Acquisition and Divestitures - Pre Tax Loss on Sale of Business and Certain Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss on sale of businesses, assets, and impairment charges related to assets held-for-sale	$ (4,828)	$ (23,340)	$ (183,389)
CrossKnowledge
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss on sale of businesses, assets, and impairment charges related to assets held-for-sale	(2,309)	4,119	(55,440)
University Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss on sale of businesses, assets, and impairment charges related to assets held-for-sale	(934)	(12,578)	(107,048)
Wiley Edge
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss on sale of businesses, assets, and impairment charges related to assets held-for-sale	(422)	(14,852)	(19,401)
Other disposition activity
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss on sale of businesses, assets, and impairment charges related to assets held-for-sale	$ (1,163)	$ (29)	$ (1,500)