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Acquisition and Divestitures - Pre Tax Loss on Sale of Business and Certain Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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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)

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