Guarantor Financial Information - Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Jul. 26, 2019	Apr. 26, 2019	Jul. 27, 2018	Apr. 27, 2018
Current assets:
Cash and cash equivalents	$ 5,080	$ 4,393	$ 4,380	$ 3,669
Investments	5,603	5,455
Accounts receivable, net	5,894	6,222
Inventories, net	3,932	3,753
Intercompany receivable	0	0
Other current assets	2,196	2,144
Total current assets	22,705	21,967
Property, plant, and equipment, net	4,711	4,675
Goodwill	40,082	39,959
Other intangible assets, net	20,234	20,560
Tax assets	1,545	1,519
Investment in subsidiaries	0	0
Intercompany loans receivable	0	0
Other assets	1,991	1,014
Total assets	91,268	89,694
Current liabilities:
Current debt obligations	1,458	838
Accounts payable	1,906	1,953
Intercompany payable	0	0
Accrued compensation	1,507	2,189
Accrued income taxes	500	567
Other accrued expenses	3,147	2,925
Total current liabilities	8,518	8,472
Long-term debt	24,804	24,486
Accrued compensation and retirement benefits	1,640	1,651
Accrued income taxes	2,873	2,838
Intercompany loans payable	0	0
Deferred tax liabilities	1,346	1,278
Other liabilities	1,590	757
Total liabilities	40,771	39,482
Shareholders’ equity	50,363	50,091
Noncontrolling interests	134	121
Total equity	50,497	50,212	50,329	50,822
Total liabilities and equity	91,268	89,694
Consolidating Adjustments | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	0	0	0	0
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	(250)	(227)
Intercompany receivable	(40,678)	(28,623)
Other current assets	0	0
Total current assets	(40,928)	(28,850)
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	(204,018)	(200,493)
Intercompany loans receivable	(57,276)	(66,277)
Other assets	0	0
Total assets	(302,222)	(295,620)
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	(40,678)	(28,623)
Accrued compensation	0	0
Accrued income taxes	0	0
Other accrued expenses	0	0
Total current liabilities	(40,678)	(28,623)
Long-term debt	0	0
Accrued compensation and retirement benefits	0	0
Accrued income taxes	0	0
Intercompany loans payable	(57,276)	(66,277)
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	(97,954)	(94,900)
Shareholders’ equity	(204,268)	(200,720)
Noncontrolling interests	0	0
Total equity	(204,268)	(200,720)
Total liabilities and equity	(302,222)	(295,620)
Consolidating Adjustments | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	0	0	0	0
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Intercompany receivable	(11,151)	(8,626)
Other current assets	0	0
Total current assets	(11,151)	(8,626)
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	(187,929)	(167,560)
Intercompany loans receivable	(76,453)	(63,979)
Other assets	0	0
Total assets	(275,533)	(240,165)
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	(11,151)	(8,626)
Accrued compensation	0	0
Accrued income taxes	0	0
Other accrued expenses	0	0
Total current liabilities	(11,151)	(8,626)
Long-term debt	0	0
Accrued compensation and retirement benefits	0	0
Accrued income taxes	0	0
Intercompany loans payable	(76,453)	(63,979)
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	(87,604)	(72,605)
Shareholders’ equity	(187,929)	(167,560)
Noncontrolling interests	0	0
Total equity	(187,929)	(167,560)
Total liabilities and equity	(275,533)	(240,165)
Medtronic plc | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	0	0	0	0
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Intercompany receivable	80	40
Other current assets	16	10
Total current assets	96	50
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	65,549	64,352
Intercompany loans receivable	3,000	3,000
Other assets	0	0
Total assets	68,645	67,402
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	0	0
Accrued compensation	12	3
Accrued income taxes	0	0
Other accrued expenses	20	20
Total current liabilities	32	23
Long-term debt	0	0
Accrued compensation and retirement benefits	0	0
Accrued income taxes	10	10
Intercompany loans payable	18,240	17,278
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	18,282	17,311
Shareholders’ equity	50,363	50,091
Noncontrolling interests	0	0
Total equity	50,363	50,091
Total liabilities and equity	68,645	67,402
Medtronic plc | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	0	0	0	0
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Intercompany receivable	80	40
Other current assets	16	10
Total current assets	96	50
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	65,549	64,352
Intercompany loans receivable	3,000	3,000
Other assets	0	0
Total assets	68,645	67,402
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	0	0
Accrued compensation	12	3
Accrued income taxes	0	0
Other accrued expenses	20	20
Total current liabilities	32	23
Long-term debt	0	0
Accrued compensation and retirement benefits	0	0
Accrued income taxes	10	10
Intercompany loans payable	18,240	17,278
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	18,282	17,311
Shareholders’ equity	50,363	50,091
Noncontrolling interests	0	0
Total equity	50,363	50,091
Total liabilities and equity	68,645	67,402
Subsidiary Issuer | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	15	18	24	20
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	184	188
Intercompany receivable	9,837	9,407
Other current assets	212	190
Total current assets	10,248	9,803
Property, plant, and equipment, net	1,508	1,480
Goodwill	2,009	2,009
Other intangible assets, net	96	99
Tax assets	494	568
Investment in subsidiaries	72,421	71,129
Intercompany loans receivable	21	21
Other assets	308	216
Total assets	87,105	85,325
Current liabilities:
Current debt obligations	1,033	500
Accounts payable	492	481
Intercompany payable	21,093	11,971
Accrued compensation	532	913
Accrued income taxes	0	0
Other accrued expenses	467	331
Total current liabilities	23,617	14,196
Long-term debt	9,780	14,418
Accrued compensation and retirement benefits	1,070	1,069
Accrued income taxes	709	692
Intercompany loans payable	9,011	12,613
Deferred tax liabilities	0	0
Other liabilities	223	133
Total liabilities	44,410	43,121
Shareholders’ equity	42,695	42,204
Noncontrolling interests	0	0
Total equity	42,695	42,204
Total liabilities and equity	87,105	85,325
Subsidiary Issuer | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	0	0	0	0
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Intercompany receivable	0	0
Other current assets	0	0
Total current assets	0	0
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	57,719	39,557
Intercompany loans receivable	3,989	4,119
Other assets	0	0
Total assets	61,708	43,676
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	1,316	1,308
Accrued compensation	0	0
Accrued income taxes	0	0
Other accrued expenses	8	11
Total current liabilities	1,324	1,319
Long-term debt	1,311	1,354
Accrued compensation and retirement benefits	0	0
Accrued income taxes	0	0
Intercompany loans payable	27,127	9,320
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	29,762	11,993
Shareholders’ equity	31,946	31,683
Noncontrolling interests	0	0
Total equity	31,946	31,683
Total liabilities and equity	61,708	43,676
Subsidiary Guarantors | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	93	1	390	1
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Intercompany receivable	5	6
Other current assets	3	3
Total current assets	101	10
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	66,048	65,012
Intercompany loans receivable	29,017	27,858
Other assets	0	0
Total assets	95,166	92,880
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	9,662	7,200
Accrued compensation	0	0
Accrued income taxes	0	0
Other accrued expenses	39	53
Total current liabilities	9,701	7,253
Long-term debt	13,601	8,621
Accrued compensation and retirement benefits	0	0
Accrued income taxes	0	0
Intercompany loans payable	13,320	19,682
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	36,622	35,556
Shareholders’ equity	58,544	57,324
Noncontrolling interests	0	0
Total equity	58,544	57,324
Total liabilities and equity	95,166	92,880
Subsidiary Guarantors | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	93	1	390	1
Investments	0	0
Accounts receivable, net	0	0
Inventories, net	0	0
Intercompany receivable	1,381	1,374
Other current assets	3	3
Total current assets	1,477	1,378
Property, plant, and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Tax assets	0	0
Investment in subsidiaries	64,661	63,651
Intercompany loans receivable	29,017	27,858
Other assets	0	0
Total assets	95,155	92,887
Current liabilities:
Current debt obligations	0	0
Accounts payable	0	0
Intercompany payable	9,662	7,199
Accrued compensation	0	0
Accrued income taxes	0	0
Other accrued expenses	44	60
Total current liabilities	9,706	7,259
Long-term debt	13,601	8,621
Accrued compensation and retirement benefits	0	0
Accrued income taxes	0	0
Intercompany loans payable	13,320	19,682
Deferred tax liabilities	0	0
Other liabilities	1	1
Total liabilities	36,628	35,563
Shareholders’ equity	58,527	57,324
Noncontrolling interests	0	0
Total equity	58,527	57,324
Total liabilities and equity	95,155	92,887
Subsidiary Non-guarantors | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	4,972	4,374	3,966	3,648
Investments	5,603	5,455
Accounts receivable, net	5,894	6,222
Inventories, net	3,998	3,792
Intercompany receivable	30,756	19,170
Other current assets	1,965	1,941
Total current assets	53,188	40,954
Property, plant, and equipment, net	3,203	3,195
Goodwill	38,073	37,950
Other intangible assets, net	20,138	20,461
Tax assets	1,051	951
Investment in subsidiaries	0	0
Intercompany loans receivable	25,238	35,398
Other assets	1,683	798
Total assets	142,574	139,707
Current liabilities:
Current debt obligations	425	338
Accounts payable	1,414	1,472
Intercompany payable	9,923	9,452
Accrued compensation	963	1,273
Accrued income taxes	500	567
Other accrued expenses	2,621	2,521
Total current liabilities	15,846	15,623
Long-term debt	1,423	1,447
Accrued compensation and retirement benefits	570	582
Accrued income taxes	2,154	2,136
Intercompany loans payable	16,705	16,704
Deferred tax liabilities	1,346	1,278
Other liabilities	1,367	624
Total liabilities	39,411	38,394
Shareholders’ equity	103,029	101,192
Noncontrolling interests	134	121
Total equity	103,163	101,313
Total liabilities and equity	142,574	139,707
Subsidiary Non-guarantors | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	4,987	4,392	$ 3,990	$ 3,668
Investments	5,603	5,455
Accounts receivable, net	5,894	6,222
Inventories, net	3,932	3,753
Intercompany receivable	9,690	7,212
Other current assets	2,177	2,131
Total current assets	32,283	29,165
Property, plant, and equipment, net	4,711	4,675
Goodwill	40,082	39,959
Other intangible assets, net	20,234	20,560
Tax assets	1,545	1,519
Investment in subsidiaries	0	0
Intercompany loans receivable	40,447	29,002
Other assets	1,991	1,014
Total assets	141,293	125,894
Current liabilities:
Current debt obligations	1,458	838
Accounts payable	1,906	1,953
Intercompany payable	173	119
Accrued compensation	1,495	2,186
Accrued income taxes	500	567
Other accrued expenses	3,075	2,834
Total current liabilities	8,607	8,497
Long-term debt	9,892	14,511
Accrued compensation and retirement benefits	1,640	1,651
Accrued income taxes	2,863	2,828
Intercompany loans payable	17,766	17,699
Deferred tax liabilities	1,346	1,278
Other liabilities	1,589	756
Total liabilities	43,703	47,220
Shareholders’ equity	97,456	78,553
Noncontrolling interests	134	121
Total equity	97,590	78,674
Total liabilities and equity	$ 141,293	$ 125,894