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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

Amount of investment in equity security without readily determinable fair value.

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- Definition

Amount of cumulative impairment loss on investment in equity security without readily determinable fair value.

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of investment in equity method investee and investment in and advance to affiliate.

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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Investments (Details) - USD ($)	1 Months Ended	12 Months Ended
Investments (Details) - USD ($)	Apr. 30, 2019	May 31, 2020	May 31, 2019	May 31, 2018
Investments (Details) [Line Items]
Investments		$ 31,000,000.0	$ 29,400,000
Income (loss) from equity method investments		$ 3,200,000	5,900,000	$ 4,800,000
Children's Book Publishing and Distribution [Member]
Investments (Details) [Line Items]
Non-controlling interest held		26.20%
Financing and Production Company [Member]
Investments (Details) [Line Items]
Equity investment acquired	$ 6,000,000.0
Impairment of investments		$ 0
Other Investments [Member]
Investments (Details) [Line Items]
Investments		100,000	0
Financing and Production Company [Member] \| Financing and Production Company [Member]
Investments (Details) [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest	4.60%
International
Investments (Details) [Line Items]
Equity method investments		25,000,000.0	23,400,000
Children's Book Publishing and Distribution [Member] \| Other Cost Method Investments [Member]
Investments (Details) [Line Items]
Investments		$ 6,000,000.0	$ 6,000,000.0