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Acquisitions (Details) € in Millions |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
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Apr. 30, 2021 USD ($) | Jan. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Apr. 30, 2020 USD ($) | Jan. 01, 2020 USD ($) | Jan. 01, 2020 EUR (€) | Jul. 01, 2019 USD ($) | Apr. 30, 2021 USD ($) | Jan. 31, 2021 USD ($) | Oct. 31, 2020 USD ($) | Jul. 31, 2020 USD ($) | Apr. 30, 2020 USD ($) | Jan. 31, 2020 USD ($) | Oct. 31, 2019 USD ($) | Jul. 31, 2019 USD ($) | Apr. 30, 2021 USD ($) | Apr. 30, 2020 USD ($) | Apr. 30, 2019 USD ($)
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 299,942,000 | $ 229,629,000 |  | $ 190,415,000
Revenue |  |  |  |  |  |  |  |  | $ 536,300,000 | $ 482,900,000 | $ 491,000,000.0 | $ 431,300,000 | $ 474,700,000 |  | $ 467,100,000 | $ 466,200,000 | $ 423,500,000 | 1,941,501,000 | 1,831,483,000 |  | 1,800,069,000
Operating income (loss) |  |  |  |  |  |  |  |  | 51,200,000 | 34,400,000 | $ 69,900,000 | $ 30,000,000.0 | (170,700,000) |  | $ 48,500,000 | $ 63,400,000 | $ 4,500,000 | 185,511,000 | (54,287,000) |  | $ 223,989,000
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 1,304,340,000 |  |  | $ 1,116,790,000 |  |  |  |  | 1,304,340,000 |  |  |  | 1,116,790,000 |  |  |  |  | 1,304,340,000 | 1,116,790,000 |  |
Operating lease right-of-use assets | 121,430,000 |  |  | 142,716,000 |  |  |  |  | 121,430,000 |  |  |  | 142,716,000 |  |  |  |  | 121,430,000 | 142,716,000 |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease liabilities | 168,272,000 |  |  |  |  |  |  |  | 168,272,000 |  |  |  |  |  |  |  |  | 168,272,000 |  |  |
Research Publishing & Platforms [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 619,203,000 |  |  | 448,130,000 |  |  |  |  | 619,203,000 |  |  |  | 448,130,000 |  |  |  |  | 619,203,000 | 448,130,000 |  |
Academic and Professional Learning [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 512,512,000 |  |  | 501,091,000 |  |  |  |  | 512,512,000 |  |  |  | 501,091,000 |  |  |  |  | 512,512,000 | 501,091,000 |  |
Education Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 172,625,000 |  |  | 167,569,000 | [1] |  |  |  | 172,625,000 |  |  |  | 167,569,000 | [1] |  |  |  | 172,625,000 | 167,569,000 | [1] |
Hindawi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of consideration transferred | 300,086,000 | $ 300,086,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total cash consideration transferred |  |  | $ 299,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of preexisting relationship |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  | 1,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  | 298,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition costs | 2,400,000 |  |  |  |  |  |  |  | 2,400,000 |  |  |  |  |  |  |  |  | 2,400,000 |  |  |
Goodwill deductible for tax purposes | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  | 0 |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets | 2,812,000 | 2,902,000 |  |  |  |  |  |  | 2,812,000 | 2,902,000 |  |  |  |  |  |  |  | 2,812,000 |  |  |
Technology, property and equipment, net | 844,000 | 844,000 |  |  |  |  |  |  | 844,000 | 844,000 |  |  |  |  |  |  |  | 844,000 |  |  |
Intangible assets, net | 194,900,000 | 194,400,000 |  |  |  |  |  |  | 194,900,000 | 194,400,000 |  |  |  |  |  |  |  | 194,900,000 |  |  |
Goodwill | 147,388,000 | 141,775,000 |  |  |  |  |  |  | 147,388,000 | 141,775,000 |  |  |  |  |  |  |  | 147,388,000 |  |  |
Operating lease right-of-use assets | 3,762,000 | 3,716,000 |  |  |  |  |  |  | 3,762,000 | 3,716,000 |  |  |  |  |  |  |  | 3,762,000 |  |  |
Other non-current assets | 69,000 | 177,000 |  |  |  |  |  |  | 69,000 | 177,000 |  |  |  |  |  |  |  | 69,000 |  |  |
Total assets | 349,775,000 | 343,814,000 |  |  |  |  |  |  | 349,775,000 | 343,814,000 |  |  |  |  |  |  |  | 349,775,000 |  |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities | 3,594,000 | 3,657,000 |  |  |  |  |  |  | 3,594,000 | 3,657,000 |  |  |  |  |  |  |  | 3,594,000 |  |  |
Deferred income tax liabilities | 37,031,000 | 36,936,000 |  |  |  |  |  |  | 37,031,000 | 36,936,000 |  |  |  |  |  |  |  | 37,031,000 |  |  |
Operating lease liabilities | 3,150,000 | 3,135,000 |  |  |  |  |  |  | 3,150,000 | 3,135,000 |  |  |  |  |  |  |  | 3,150,000 |  |  |
Other long-term liabilities | 5,914,000 | 0 |  |  |  |  |  |  | 5,914,000 | 0 |  |  |  |  |  |  |  | 5,914,000 |  |  |
Total liabilities | 49,689,000 | 43,728,000 |  |  |  |  |  |  | 49,689,000 | 43,728,000 |  |  |  |  |  |  |  | 49,689,000 |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | 194,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hindawi [Member] | Measurement Period Adjustments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Measurement Period Adjustments [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total preliminary consideration transferred | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets | (90,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Technology, property and equipment, net | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets, net | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 5,613,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets | 46,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other non-current assets | (108,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets | 5,961,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities | (63,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred income tax liabilities | 95,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease liabilities | 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities | 5,914,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total liabilities | 5,961,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hindawi [Member] | Research Publishing & Platforms [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000.0 |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,100,000) |  |  |
Hindawi [Member] | Content and Publishing Rights [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 188,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 15 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hindawi [Member] | Developed Technology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hindawi [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hindawi [Member] | Trademarks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
mthree [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest acquired |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of consideration transferred |  | 123,531,000 |  | 122,242,000 |  | $ 129,900,000 | € 98.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total cash consideration transferred |  |  |  |  |  | 122,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of additional consideration to be paid after the acquisition date |  |  |  |  |  | 6,400,000 |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |
Cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,200,000 |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  |  |  |  | $ 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  | 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 |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets |  | 9,223,000 |  | 8,750,000 |  |  |  |  |  | 9,223,000 |  |  | 8,750,000 |  |  |  |  |  | 8,750,000 |  |
Technology, property and equipment, net |  | 484,000 |  | 484,000 |  |  |  |  |  | 484,000 |  |  | 484,000 |  |  |  |  |  | 484,000 |  |
Intangible assets, net |  | 56,836,000 |  | 56,836,000 |  |  |  |  |  | 56,836,000 |  |  | 56,836,000 |  |  |  |  |  | 56,836,000 |  |
Goodwill |  | 82,561,000 |  | 82,561,000 |  |  |  |  |  | 82,561,000 |  |  | 82,561,000 |  |  |  |  |  | 82,561,000 |  |
Operating lease right-of-use assets |  | 3,710,000 |  | 3,710,000 |  |  |  |  |  | 3,710,000 |  |  | 3,710,000 |  |  |  |  |  | 3,710,000 |  |
Total assets |  | 152,814,000 |  | 152,341,000 |  |  |  |  |  | 152,814,000 |  |  | 152,341,000 |  |  |  |  |  | 152,341,000 |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  | 13,564,000 |  | 14,380,000 |  |  |  |  |  | 13,564,000 |  |  | 14,380,000 |  |  |  |  |  | 14,380,000 |  |
Deferred income tax liabilities |  | 12,722,000 |  | 12,722,000 |  |  |  |  |  | 12,722,000 |  |  | 12,722,000 |  |  |  |  |  | 12,722,000 |  |
Operating lease liabilities |  | 2,692,000 |  | 2,692,000 |  |  |  |  |  | 2,692,000 |  |  | 2,692,000 |  |  |  |  |  | 2,692,000 |  |
Other long-term liabilities |  | 305,000 |  | 305,000 |  |  |  |  |  | 305,000 |  |  | 305,000 |  |  |  |  |  | 305,000 |  |
Total liabilities |  | 29,283,000 |  | $ 30,099,000 |  |  |  |  |  | 29,283,000 |  |  | $ 30,099,000 |  |  |  |  |  | 30,099,000 |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Identifiable intangible assets acquired |  |  |  |  |  | 56,836,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
mthree [Member] | Measurement Period Adjustments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of consideration transferred |  | 1,289,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets |  | 473,000 |  |  |  |  |  |  |  | 473,000 |  |  |  |  |  |  |  |  |  |  |
Technology, property and equipment, net |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Intangible assets, net |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Total assets |  | 473,000 |  |  |  |  |  |  |  | 473,000 |  |  |  |  |  |  |  |  |  |  |
Liabilities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  | (816,000) |  |  |  |  |  |  |  | (816,000) |  |  |  |  |  |  |  |  |  |  |
Deferred income tax liabilities |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Operating lease liabilities |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Other long-term liabilities |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |
Total liabilities |  | (816,000) |  |  |  |  |  |  |  | (816,000) |  |  |  |  |  |  |  |  |  |  |
mthree [Member] | Education Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisitions [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32,600 |  |  |
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 |  |  |  |  |  |  |  |  |  | 300,000 |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,300,000 |  |  |
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 consideration transferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 48,500,000 |  |
Fair value of cash consideration transferred, including those amounts paid after acquisition, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,500,000 |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets, net | 39,400,000 | $ 11,700,000 |  |  |  |  |  |  | 39,400,000 | $ 11,700,000 |  |  |  |  |  |  |  | 39,400,000 |  |  |
Goodwill | 17,300,000 |  |  |  |  |  |  |  | 17,300,000 |  |  |  |  |  |  |  |  | $ 17,300,000 |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |
Other Acquisitions [Member] | Research Publishing & Platforms [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | 8,800,000 |  |  |  |  |  |  |  | 8,800,000 |  |  |  |  |  |  |  |  | $ 8,800,000 |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 years |  |  |
Other Acquisitions [Member] | Academic and Professional Learning [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 8,500,000 |  |  |  |  |  |  |  | $ 8,500,000 |  |  |  |  |  |  |  |  | $ 8,500,000 |  |  |
Identifiable intangible assets acquired and weighted-average useful life [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average useful life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |
[1] | The Education Services goodwill balance as of April 30, 2020 includes a cumulative pretax noncash goodwill impairment of $110.0 million.

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