0.375% Senior Notes due 2023
Entity Information [Line Items]
Title of 12(b) Security	0.375% Senior Notes due 2023
Trading Symbol	MDT/23B
Security Exchange Name	NYSE
0.000% Senior Notes due 2023
Entity Information [Line Items]
Title of 12(b) Security	0.000% Senior Notes due 2023
Trading Symbol	MDT/23C
Security Exchange Name	NYSE
0.25% Senior Notes due 2025
Entity Information [Line Items]
Title of 12(b) Security	0.25% Senior Notes due 2025
Trading Symbol	MDT/25
Security Exchange Name	NYSE
0.000% Senior Notes due 2025
Entity Information [Line Items]
Title of 12(b) Security	0.000% Senior Notes due 2025
Trading Symbol	MDT/25A
Security Exchange Name	NYSE
1.125% Senior Notes due 2027
Entity Information [Line Items]
Title of 12(b) Security	1.125% Senior Notes due 2027
Trading Symbol	MDT/27
Security Exchange Name	NYSE
0.375% Senior Notes due 2028
Entity Information [Line Items]
Title of 12(b) Security	0.375% Senior Notes due 2028
Trading Symbol	MDT/28
Security Exchange Name	NYSE
1.625% Senior Notes due 2031
Entity Information [Line Items]
Title of 12(b) Security	1.625% Senior Notes due 2031
Trading Symbol	MDT/31
Security Exchange Name	NYSE
1.00% Senior Notes due 2031
Entity Information [Line Items]
Title of 12(b) Security	1.00% Senior Notes due 2031
Trading Symbol	MDT/31A
Security Exchange Name	NYSE
0.750% Senior Notes due 2032
Entity Information [Line Items]
Title of 12(b) Security	0.750% Senior Notes due 2032
Trading Symbol	MDT/32
Security Exchange Name	NYSE
2.250% Senior Notes due 2039
Entity Information [Line Items]
Title of 12(b) Security	2.250% Senior Notes due 2039
Trading Symbol	MDT/39A
Security Exchange Name	NYSE
1.50% Senior Notes due 2039
Entity Information [Line Items]
Title of 12(b) Security	1.50% Senior Notes due 2039
Trading Symbol	MDT/39B
Security Exchange Name	NYSE
1.375% Senior Notes due 2040
Entity Information [Line Items]
Title of 12(b) Security	1.375% Senior Notes due 2040
Trading Symbol	MDT/40A
Security Exchange Name	NYSE
1.75% Senior Notes due 2049
Entity Information [Line Items]
Title of 12(b) Security	1.75% Senior Notes due 2049
Trading Symbol	MDT/49
Security Exchange Name	NYSE
1.625% Senior Notes due 2050
Entity Information [Line Items]
Title of 12(b) Security	1.625% Senior Notes due 2050
Trading Symbol	MDT/50
Security Exchange Name	NYSE