Product Development Assets - Schedule Of Amortization Expense For Product Development Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Amortization expense	$ 16,058	$ 16,610	$ 22,835

The charge against earnings in the period representing the amortization of product development assets, which consist of composition costs and royalty advances to authors.

No definition available.

Name:	jwa_AmortizationOfProductDevelopmentAssets
Namespace Prefix:	jwa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration