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Derivatives and Currency Exchange Risk Management , Balance Sheet Presentation (Details) - USD ($) $ in Millions	Apr. 28, 2017	Apr. 29, 2016
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 262	$ 248
Derivative Liabilities	104	219
Currency exchange rate contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	216	145
Derivative Liabilities	93	166
Interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	41	89
Derivative Liabilities		48
Commodity derivatives
Derivatives, Fair Value [Line Items]
Derivative Liabilities		1
Cross currency interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	5	14
Derivative Liabilities	11	4
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Assets	241	221
Derivative Liabilities	57	191
Derivatives designated as hedging instruments | Currency exchange rate contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	152	123
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative Assets	48	9
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities	43	89
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	14	54
Derivatives designated as hedging instruments | Interest rate contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative Assets	41	89
Derivatives designated as hedging instruments | Interest rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	48
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Assets	21	27
Derivative Liabilities	47	28
Derivatives not designated as hedging instruments | Currency exchange rate contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	16	13
Derivatives not designated as hedging instruments | Currency exchange rate contracts | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities	36	23
Derivatives not designated as hedging instruments | Commodity derivatives | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets		0
Derivatives not designated as hedging instruments | Commodity derivatives | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities		1
Derivatives not designated as hedging instruments | Cross currency interest rate contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative Assets	5	14
Derivatives not designated as hedging instruments | Cross currency interest rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 11	$ 4

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313

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No definition available.

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