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v3.22.2

Capital Stock and Changes in Capital Accounts (Details) | 12 Months Ended
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Apr. 30, 2022 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
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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
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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
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Namespace Prefix: | jwa_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
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Balance Type: | na
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |