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Restructuring Charges - Narrative (Details) - Cost Synergies Initiative - USD ($) $ in Millions	3 Months Ended
	Jul. 28, 2017	Jul. 29, 2016
Restructuring Cost and Reserve [Line Items]
Charges	$ 19	$ 111
Accrual (reversal of accrual) for restructuring reserves	(5)	(7)
Cost of products sold
Restructuring Cost and Reserve [Line Items]
Charges	5	$ 10
Selling, general, and administrative expense
Restructuring Cost and Reserve [Line Items]
Charges	1
Covidien plc
Restructuring Cost and Reserve [Line Items]
Expected cost synergies	$ 850

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Business Combination, Expected Cost Synergies

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
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-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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