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Revenue from Contracts with Customers (Tables) | 6 Months Ended
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Jan. 31, 2021
Revenue from Contract with Customer [Abstract] |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] | Of the contract liability balance outstanding at January 31, 2021, the Company expects to recognize 22% by the end of fiscal 2021, an additional 35% by the end of fiscal 2022, and the remaining balance thereafter.

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- Definition Tabular disclosure of expected timing for satisfying remaining performance obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045 + Details
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