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General (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Transition costs	$ 13,554,000	$ 0	$ 13,554,000	$ 0
CEO transition costs related to equity-classified stock-based awards	7,388,000	$ 0	7,388,000	$ 0
Former CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Transition costs	13,554,000		13,554,000
Severance costs	10,304,000		10,304,000
CEO transition costs related to equity-classified stock-based awards	$ 7,388,000		$ 7,388,000

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- Definition

Transition Costs

+ References

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Transition Costs Related To Equity-Classified Stock-Based Awards

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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