Taxes on Earnings Schedule of Components of Earnings Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 705	$ 803	$ 1,064
Income (Loss) from Continuing Operations before Income Taxes, Foreign	144	146	84
Earnings before taxes	$ 849	$ 949	$ 1,148

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

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- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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- References

No definition available.

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