For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	dtr-types:percentItemType
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Period Type:	duration

Segments - Additional Information (Detail)	12 Months Ended
Segments - Additional Information (Detail)	Apr. 30, 2024 business segment	Apr. 30, 2023	Apr. 30, 2022
Segment Reporting Information [Line Items]
Number of business segments \| segment	8
Number of lines of business \| business	5
U.S. \| Revenue Benchmark \| Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
U.S. \| Long-Lived Assets \| Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
United Kingdom \| Long-Lived Assets \| Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage			10.00%