v3.25.2
Revenues - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Disaggregation of Revenue [Line Items]    
Revenues $ 225.6 $ 237.2
Segment Reporting, Reconciling Item, Corporate Nonsegment    
Disaggregation of Revenue [Line Items]    
Revenues 3.1 2.7
Total Children's Book Publishing and Distribution | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 109.4 105.4
Total Children's Book Publishing and Distribution | Operating Segments | Book Clubs - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 1.8 2.7
Total Children's Book Publishing and Distribution | Operating Segments | Book Fairs - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 34.1 28.8
Total Children's Book Publishing and Distribution | Operating Segments | Trade - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 61.2 58.2
Total Children's Book Publishing and Distribution | Operating Segments | Trade - International    
Disaggregation of Revenue [Line Items]    
Revenues 12.3 15.7
Total Education Solutions | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 40.1 55.7
Total Entertainment | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 13.6 16.6
Total Entertainment | Operating Segments | Entertainment - U.S.    
Disaggregation of Revenue [Line Items]    
Revenues 1.4 1.6
Total Entertainment | Operating Segments | Entertainment - International    
Disaggregation of Revenue [Line Items]    
Revenues 12.2 15.0
Total International | Operating Segments    
Disaggregation of Revenue [Line Items]    
Revenues 59.4 56.8
Total International | Operating Segments | Major Markets    
Disaggregation of Revenue [Line Items]    
Revenues 48.9 48.1
Total International | Operating Segments | Other Markets    
Disaggregation of Revenue [Line Items]    
Revenues $ 10.5 $ 8.7