Guarantor Financial Information - Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Oct. 25, 2019	Jul. 26, 2019	Apr. 26, 2019	Oct. 26, 2018	Jul. 27, 2018	Apr. 27, 2018
Current assets:
Cash and cash equivalents	$ 3,962		$ 4,393
Investments	6,436		5,455
Accounts receivable, net	6,118		6,222
Inventories, net	4,042		3,753
Intercompany receivable	0		0
Other current assets	2,095		2,144
Total current assets	22,653		21,967
Property, plant, and equipment, net	4,756		4,675
Goodwill	39,952		39,959
Other intangible assets, net	19,775		20,560
Tax assets	1,804		1,519
Investment in subsidiaries	0		0
Intercompany loans receivable	0		0
Other assets	2,113		1,014
Total assets	91,053		89,694
Current liabilities:
Current debt obligations	875		838
Accounts payable	1,965		1,953
Intercompany payable	0		0
Accrued compensation	1,773		2,189
Accrued income taxes	442		567
Other accrued expenses	3,115		2,925
Total current liabilities	8,170		8,472
Long-term debt	24,752		24,486
Accrued compensation and retirement benefits	1,573		1,651
Accrued income taxes	2,705		2,838
Intercompany loans payable	0		0
Deferred tax liabilities	1,376		1,278
Other liabilities	1,758		757
Total liabilities	40,334		39,482
Shareholders’ equity	50,578		50,091
Noncontrolling interests	141		121
Total equity	50,719	$ 50,497	50,212	$ 49,714	$ 50,329	$ 50,822
Total liabilities and equity	91,053		89,694
Consolidating Adjustments | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	0		0
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	(237)		(227)
Intercompany receivable	(41,851)		(28,623)
Other current assets	0		0
Total current assets	(42,088)		(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	(206,834)		(200,493)
Intercompany loans receivable	(58,381)		(66,277)
Other assets	0		0
Total assets	(307,303)		(295,620)
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	(41,851)		(28,623)
Accrued compensation	0		0
Accrued income taxes	0		0
Other accrued expenses	0		0
Total current liabilities	(41,851)		(28,623)
Long-term debt	0		0
Accrued compensation and retirement benefits	0		0
Accrued income taxes	0		0
Intercompany loans payable	(58,381)		(66,277)
Deferred tax liabilities	0		0
Other liabilities	0		0
Total liabilities	(100,232)		(94,900)
Shareholders’ equity	(207,071)		(200,720)
Noncontrolling interests	0		0
Total equity	(207,071)		(200,720)
Total liabilities and equity	(307,303)		(295,620)
Consolidating Adjustments | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	0		0
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	0		0
Intercompany receivable	(12,221)		(8,626)
Other current assets	0		0
Total current assets	(12,221)		(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	(191,199)		(167,560)
Intercompany loans receivable	(77,623)		(63,979)
Other assets	0		0
Total assets	(281,043)		(240,165)
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	(12,221)		(8,626)
Accrued compensation	0		0
Accrued income taxes	0		0
Other accrued expenses	0		0
Total current liabilities	(12,221)		(8,626)
Long-term debt	0		0
Accrued compensation and retirement benefits	0		0
Accrued income taxes	0		0
Intercompany loans payable	(77,623)		(63,979)
Deferred tax liabilities	0		0
Other liabilities	0		0
Total liabilities	(89,844)		(72,605)
Shareholders’ equity	(191,199)		(167,560)
Noncontrolling interests	0		0
Total equity	(191,199)		(167,560)
Total liabilities and equity	(281,043)		(240,165)
Medtronic plc | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	0		0
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	0		0
Intercompany receivable	109		40
Other current assets	7		10
Total current assets	116		50
Property, plant, and equipment, net	0		0
Goodwill	0		0
Other intangible assets, net	0		0
Tax assets	0		0
Investment in subsidiaries	66,705		64,352
Intercompany loans receivable	3,000		3,000
Other assets	0		0
Total assets	69,821		67,402
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	0		0
Accrued compensation	6		3
Accrued income taxes	0		0
Other accrued expenses	21		20
Total current liabilities	27		23
Long-term debt	0		0
Accrued compensation and retirement benefits	0		0
Accrued income taxes	10		10
Intercompany loans payable	19,206		17,278
Deferred tax liabilities	0		0
Other liabilities	0		0
Total liabilities	19,243		17,311
Shareholders’ equity	50,578		50,091
Noncontrolling interests	0		0
Total equity	50,578		50,091
Total liabilities and equity	69,821		67,402
Medtronic plc | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	0		0
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	0		0
Intercompany receivable	109		40
Other current assets	7		10
Total current assets	116		50
Property, plant, and equipment, net	0		0
Goodwill	0		0
Other intangible assets, net	0		0
Tax assets	0		0
Investment in subsidiaries	66,705		64,352
Intercompany loans receivable	3,000		3,000
Other assets	0		0
Total assets	69,821		67,402
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	0		0
Accrued compensation	6		3
Accrued income taxes	0		0
Other accrued expenses	21		20
Total current liabilities	27		23
Long-term debt	0		0
Accrued compensation and retirement benefits	0		0
Accrued income taxes	10		10
Intercompany loans payable	19,206		17,278
Deferred tax liabilities	0		0
Other liabilities	0		0
Total liabilities	19,243		17,311
Shareholders’ equity	50,578		50,091
Noncontrolling interests	0		0
Total equity	50,578		50,091
Total liabilities and equity	69,821		67,402
Subsidiary Issuer | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	20		18
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	200		188
Intercompany receivable	9,352		9,407
Other current assets	183		190
Total current assets	9,755		9,803
Property, plant, and equipment, net	1,527		1,480
Goodwill	2,009		2,009
Other intangible assets, net	93		99
Tax assets	520		568
Investment in subsidiaries	73,122		71,129
Intercompany loans receivable	21		21
Other assets	350		216
Total assets	87,397		85,325
Current liabilities:
Current debt obligations	500		500
Accounts payable	494		481
Intercompany payable	21,687		11,971
Accrued compensation	728		913
Accrued income taxes	0		0
Other accrued expenses	337		331
Total current liabilities	23,746		14,196
Long-term debt	9,783		14,418
Accrued compensation and retirement benefits	1,001		1,069
Accrued income taxes	722		692
Intercompany loans payable	9,011		12,613
Deferred tax liabilities	0		0
Other liabilities	265		133
Total liabilities	44,528		43,121
Shareholders’ equity	42,869		42,204
Noncontrolling interests	0		0
Total equity	42,869		42,204
Total liabilities and equity	87,397		85,325
Subsidiary Issuer | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	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	58,863		39,557
Intercompany loans receivable	3,798		4,119
Other assets	0		0
Total assets	62,661		43,676
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	1,322		1,308
Accrued compensation	0		0
Accrued income taxes	0		0
Other accrued expenses	11		11
Total current liabilities	1,333		1,319
Long-term debt	1,309		1,354
Accrued compensation and retirement benefits	0		0
Accrued income taxes	0		0
Intercompany loans payable	27,126		9,320
Deferred tax liabilities	0		0
Other liabilities	0		0
Total liabilities	29,768		11,993
Shareholders’ equity	32,893		31,683
Noncontrolling interests	0		0
Total equity	32,893		31,683
Total liabilities and equity	62,661		43,676
Subsidiary Guarantors | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	204		1
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	0		0
Intercompany receivable	5		6
Other current assets	2		3
Total current assets	211		10
Property, plant, and equipment, net	0		0
Goodwill	0		0
Other intangible assets, net	0		0
Tax assets	0		0
Investment in subsidiaries	67,007		65,012
Intercompany loans receivable	30,240		27,858
Other assets	0		0
Total assets	97,458		92,880
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	10,697		7,200
Accrued compensation	0		0
Accrued income taxes	0		0
Other accrued expenses	70		53
Total current liabilities	10,767		7,253
Long-term debt	13,552		8,621
Accrued compensation and retirement benefits	0		0
Accrued income taxes	0		0
Intercompany loans payable	13,459		19,682
Deferred tax liabilities	0		0
Other liabilities	0		0
Total liabilities	37,778		35,556
Shareholders’ equity	59,680		57,324
Noncontrolling interests	0		0
Total equity	59,680		57,324
Total liabilities and equity	97,458		92,880
Subsidiary Guarantors | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	204		1
Investments	0		0
Accounts receivable, net	0		0
Inventories, net	0		0
Intercompany receivable	1,387		1,374
Other current assets	2		3
Total current assets	1,593		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	65,631		63,651
Intercompany loans receivable	30,240		27,858
Other assets	0		0
Total assets	97,464		92,887
Current liabilities:
Current debt obligations	0		0
Accounts payable	0		0
Intercompany payable	10,698		7,199
Accrued compensation	0		0
Accrued income taxes	0		0
Other accrued expenses	75		60
Total current liabilities	10,773		7,259
Long-term debt	13,552		8,621
Accrued compensation and retirement benefits	0		0
Accrued income taxes	0		0
Intercompany loans payable	13,458		19,682
Deferred tax liabilities	0		0
Other liabilities	1		1
Total liabilities	37,784		35,563
Shareholders’ equity	59,680		57,324
Noncontrolling interests	0		0
Total equity	59,680		57,324
Total liabilities and equity	97,464		92,887
Subsidiary Non-guarantors | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	3,738		4,374
Investments	6,436		5,455
Accounts receivable, net	6,118		6,222
Inventories, net	4,079		3,792
Intercompany receivable	32,385		19,170
Other current assets	1,903		1,941
Total current assets	54,659		40,954
Property, plant, and equipment, net	3,229		3,195
Goodwill	37,943		37,950
Other intangible assets, net	19,682		20,461
Tax assets	1,284		951
Investment in subsidiaries	0		0
Intercompany loans receivable	25,120		35,398
Other assets	1,763		798
Total assets	143,680		139,707
Current liabilities:
Current debt obligations	375		338
Accounts payable	1,471		1,472
Intercompany payable	9,467		9,452
Accrued compensation	1,039		1,273
Accrued income taxes	442		567
Other accrued expenses	2,687		2,521
Total current liabilities	15,481		15,623
Long-term debt	1,417		1,447
Accrued compensation and retirement benefits	572		582
Accrued income taxes	1,973		2,136
Intercompany loans payable	16,705		16,704
Deferred tax liabilities	1,376		1,278
Other liabilities	1,493		624
Total liabilities	39,017		38,394
Shareholders’ equity	104,522		101,192
Noncontrolling interests	141		121
Total equity	104,663		101,313
Total liabilities and equity	143,680		139,707
Subsidiary Non-guarantors | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	3,758		4,392
Investments	6,436		5,455
Accounts receivable, net	6,118		6,222
Inventories, net	4,042		3,753
Intercompany receivable	10,725		7,212
Other current assets	2,086		2,131
Total current assets	33,165		29,165
Property, plant, and equipment, net	4,756		4,675
Goodwill	39,952		39,959
Other intangible assets, net	19,775		20,560
Tax assets	1,804		1,519
Investment in subsidiaries	0		0
Intercompany loans receivable	40,585		29,002
Other assets	2,113		1,014
Total assets	142,150		125,894
Current liabilities:
Current debt obligations	875		838
Accounts payable	1,965		1,953
Intercompany payable	201		119
Accrued compensation	1,767		2,186
Accrued income taxes	442		567
Other accrued expenses	3,008		2,834
Total current liabilities	8,258		8,497
Long-term debt	9,891		14,511
Accrued compensation and retirement benefits	1,573		1,651
Accrued income taxes	2,695		2,828
Intercompany loans payable	17,833		17,699
Deferred tax liabilities	1,376		1,278
Other liabilities	1,757		756
Total liabilities	43,383		47,220
Shareholders’ equity	98,626		78,553
Noncontrolling interests	141		121
Total equity	98,767		78,674
Total liabilities and equity	$ 142,150		$ 125,894