Acquisitions (Details) - USD ($) $ in Millions			12 Months Ended
	Jun. 01, 2023	Sep. 01, 2022	May 31, 2024	May 31, 2023	May 31, 2022
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired			$ 8.5	$ 10.7	$ 0.0
Goodwill			$ 132.8	$ 132.7	$ 125.3
Make Believe Ideas Limited (MBI)
Business Acquisition [Line Items]
Consideration transferred	$ 2.1
Noncontrolling interest, carrying amount	1.6
Adjustments to additional paid in capital	$ 0.5
Make Believe Ideas Limited (MBI) | Scholastic, Inc.
Business Acquisition [Line Items]
Noncontrolling interest, ownership percentage by parent	100.00%			95.00%
Learning Ovations, Inc.
Business Acquisition [Line Items]
Payments to acquire businesses, net of cash acquired		$ (11.1)
Receivables acquired		$ 0.1
Business combination, discount rate		0.175
Net assets acquired		$ 3.6
Amortizable intangible assets acquired		4.1
Deferred tax liabilities acquired		0.6
Learning Ovations, Inc. | Education Solutions
Business Acquisition [Line Items]
Goodwill		$ 7.6
Learning Ovations, Inc. | Scholastic, Inc.
Business Acquisition [Line Items]
Percentage of interests acquired		100.00%