Guarantor Financial Information - Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions	Jan. 24, 2020	Oct. 25, 2019	Jul. 26, 2019	Apr. 26, 2019	Jan. 25, 2019	Oct. 26, 2018	Jul. 27, 2018	Apr. 27, 2018
Current assets:
Cash and cash equivalents	$ 3,709			$ 4,393
Investments	7,919			5,455
Accounts receivable, net	6,248			6,222
Inventories, net	4,122			3,753
Intercompany receivable	0			0
Other current assets	2,045			2,144
Total current assets	24,043			21,967
Property, plant, and equipment, net	4,764			4,675
Goodwill	40,091			39,959
Other intangible assets, net	19,456			20,560
Tax assets	2,272			1,519
Investment in subsidiaries	0			0
Intercompany loans receivable	0			0
Other assets	2,196			1,014
Total assets	92,822			89,694
Current liabilities:
Current debt obligations	844			838
Accounts payable	1,945			1,953
Intercompany payable	0			0
Accrued compensation	1,909			2,189
Accrued income taxes	457			567
Other accrued expenses	3,580			2,925
Total current liabilities	8,735			8,472
Long-term debt	24,732			24,486
Accrued compensation and retirement benefits	1,598			1,651
Accrued income taxes	2,738			2,838
Intercompany loans payable	0			0
Deferred tax liabilities	1,282			1,278
Other liabilities	1,784			757
Total liabilities	40,869			39,482
Shareholders’ equity	51,808			50,091
Noncontrolling interests	145			121
Total equity	51,953	$ 50,719	$ 50,497	50,212	$ 49,941	$ 49,714	$ 50,329	$ 50,822
Total liabilities and equity	92,822			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	(248)			(227)
Intercompany receivable	(43,836)			(28,623)
Other current assets	0			0
Total current assets	(44,084)			(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	(211,750)			(200,487)
Intercompany loans receivable	(39,390)			(66,277)
Other assets	0			0
Total assets	(295,224)			(295,614)
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	(43,836)			(28,623)
Accrued compensation	0			0
Accrued income taxes	0			0
Other accrued expenses	0			0
Total current liabilities	(43,836)			(28,623)
Long-term debt	0			0
Accrued compensation and retirement benefits	0			0
Accrued income taxes	0			0
Intercompany loans payable	(39,390)			(66,277)
Deferred tax liabilities	0			0
Other liabilities	0			0
Total liabilities	(83,226)			(94,900)
Shareholders’ equity	(211,998)			(200,714)
Noncontrolling interests	0			0
Total equity	(211,998)			(200,714)
Total liabilities and equity	(295,224)			(295,614)
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	(14,998)			(8,626)
Other current assets	0			0
Total current assets	(14,998)			(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	(204,384)			(167,566)
Intercompany loans receivable	(58,859)			(63,979)
Other assets	0			0
Total assets	(278,241)			(240,171)
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	(14,998)			(8,626)
Accrued compensation	0			0
Accrued income taxes	0			0
Other accrued expenses	0			0
Total current liabilities	(14,998)			(8,626)
Long-term debt	0			0
Accrued compensation and retirement benefits	0			0
Accrued income taxes	0			0
Intercompany loans payable	(58,859)			(63,979)
Deferred tax liabilities	0			0
Other liabilities	0			0
Total liabilities	(73,857)			(72,605)
Shareholders’ equity	(204,384)			(167,566)
Noncontrolling interests	0			0
Total equity	(204,384)			(167,566)
Total liabilities and equity	(278,241)			(240,171)
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	42			40
Other current assets	10			10
Total current assets	52			50
Property, plant, and equipment, net	0			0
Goodwill	0			0
Other intangible assets, net	0			0
Tax assets	0			0
Investment in subsidiaries	58,753			64,352
Intercompany loans receivable	0			3,000
Other assets	0			0
Total assets	58,805			67,402
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	0			0
Accrued compensation	20			3
Accrued income taxes	0			0
Other accrued expenses	25			20
Total current liabilities	45			23
Long-term debt	0			0
Accrued compensation and retirement benefits	0			0
Accrued income taxes	10			10
Intercompany loans payable	6,942			17,278
Deferred tax liabilities	0			0
Other liabilities	0			0
Total liabilities	6,997			17,311
Shareholders’ equity	51,808			50,091
Noncontrolling interests	0			0
Total equity	51,808			50,091
Total liabilities and equity	58,805			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	42			40
Other current assets	10			10
Total current assets	52			50
Property, plant, and equipment, net	0			0
Goodwill	0			0
Other intangible assets, net	0			0
Tax assets	0			0
Investment in subsidiaries	58,753			64,352
Intercompany loans receivable	0			3,000
Other assets	0			0
Total assets	58,805			67,402
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	0			0
Accrued compensation	20			3
Accrued income taxes	0			0
Other accrued expenses	25			20
Total current liabilities	45			23
Long-term debt	0			0
Accrued compensation and retirement benefits	0			0
Accrued income taxes	10			10
Intercompany loans payable	6,942			17,278
Deferred tax liabilities	0			0
Other liabilities	0			0
Total liabilities	6,997			17,311
Shareholders’ equity	51,808			50,091
Noncontrolling interests	0			0
Total equity	51,808			50,091
Total liabilities and equity	58,805			67,402
Subsidiary Issuer | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	0			18
Investments	0			0
Accounts receivable, net	0			0
Inventories, net	211			188
Intercompany receivable	8,807			9,407
Other current assets	195			190
Total current assets	9,213			9,803
Property, plant, and equipment, net	1,536			1,480
Goodwill	2,009			2,009
Other intangible assets, net	197			99
Tax assets	508			568
Investment in subsidiaries	75,008			71,123
Intercompany loans receivable	22			21
Other assets	377			216
Total assets	88,870			85,319
Current liabilities:
Current debt obligations	500			500
Accounts payable	507			481
Intercompany payable	21,383			11,971
Accrued compensation	785			913
Accrued income taxes	0			0
Other accrued expenses	287			331
Total current liabilities	23,462			14,196
Long-term debt	9,786			14,418
Accrued compensation and retirement benefits	1,025			1,069
Accrued income taxes	760			692
Intercompany loans payable	9,012			12,613
Deferred tax liabilities	0			0
Other liabilities	262			133
Total liabilities	44,307			43,121
Shareholders’ equity	44,563			42,198
Noncontrolling interests	0			0
Total equity	44,563			42,198
Total liabilities and equity	88,870			85,319
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	68,723			39,563
Intercompany loans receivable	3,545			4,119
Other assets	0			0
Total assets	72,268			43,682
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	1,327			1,308
Accrued compensation	0			0
Accrued income taxes	0			0
Other accrued expenses	8			11
Total current liabilities	1,335			1,319
Long-term debt	1,307			1,354
Accrued compensation and retirement benefits	0			0
Accrued income taxes	0			0
Intercompany loans payable	27,048			9,320
Deferred tax liabilities	0			0
Other liabilities	0			0
Total liabilities	29,690			11,993
Shareholders’ equity	42,578			31,689
Noncontrolling interests	0			0
Total equity	42,578			31,689
Total liabilities and equity	72,268			43,682
Subsidiary Guarantors | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	185			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	192			10
Property, plant, and equipment, net	0			0
Goodwill	0			0
Other intangible assets, net	0			0
Tax assets	0			0
Investment in subsidiaries	77,989			65,012
Intercompany loans receivable	18,296			27,858
Other assets	0			0
Total assets	96,477			92,880
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	13,599			7,200
Accrued compensation	0			0
Accrued income taxes	0			0
Other accrued expenses	98			53
Total current liabilities	13,697			7,253
Long-term debt	13,522			8,621
Accrued compensation and retirement benefits	0			0
Accrued income taxes	0			0
Intercompany loans payable	9,729			19,682
Deferred tax liabilities	0			0
Other liabilities	0			0
Total liabilities	36,948			35,556
Shareholders’ equity	59,529			57,324
Noncontrolling interests	0			0
Total equity	59,529			57,324
Total liabilities and equity	96,477			92,880
Subsidiary Guarantors | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	185			1
Investments	0			0
Accounts receivable, net	0			0
Inventories, net	0			0
Intercompany receivable	1,333			1,374
Other current assets	3			3
Total current assets	1,521			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	76,908			63,651
Intercompany loans receivable	18,296			27,858
Other assets	0			0
Total assets	96,725			92,887
Current liabilities:
Current debt obligations	0			0
Accounts payable	0			0
Intercompany payable	13,599			7,199
Accrued compensation	0			0
Accrued income taxes	0			0
Other accrued expenses	104			60
Total current liabilities	13,703			7,259
Long-term debt	13,522			8,621
Accrued compensation and retirement benefits	0			0
Accrued income taxes	0			0
Intercompany loans payable	9,970			19,682
Deferred tax liabilities	0			0
Other liabilities	1			1
Total liabilities	37,196			35,563
Shareholders’ equity	59,529			57,324
Noncontrolling interests	0			0
Total equity	59,529			57,324
Total liabilities and equity	96,725			92,887
Subsidiary Non-guarantors | Reportable Legal Entities | Medtronic Senior Notes and Medtronic Luxco Senior Notes
Current assets:
Cash and cash equivalents	3,524			4,374
Investments	7,919			5,455
Accounts receivable, net	6,248			6,222
Inventories, net	4,159			3,792
Intercompany receivable	34,982			19,170
Other current assets	1,838			1,941
Total current assets	58,670			40,954
Property, plant, and equipment, net	3,228			3,195
Goodwill	38,082			37,950
Other intangible assets, net	19,259			20,461
Tax assets	1,764			951
Investment in subsidiaries	0			0
Intercompany loans receivable	21,072			35,398
Other assets	1,819			798
Total assets	143,894			139,707
Current liabilities:
Current debt obligations	344			338
Accounts payable	1,438			1,472
Intercompany payable	8,854			9,452
Accrued compensation	1,104			1,273
Accrued income taxes	457			567
Other accrued expenses	3,170			2,521
Total current liabilities	15,367			15,623
Long-term debt	1,424			1,447
Accrued compensation and retirement benefits	573			582
Accrued income taxes	1,968			2,136
Intercompany loans payable	13,707			16,704
Deferred tax liabilities	1,282			1,278
Other liabilities	1,522			624
Total liabilities	35,843			38,394
Shareholders’ equity	107,906			101,192
Noncontrolling interests	145			121
Total equity	108,051			101,313
Total liabilities and equity	143,894			139,707
Subsidiary Non-guarantors | Reportable Legal Entities | CIFSA Senior Notes
Current assets:
Cash and cash equivalents	3,524			4,392
Investments	7,919			5,455
Accounts receivable, net	6,248			6,222
Inventories, net	4,122			3,753
Intercompany receivable	13,623			7,212
Other current assets	2,032			2,131
Total current assets	37,468			29,165
Property, plant, and equipment, net	4,764			4,675
Goodwill	40,091			39,959
Other intangible assets, net	19,456			20,560
Tax assets	2,272			1,519
Investment in subsidiaries	0			0
Intercompany loans receivable	37,018			29,002
Other assets	2,196			1,014
Total assets	143,265			125,894
Current liabilities:
Current debt obligations	844			838
Accounts payable	1,945			1,953
Intercompany payable	72			119
Accrued compensation	1,889			2,186
Accrued income taxes	457			567
Other accrued expenses	3,443			2,834
Total current liabilities	8,650			8,497
Long-term debt	9,903			14,511
Accrued compensation and retirement benefits	1,598			1,651
Accrued income taxes	2,728			2,828
Intercompany loans payable	14,899			17,699
Deferred tax liabilities	1,282			1,278
Other liabilities	1,783			756
Total liabilities	40,843			47,220
Shareholders’ equity	102,277			78,553
Noncontrolling interests	145			121
Total equity	102,422			78,674
Total liabilities and equity	$ 143,265			$ 125,894