Amount of assets held-for-sale that are not part of a disposal group.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-SubTopic 10
-Section 45
-Paragraph 28
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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-Topic 230
-SubTopic 10
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-Paragraph 12
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Basis of Presentation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Feb. 28, 2022	Nov. 30, 2021	Feb. 28, 2021	Aug. 31, 2020	Feb. 28, 2022	Feb. 28, 2021
Long Lived Assets Held-for-sale [Line Items]
(Gain) loss on sale of assets	$ 0.0		$ 3.8		$ 6.2	$ 10.4
Make Believe Ideas Limited (MBI) \| Scholastic, Inc.
Long Lived Assets Held-for-sale [Line Items]
Ownership percentage	95.00%				95.00%
Make Believe Ideas Limited (MBI) \| Founder and CEO of MBI
Long Lived Assets Held-for-sale [Line Items]
Ownership percentage by founder and CEO of MBI	5.00%				5.00%
Lake Mary
Long Lived Assets Held-for-sale [Line Items]
Assets held-for-sale		$ 4.2
Land, Buildings and Improvements
Long Lived Assets Held-for-sale [Line Items]
Assets held-for-sale			1.3	$ 5.7		$ 1.3
Proceeds from sale		10.4	5.1	12.3
(Gain) loss on sale of assets		$ 6.2	$ 3.8	$ 6.6
Witney Facilities
Long Lived Assets Held-for-sale [Line Items]
Assets held-for-sale	$ 2.2				$ 2.2