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Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.

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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.

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Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.

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Fair value of asset after deduction of liability.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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

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Amount of cash (inflow) outflow from investing activities classified as other.

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Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables.

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Acquisitions (Details) - USD ($) $ in Millions			3 Months Ended		9 Months Ended		12 Months Ended
Acquisitions (Details) - USD ($) $ in Millions	Jun. 01, 2023	Sep. 01, 2022	Feb. 29, 2024	Nov. 30, 2023	Feb. 29, 2024	Feb. 28, 2023	May 31, 2023
Business Acquisition [Line Items]
Other investment and acquisition-related payments					$ (8.5)	$ (10.7)
Additional paid-in capital			$ 603.0		603.0	630.6	$ 632.2
Amortizable intangible assets acquired			$ 0.2	$ 5.8	6.0	4.1	4.1
Additions					$ 0.0	$ 7.0	$ 7.6
Education
Business Acquisition [Line Items]
Additions		$ 7.6
Learning Ovations, Inc.
Business Acquisition [Line Items]
Other investment and acquisition-related payments		11.1
Amortizable intangible assets acquired		4.1
Receivables, Fair Value Disclosure		$ 0.1
Business combination, discount rate		0.175
Fair Value, Net Asset (Liability)		$ 3.6
Deferred Tax Liabilities, Tax Deferred Income		0.6
Learning Ovations, Inc. \| Education
Business Acquisition [Line Items]
Additions		$ 7.6
Make Believe Ideas Limited (MBI)
Business Acquisition [Line Items]
Other investment and acquisition-related payments	$ 2.1
Noncontrolling interest, equity, carrying amount	1.6
Additional paid-in capital	$ 0.5
Scholastic, Inc. \| Learning Ovations, Inc.
Business Acquisition [Line Items]
Ownership percentage		100.00%
Scholastic, Inc. \| Make Believe Ideas Limited (MBI)
Business Acquisition [Line Items]
Ownership percentage	100.00%						95.00%