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Revenue Recognition, Contracts with Customers - Shipping and Handling (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Revenue from Contract with Customer [Abstract]
Shipping and handling costs	$ 5,922	$ 6,536	$ 17,834	$ 19,668

X

- Definition

Shipping and Handling Expense

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration