Segments - Additional Information (Detail)			9 Months Ended	12 Months Ended
Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($)	Jan. 31, 2023 USD ($) segment business	Apr. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of business segments \| segment			8
Impairment of goodwill \| $	$ 0	$ 0	$ 0	$ 0
Number of line of business \| business			5

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration