Discontinued Operations Narrative (Details) In Millions, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended	6 Months Ended
Oct. 29, 2013 USD ($)	Oct. 29, 2013 EUR (€)	Jan. 26, 2014 USD ($)	Jan. 27, 2013 USD ($)	Jan. 26, 2014 USD ($)	Jan. 27, 2013 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Proceeds from Divestiture of Businesses	$ 548	€ 400
Gain on sale of business			147	0	141	0
Gain on sale of business, net of tax			$ 90		$ 72
Gain on sale of business, per diluted share			$ 0.28		$ 0.23

Income (Loss) from Disposal of Discontinued Operations, Net of Tax, Per Diluted Share

No definition available.

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- Definition

Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

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- Definition

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

+ References

+ Details

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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