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Summary of Significant Accounting Policies, Recently Issued and Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2026 | Apr. 30, 2025
Accounting Policies [Abstract] |  |
Increase in Inventories, net | $ 3,085 | $ 4,042
Decrease in Accrued royalties | (1,661) | (2,067)
Increase in Contract liabilities | 11,825 | 15,093
Print book sales return reserve net liability balance | $ (7,079) | $ (8,984)

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- Definition Amount of increase (decrease) in obligation related to royalties for which consideration has been received or is receivable. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in obligation related to contract liability for which consideration has been received or is receivable. + References No definition available. + Details
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Namespace Prefix: | jwa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) in right to consideration in exchange for inventory transferred to customer when right is conditioned on something other than passage of time. + References No definition available. + Details
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Namespace Prefix: | jwa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (decrease) in net assets resulting from sales return reserves recorded. + References No definition available. + Details
Name: | jwa_IncreaseDecreaseInNetAssetsResultingFromSalesReturnReservesRecorded
Namespace Prefix: | jwa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration