XML 125 R92.htm IDEA: XBRL DOCUMENT
v3.21.2

Capital Stock and Changes in Capital Accounts (Details) | 12 Months Ended
--- | ---
Apr. 30, 2021 Vote shares
Class A [Member] |
Common Stock [Abstract] |
Class A Common shares into which each share of Class B Common Stock is convertible (in shares) | shares | 1
Percentage of the Board of Directors elected by Class A common stockholders | 30.00%
Number of votes to which each share of common stock is entitled | 0.1
Class B [Member] |
Common Stock [Abstract] |
Number of votes to which each share of common stock is entitled | 1

X
- Definition The number of shares of Class A Common Stock into which each share of Class B Common Stock is convertible. + References No definition available. + Details
Name: | jwa_ClassCommonSharesIntoWhichEachShareOfClassBCommonStockIsConvertible
Namespace Prefix: | jwa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of votes to which each share of common stock is entitled, excluding election of Directors. + References No definition available. + Details
Name: | jwa_NumberOfVotesEntitlementPerShareOfClassCommonStock
Namespace Prefix: | jwa_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights. + References No definition available. + Details
Name: | jwa_PercentageOfBoardOfDirectorsElectedByClassCommonStockholders
Namespace Prefix: | jwa_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |