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Goodwill and Intangible Assets - Impairment Analysis (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 25, 2015 | Jul. 29, 2017 | Jul. 30, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Discount Rate | 11.50% | 11.00% | 11.50%
Minimum |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Terminal Growth Rate | 1.50% | 2.00% | 2.00%
Maximum |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Terminal Growth Rate | 2.50% | 3.00% | 3.00%

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Percentage of assumed long-term growth in revenues, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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