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Segment Information, Other Significant Reconciling Items by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Segment Information [Abstract]
Expenditures for long lived assets	$ (115,858)	$ (103,361)	$ (115,201)
Operating Segments [Member] | Research Publishing & Platforms [Member]
Segment Information [Abstract]
Expenditures for long lived assets	(30,139)	(24,284)	(16,329)
Operating Segments [Member] | Academic & Professional Learning [Member]
Segment Information [Abstract]
Expenditures for long lived assets	(44,082)	(41,897)	(38,229)
Operating Segments [Member] | Education Services [Member]
Segment Information [Abstract]
Expenditures for long lived assets	(7,308)	(3,449)	(613)
Corporate [Member]
Segment Information [Abstract]
Expenditures for long lived assets	$ (34,329)	$ (33,731)	$ (60,030)

X

- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 30
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123362884&loc=d3e9212-128498

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 30
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123362884&loc=d3e9215-128498

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123385561&loc=d3e9135-128495

+ Details

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X

- References

No definition available.

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- Details

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X

- Details

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