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Restructuring Charges - Narrative (Details) - Cost Synergies Initiative - USD ($) $ in Millions | 3 Months Ended
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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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- Definition 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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