v3.26.1
Goodwill and Other Intangibles - Schedule of goodwill by segment (Details) - USD ($)
$ in Millions
May 31, 2026
May 31, 2025
May 31, 2024
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill $ 199.4 $ 198.9 $ 132.8
Children's Book Publishing and Distribution      
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill 47.4 47.4  
Education      
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill 75.7 75.7  
International      
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill 10.1 10.1  
Entertainment      
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill $ 66.2 $ 65.7