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Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	12 Months Ended
	May 31, 2023 USD ($) segment	May 31, 2022 USD ($)	May 31, 2021 USD ($)	Jun. 01, 2023
Property, Plant and Equipment [Line Items]
Allowance for doubtful accounts receivable	$ 16.7	$ 25.9
Capitalized computer software, net	62.7	60.3
Capitalized computer software, amortization expense	$ 25.3	26.4	$ 27.6
Useful life of intangible assets	5 years 1 month 6 days
Royalty advances, net	$ 79.1	76.0
Reporting units subject to goodwill impairment | segment	6
Advertising expense	$ 76.9	69.5	$ 60.1
Capitalized costs	6.2	7.3
Long-lived assets	$ 458.7	$ 456.7
Number of International Locations Export Business	120
Scholastic, Inc. | Make Believe Ideas Limited (MBI)
Property, Plant and Equipment [Line Items]
Noncontrolling interest, ownership percentage by parent	95.00%			100.00%
Founder and CEO of MBI | Make Believe Ideas Limited (MBI)
Property, Plant and Equipment [Line Items]
Noncontrolling ownership percentage	5.00%
Make Believe Ideas Limited (MBI) | Founder and CEO of MBI
Property, Plant and Equipment [Line Items]
Noncontrolling ownership percentage	5.00%
Minimum
Property, Plant and Equipment [Line Items]
Initial term	3 years
Maximum
Property, Plant and Equipment [Line Items]
Initial term	10 years
Buildings
Property, Plant and Equipment [Line Items]
Depreciable life	40 years
Building Improvements
Property, Plant and Equipment [Line Items]
Depreciable life	25 years
Capitalized Software | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Capitalized Software | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	10 years
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Depreciable life	10 years
Customer Lists | Minimum
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	5 years
Customer Lists | Maximum
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	10 years
Prepublication Costs | Minimum
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	2 years
Prepublication Costs | Maximum
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	5 years
Intellectual Property
Property, Plant and Equipment [Line Items]
Useful life of intangible assets	5 years

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