Revenue Recognition, Contracts with Customers - Narrative (Details) $ in Thousands	12 Months Ended
	Apr. 30, 2026 USD ($) performanceObligation	Apr. 30, 2025 USD ($)	Apr. 30, 2024 USD ($)
Segment Reporting Information [Line Items]
Revenue, net	$ 1,676,528	$ 1,677,609	$ 1,872,987
Academic \| Revenue from Contract with Customers \| Product Concentration Risk
Segment Reporting Information [Line Items]
Revenue percentage	54.00%
Education Publishing \| Revenue from Contract with Customers \| Product Concentration Risk
Segment Reporting Information [Line Items]
Revenue percentage	48.00%
Digital Courseware \| Revenue from Contract with Customers \| Product Concentration Risk
Segment Reporting Information [Line Items]
Revenue percentage	35.00%
Research \| Research Publishing \| Journal Revenue
Segment Reporting Information [Line Items]
Duration of contract	1 year
Number of performance obligations \| performanceObligation	2
Research \| Research Publishing \| Revenue from Contract with Customers \| Product Concentration Risk \| Journal Subscriptions, Open Access and Comprehensive Agreements
Segment Reporting Information [Line Items]
Revenue percentage	88.00%
Research \| Education Publishing \| Atypon Platforms and Services \| Minimum
Segment Reporting Information [Line Items]
Duration of contract	2 years
Research \| Education Publishing \| Atypon Platforms and Services \| Maximum
Segment Reporting Information [Line Items]
Duration of contract	5 years
Learning \| Professional \| Revenue from Contract with Customers \| Product Concentration Risk \| Print and Digital \| Transferred at Point in Time
Segment Reporting Information [Line Items]
Revenue percentage	53.00%
Learning \| Professional \| Revenue from Contract with Customers \| Product Concentration Risk \| Assessments Offering \| Transferred over Time
Segment Reporting Information [Line Items]
Revenue percentage	32.00%
Operating Segments \| Research
Segment Reporting Information [Line Items]
Revenue, net	$ 1,129,942	1,075,459	1,042,705
Operating Segments \| Research \| Research Publishing
Segment Reporting Information [Line Items]
Revenue, net	965,767	922,553	892,784
Operating Segments \| Research \| Research Solutions
Segment Reporting Information [Line Items]
Revenue, net	164,175	152,906	149,921
Operating Segments \| Learning
Segment Reporting Information [Line Items]
Revenue, net	546,586	584,768	574,739
Operating Segments \| Learning \| Academic
Segment Reporting Information [Line Items]
Revenue, net	318,757	333,693	323,541
Operating Segments \| Learning \| Professional
Segment Reporting Information [Line Items]
Revenue, net	$ 227,829	$ 251,075	$ 251,198