XML 80 R67.htm IDEA: XBRL DOCUMENT
v3.21.2

Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Oct. 31, 2021 | Jul. 31, 2021 | Oct. 31, 2020 | Jul. 31, 2020 | Oct. 31, 2021 | Oct. 31, 2020 | Apr. 30, 2021
Effective income tax rate [Abstract] |  |  |  |  |  |  |
Effective tax rate as reported | 20.70% |  | 0.10% |  | 39.10% | 13.70% |
Refund in connection with NOL carryback |  |  |  |  |  |  | $ 20.7
U.K. [Member] |  |  |  |  |  |  |
Effective income tax rate [Abstract] |  |  |  |  |  |  |
Non-cash deferred tax expense from re-measurement of net deferred tax liabilities |  | $ 20.7 |  | $ 6.7 |  |  |
Minimum [Member] | U.K. [Member] |  |  |  |  |  |  |
Effective income tax rate [Abstract] |  |  |  |  |  |  |
Foreign statutory tax rate |  | 19.00% |  | 17.00% |  |  |
Maximum [Member] | U.K. [Member] |  |  |  |  |  |  |
Effective income tax rate [Abstract] |  |  |  |  |  |  |
Foreign statutory tax rate |  | 25.00% |  | 19.00% |  |  |

X
- Definition Percentage of foreign statutory tax rate applicable to pretax income (loss). + References No definition available. + Details
Name: | jwa_ForeignStatutoryTaxRate
Namespace Prefix: | jwa_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of refund in connection with net operating losses carryback. + References No definition available. + Details
Name: | jwa_NetOperatingLossesCarrybackRefund
Namespace Prefix: | jwa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
Name: | us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityNameAxis=us-gaap_HerMajestysRevenueAndCustomsHMRCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |