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Segment Information - Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jul. 31, 2022
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2022
Segment Reporting Information [Line Items]        
Revenue, net   $ 1,872,987 $ 2,019,900 $ 2,082,928
Adjusted Operating Income:   (187,047) 33,100 209,661
Depreciation and amortization   176,989 213,253 215,170
Accelerated amortization of intangible assets $ 4,600      
Operating Segments        
Segment Reporting Information [Line Items]        
Revenue, net   1,872,987 2,019,900 2,082,928
Adjusted Operating Income:   409,207 385,270 410,433
Depreciation and amortization   154,555 196,791 198,617
Operating Segments | Research        
Segment Reporting Information [Line Items]        
Revenue, net   1,042,705 1,080,311 1,111,343
Adjusted Operating Income:   237,763 283,984 295,227
Depreciation and amortization   93,422 93,008 94,899
Operating Segments | Learning        
Segment Reporting Information [Line Items]        
Revenue, net   574,739 546,395 581,208
Adjusted Operating Income:   142,733 100,100 111,112
Depreciation and amortization   57,696 57,698 58,691
Operating Segments | Held for Sale or Sold        
Segment Reporting Information [Line Items]        
Revenue, net   255,543 393,194 390,377
Adjusted Operating Income:   28,711 1,186 4,094
Depreciation and amortization   3,437 46,085 45,027
Corporate expenses        
Segment Reporting Information [Line Items]        
Depreciation and amortization   $ 22,434 $ 16,462 $ 16,553