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Investments (Details) £ in Millions		12 Months Ended
Investments (Details) £ in Millions	May 19, 2026 GBP (£)	May 31, 2026 USD ($)	May 31, 2025 USD ($)	May 31, 2024 USD ($)	May 19, 2026 USD ($)
Investments (Details) [Line Items]
Investments		$ 5,800,000	$ 40,000,000.0
Income from equity method investments		300,000	500,000	$ 500,000
Proceeds from dividends received		0	0	1,300,000
Gain (loss) on sale of investments		(17,200,000)	0	0
Carrying amount of investment		5,700,000
Proceeds from equity method investment, distribution, return of capital		300,000	0	0
Foreign currency translation adjustments
Investments (Details) [Line Items]
Reclassification from AOCI net of tax		3,500,000
Financing and Production Company
Investments (Details) [Line Items]
Proceeds from equity method investment, distribution, return of capital		300,000
UK Children's Book Publishing
Investments (Details) [Line Items]
Equity method investments		$ 300,000			$ 33,900,000
Sale of equity method investment, consideration received \| £	£ 20.2
Ownership percentage		12.00%
International
Investments (Details) [Line Items]
Equity method investments		$ 0	33,600,000
Income from equity method investments		$ 300,000	300,000	$ 500,000
International \| U.K. Book Publishing Business
Investments (Details) [Line Items]
Ownership percentage		12.00%			26.20%
Entertainment
Investments (Details) [Line Items]
Income from equity method investments		$ 100,000	200,000
Entertainment \| Animated Television Production Companies
Investments (Details) [Line Items]
Ownership percentage		50.00%
Entertainment \| Equity and Cost Method Investments
Investments (Details) [Line Items]
Investments		$ 5,800,000	$ 6,400,000
Entertainment \| Financing and Production Company \| Financing and Production Company
Investments (Details) [Line Items]
Percent ownership in financing and production company		4.60%