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Acquisitions (Details) $ / shares in Units, € in Millions |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 01, 2020 USD ($) | Jan. 01, 2020 EUR (€) | Jul. 01, 2019 USD ($) | Nov. 01, 2018 USD ($) | Apr. 30, 2020 USD ($) Business shares | Jan. 31, 2020 USD ($) | Oct. 31, 2019 USD ($) Business | Jul. 31, 2019 USD ($) Business | Apr. 30, 2019 USD ($) | Jan. 31, 2019 USD ($) | Oct. 31, 2018 USD ($) $ / shares shares | Jul. 31, 2018 USD ($) | Apr. 30, 2020 USD ($) shares | Apr. 30, 2019 USD ($) | Apr. 30, 2018 USD ($)
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  | $ 229,629,000 | $ 190,415,000 | $ 0
Revenue |  |  |  |  | $ 474,700,000 | $ 467,100,000 | $ 466,200,000 | $ 423,500,000 | $ 491,200,000 | $ 449,400,000 | $ 448,600,000 | $ 410,900,000 | 1,831,483,000 | 1,800,069,000 | 1,796,103,000
Operating income (loss) |  |  |  |  | (170,700,000) | $ 48,500,000 | $ 63,400,000 | $ 4,500,000 | 80,100,000 | $ 50,300,000 | 57,500,000 | $ 36,100,000 | (54,287,000) | 223,989,000 | 231,461,000
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 1,116,790,000 |  |  |  | 1,095,666,000 |  |  |  | 1,116,790,000 | 1,095,666,000 |
Operating Lease Right-of-Use Assets |  |  |  |  | 142,716,000 |  |  |  | 0 |  |  |  | 142,716,000 | 0 |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease Liabilities |  |  |  |  | $ 181,592,000 |  |  |  |  |  |  |  | $ 181,592,000 |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock warrant holders are allowed to purchase (in shares) | shares |  |  |  |  | 400,000 |  |  |  |  |  |  |  | 400,000 |  |
Research Publishing and Platforms [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  | $ 948,839,000 | 939,217,000 | 936,857,000
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 448,130,000 |  |  |  | 438,511,000 |  |  |  | 448,130,000 | 438,511,000 |
Academic and Professional Learning [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  | 650,789,000 | 703,303,000 | 740,115,000
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 501,091,000 |  |  |  | 458,145,000 |  |  |  | 501,091,000 | 458,145,000 |
Education Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  | 231,855,000 | 157,549,000 | $ 119,131,000
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 167,569,000 |  |  |  | $ 199,010,000 |  |  |  | 167,569,000 | 199,010,000 |
Mthree [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of consideration transferred | $ 128,600,000 | € 97.5 |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of additional consideration to be paid after the acquisition date | 6,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash acquired | 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired | $ 126,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period over which cash payment will be made upon reaching certain revenue and Adjusted EBITDA targets | 4 years | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill deductible for tax purposes | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  | 1,300,000 |  |
Total cash consideration transferred | 122,242,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Assets | 8,750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Technology, Property and Equipment, net | 484,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, net | 56,836,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 82,561,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease Right-of-Use Assets | 3,710,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Assets | 152,341,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Liabilities | 14,380,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Income Tax Liabilities | 12,722,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease Liabilities | 2,692,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Long-Term Liabilities | 305,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Liabilities | 30,099,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired | $ 56,836,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mthree [Member] | Education Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  | 17,500 |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  |  |  |  | 1,700,000 |  |
Mthree [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired | $ 48,792,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life | 12 years | 12 years |  |  |  |  |  |  |  |  |  |  |  |  |
Mthree [Member] | Content [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired | $ 1,319,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life | 4 years | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Mthree [Member] | Trademarks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired | $ 6,725,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life | 10 years | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
zybooks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total cash consideration transferred |  |  | $ 55,939,000 |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Assets |  |  | 2,280,000 |  |  |  |  |  |  |  |  |  |  |  |
Technology, Property and Equipment, net |  |  | 28,000 |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, net |  |  | 24,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 36,903,000 |  |  |  |  |  |  |  |  |  |  |  |
Total Assets |  |  | 63,711,000 |  |  |  |  |  |  |  |  |  |  |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Liabilities |  |  | 2,581,000 |  |  |  |  |  |  |  |  |  |  |  |
Deferred Income Tax Liabilities |  |  | 5,191,000 |  |  |  |  |  |  |  |  |  |  |  |
Total Liabilities |  |  | 7,772,000 |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | 24,500,000 |  |  |  |  |  |  |  |  |  |  |  |
zybooks [Member] | Academic and Professional Learning [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of consideration transferred |  |  | 57,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Fair value of additional consideration to be paid after the acquisition date |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  | 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  | 54,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,500,000 |
Goodwill deductible for tax purposes |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
zybooks [Member] | Developed Technology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 10,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |  |
zybooks [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 6,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
zybooks [Member] | Content [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 4,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
zybooks [Member] | Trademarks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 2,900,000 |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Other Acquisitions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  | 48,500,000 |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 27,900,000 |  |  |  |  |  |  |  | 27,900,000 |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  |  |  |  |  |  |  |  |  |  |  | 27,700,000 |  |
Other Acquisitions [Member] | Research Publishing and Platforms [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 19,400,000 |  |  |  |  |  |  |  | 19,400,000 |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of immaterial businesses acquired | Business |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Other Acquisitions [Member] | Academic and Professional Learning [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 8,500,000 |  |  |  |  |  |  |  | $ 8,500,000 |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of immaterial businesses acquired | Business |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |
Other Acquisitions [Member] | Education Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of immaterial businesses acquired | Business |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Other Acquisitions [Member] | Developed Technology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |
Other Acquisitions [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  | 8 years |  |
Other Acquisitions [Member] | Content [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |
The Learning House, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of consideration transferred |  |  |  | $ 201,274,000 |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  | 10,300,000 |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  |  | 190,400,000 |  |  |  |  |  |  |  |  |  |  |
Total cash consideration transferred |  |  |  | 200,700,000 |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Assets |  |  |  |  |  |  |  |  |  |  | 20,353,000 |  |  |  |
Technology, Property and Equipment, net |  |  |  |  |  |  |  |  |  |  | 343,000 |  |  |  |
Intangible Assets, net |  |  |  |  |  |  |  |  |  |  | 109,548,000 |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  | 110,966,000 |  |  |  |
Other non-current assets |  |  |  |  |  |  |  |  |  |  | 5,025,000 |  |  |  |
Total Assets |  |  |  |  |  |  |  |  |  |  | 246,235,000 |  |  |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current Liabilities |  |  |  |  |  |  |  |  |  |  | 16,999,000 |  |  |  |
Deferred Income Tax Liabilities |  |  |  |  |  |  |  |  |  |  | 26,778,000 |  |  |  |
Other Long-Term Liabilities |  |  |  |  |  |  |  |  |  |  | 1,184,000 |  |  |  |
Total Liabilities |  |  |  |  |  |  |  |  |  |  | $ 44,961,000 |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  |  |  |  |  |  |  |  |  |  |  | $ 109,548,000 |  |
Percentage of ownership interest acquired |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |
The Learning House, Inc. [Member] | Education Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  | 31,500,000 |
Operating income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,000,000.0 |
The Learning House, Inc. [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  |  |  |  |  |  |  |  |  |  |  | $ 103,850,000 |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  | 15 years |  |
The Learning House, Inc. [Member] | Content [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,698,000 |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |
The Learning House, Inc. [Member] | Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of warrants |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Issuance of warrants |  |  |  | $ 600,000 |  |  |  |  |  |  |  |  |  |  |
The Learning House, Inc. [Member] | Common Stock Class A [Member] | Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock warrant holders are allowed to purchase (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 400,000 |  |  |  |
Exercise price per share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 90.00 |  |  |  |

X
- Definition Amount of additional consideration to be transferred subsequent to acquisition date. + References No definition available. + Details
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X
- Definition Period over which post acquisition compensation expense will be recognized upon reach certain revenue and Adjusted EBITDA targets in a business combination. + References No definition available. + Details
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X
- Definition Refers to the number of immaterial businesses acquired during the period. + References No definition available. + Details
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Namespace Prefix: | jwa_
Data Type: | xbrli:integerItemType
Balance Type: | na
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