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Segment Information, Total Assets by Segment (Details) - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Segment Information [Abstract]
Assets	$ 3,361,695	$ 3,446,439	$ 3,168,794
Operating Segments [Member] | Research Publishing & Platforms [Member]
Segment Information [Abstract]
Assets	1,593,297	1,692,366	1,225,313
Operating Segments [Member] | Academic & Professional Learning [Member]
Segment Information [Abstract]
Assets	894,516	946,760	924,924
Operating Segments [Member] | Education Services [Member]
Segment Information [Abstract]
Assets	542,508	472,814	486,316
Corporate [Member]
Segment Information [Abstract]
Assets	$ 331,374	$ 334,499	$ 532,241

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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