Acquisitions and Acquisition-Related Items - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	6 Months Ended
	Oct. 30, 2015	Oct. 02, 2015	Aug. 31, 2015	Aug. 11, 2015	Apr. 24, 2015	Jan. 26, 2015
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill	$ 41,274				$ 40,530
Covidien plc [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable						$ 1,349
Inventories						2,221
Other current assets						3,134
Property, plant, and equipment						2,333
Goodwill						29,608
Intangible assets						26,194
Other assets						771
Total assets acquired						65,610
Short-term borrowings						1,011
Other current liabilities						2,418
Long-term debt						4,623
Long-term deferred tax liabilities						4,809
Other long-term liabilities						2,761
Total liabilities assumed						15,622
Net assets acquired						49,988
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Accounts receivable	0
Inventories	(1)
Other current assets	185
Property, plant, and equipment	(21)
Goodwill	22
Intangible assets	(71)
Other assets	24
Total assets acquired	138
Short-term borrowings	0
Other current liabilities	87
Long-term debt	0
Long-term deferred tax liabilities	73
Other long-term liabilities	(22)
Total liabilities assumed	138
Net assets acquired	0
Covidien plc [Member] | Scenario, Previously Reported [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable						1,349
Inventories						2,222
Other current assets						2,949
Property, plant, and equipment						2,354
Goodwill						29,586
Intangible assets						26,265
Other assets						747
Total assets acquired						65,472
Short-term borrowings						1,011
Other current liabilities						2,331
Long-term debt						4,623
Long-term deferred tax liabilities						4,736
Other long-term liabilities						2,783
Total liabilities assumed						15,484
Net assets acquired						$ 49,988
Acquisitions 2016 [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets	147
Property, plant, and equipment	7
IPR&D	422
Other intangible assets	235
Goodwill	729
Other assets	8
Total assets acquired	1,548
Current liabilities	88
Long-term deferred tax liabilities	134
Other long-term liabilities	2
Total liabilities assumed	224
Net assets acquired	1,324
Twelve, Inc. [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets		$ 60
Property, plant, and equipment		0
IPR&D		192
Other intangible assets		0
Goodwill		301
Other assets		0
Total assets acquired		553
Current liabilities		37
Long-term deferred tax liabilities		44
Other long-term liabilities		0
Total liabilities assumed		81
Net assets acquired		$ 472
RF Surgical Systems, Inc. [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets				$ 43
Property, plant, and equipment				3
IPR&D				0
Other intangible assets				115
Goodwill				132
Other assets				2
Total assets acquired				295
Current liabilities				28
Long-term deferred tax liabilities				27
Other long-term liabilities				0
Total liabilities assumed				55
Net assets acquired				$ 240
Medina Medical [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets			$ 11
Property, plant, and equipment			0
IPR&D			122
Other intangible assets			0
Goodwill			126
Other assets			0
Total assets acquired			259
Current liabilities			6
Long-term deferred tax liabilities			34
Other long-term liabilities			0
Total liabilities assumed			40
Net assets acquired			$ 219
All Other 2016 [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets	33
Property, plant, and equipment	4
IPR&D	108
Other intangible assets	120
Goodwill	170
Other assets	6
Total assets acquired	441
Current liabilities	17
Long-term deferred tax liabilities	29
Other long-term liabilities	2
Total liabilities assumed	48
Net assets acquired	$ 393
Acquisitions 2015 [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets					70
Property, plant, and equipment					18
IPR&D					71
Other intangible assets					316
Goodwill					473
Other assets					55
Total assets acquired					1,003
Current liabilities					44
Long-term deferred tax liabilities					117
Other long-term liabilities					4
Total liabilities assumed					165
Net assets acquired					838
NGC Medical S.p.A. [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets					55
Property, plant, and equipment					15
IPR&D					0
Other intangible assets					159
Goodwill					197
Other assets					3
Total assets acquired					429
Current liabilities					34
Long-term deferred tax liabilities					51
Other long-term liabilities					4
Total liabilities assumed					89
Net assets acquired					340
Sapiens Steering Brain Stimulation [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets					3
Property, plant, and equipment					1
IPR&D					30
Other intangible assets					0
Goodwill					170
Other assets					3
Total assets acquired					207
Current liabilities					4
Long-term deferred tax liabilities					0
Other long-term liabilities					0
Total liabilities assumed					4
Net assets acquired					203
All Other 2015 [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other current assets					12
Property, plant, and equipment					2
IPR&D					41
Other intangible assets					157
Goodwill					106
Other assets					49
Total assets acquired					367
Current liabilities					6
Long-term deferred tax liabilities					66
Other long-term liabilities					0
Total liabilities assumed					72
Net assets acquired					$ 295