Property and Equipment - Additional information (Details) - USD ($) $ in Millions	12 Months Ended
Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Property, Plant and Equipment [Abstract]
Capitalized software costs	$ 50	$ 72	$ 72
Capitalized labor costs	$ 0	$ 13	$ 30

Additions made to capitalized computer software costs during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-1

Name:	us-gaap_CapitalizedComputerSoftwareAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration