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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, 2025 USD ($) segment	May 31, 2024 USD ($)	May 31, 2023 USD ($)	Jun. 01, 2023
Property, Plant and Equipment [Line Items]
Allowance for doubtful accounts receivable	$ 11.0	$ 14.9
Capitalized computer software, net	51.8	54.6
Capitalized computer software, amortization expense	$ 23.0	25.1	$ 25.3
Useful life of intangible assets	8 years 4 months 24 days
Royalty advances, net	$ 86.9	83.2
Reporting units subject to goodwill impairment | segment	7
Advertising expense	$ 61.4	61.7	76.9
Capitalized costs	9.8	14.4
Long-lived assets	$ 464.5	$ 457.3	$ 458.7
Number of International Locations Export Business	130
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%
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

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