Taxes on Earnings Schedule Of Reconciliation Of Effective Income Tax Rate (Details)	12 Months Ended
Jul. 31, 2016	Aug. 02, 2015	Aug. 03, 2014
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	2.70%	2.20%	2.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(3.00%)	(2.50%)	(1.00%)
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent	0.00%	(0.80%)	0.00%
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent	(3.20%)	(2.90%)	(2.20%)
Effective Income Tax Rate Reconciliation, Goodwill impairment, Percent	4.30%	0.00%	0.00%
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent	(0.80%)	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	(1.30%)	(1.20%)	(1.20%)
Effective Income Tax Rate Reconciliation, Percent	33.70%	29.80%	32.60%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Section S99
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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