v3.26.3
Revenues - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Disaggregation of Revenue [Line Items]    
Revenues $ 216.8 $ 225.6
Overhead    
Disaggregation of Revenue [Line Items]    
Revenues 0.0 3.1
Total Children's Book Publishing and Distribution | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 105.8 109.4
Total Children's Book Publishing and Distribution | Operating Segments | Book Clubs - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 2.1 1.8
Total Children's Book Publishing and Distribution | Operating Segments | Book Fairs - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 33.2 34.1
Total Children's Book Publishing and Distribution | Operating Segments | Trade - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 63.9 61.2
Total Children's Book Publishing and Distribution | Operating Segments | Trade - International    
Disaggregation of Revenue [Line Items]    
Revenues 6.6 12.3
Total Education | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 30.4 40.1
Total Entertainment | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 20.1 13.6
Total Entertainment | Operating Segments | Entertainment - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 2.3 1.4
Total Entertainment | Operating Segments | Entertainment - International    
Disaggregation of Revenue [Line Items]    
Revenues 17.8 12.2
Total International | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 60.5 59.4
Total International | Operating Segments | Major Markets    
Disaggregation of Revenue [Line Items]    
Revenues 49.5 48.9
Total International | Operating Segments | Other Markets    
Disaggregation of Revenue [Line Items]    
Revenues $ 11.0 $ 10.5