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Revenue Recognition, Contracts with Customers - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 31, 2025
Jan. 31, 2024
Jan. 31, 2025
Jan. 31, 2024
Disaggregation of Revenue [Line Items]        
Revenue, net $ 404,626 $ 460,705 $ 1,235,030 $ 1,404,526
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations        
Disaggregation of Revenue [Line Items]        
Revenue from disposal group $ 0   $ 17,400  
Research | Research Publishing | Journal Subscriptions, Open Access and Comprehensive Agreements | Product Concentration Risk | Revenue from Contract with Customers        
Disaggregation of Revenue [Line Items]        
Revenue percentage 82.00%   86.00%  
Research | Research Solutions | Print and Digital | Product Concentration Risk | Revenue from Contract with Customers        
Disaggregation of Revenue [Line Items]        
Revenue percentage 57.00%   54.00%  
Learning | Academic | Print and Digital | Transferred at Point in Time | Product Concentration Risk | Revenue from Contract with Customers        
Disaggregation of Revenue [Line Items]        
Revenue percentage 55.00%   56.00%  
Learning | Academic | Digital Courseware | Transferred over Time | Product Concentration Risk | Revenue from Contract with Customers        
Disaggregation of Revenue [Line Items]        
Revenue percentage 41.00%   32.00%  
Learning | Professional | Print and Digital | Transferred at Point in Time | Product Concentration Risk | Revenue from Contract with Customers        
Disaggregation of Revenue [Line Items]        
Revenue percentage 60.00%   56.00%  
Learning | Professional | Assessments Offering | Product Concentration Risk | Revenue from Contract with Customers        
Disaggregation of Revenue [Line Items]        
Revenue percentage 28.00%   29.00%  
Operating Segments | Research        
Disaggregation of Revenue [Line Items]        
Revenue, net $ 267,544 256,199 $ 794,738 771,673
Operating Segments | Research | Research Publishing        
Disaggregation of Revenue [Line Items]        
Revenue, net 225,874 216,586 679,492 659,329
Operating Segments | Research | Research Solutions        
Disaggregation of Revenue [Line Items]        
Revenue, net 41,670 39,613 115,246 112,344
Operating Segments | Learning        
Disaggregation of Revenue [Line Items]        
Revenue, net 137,082 146,334 422,910 404,594
Operating Segments | Learning | Academic        
Disaggregation of Revenue [Line Items]        
Revenue, net 78,795 87,216 233,547 224,633
Operating Segments | Learning | Professional        
Disaggregation of Revenue [Line Items]        
Revenue, net $ 58,287 $ 59,118 $ 189,363 $ 179,961