Restructuring and Related Charges - Pretax Restructuring Charges (Credits) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	$ 3,627	$ 25,102	$ 7,497	$ 37,225
Global Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	3,681	24,755	11,230	36,535
Total Charges Incurred to Date	121,666		121,666
Global Restructuring Program \| Corporate Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	2,507	12,119	7,748	19,111
Total Charges Incurred to Date	75,997		75,997
Global Restructuring Program \| Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	2,244	18,619	8,026	24,563
Total Charges Incurred to Date	62,409		62,409
Global Restructuring Program \| Impairment of operating lease ROU assets and property and equipment
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	0	0	0	1,575
Total Charges Incurred to Date	22,739		22,739
Global Restructuring Program \| Acceleration of expense related to operating lease ROU assets and property and equipment
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	0	152	0	516
Total Charges Incurred to Date	6,288		6,288
Global Restructuring Program \| Facility related charges, net
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	1,365	558	2,767	1,387
Total Charges Incurred to Date	11,171		11,171
Global Restructuring Program \| Consulting (credits) costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	(116)	3,966	(672)	5,789
Total Charges Incurred to Date	10,580		10,580
Global Restructuring Program \| Other activities
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	188	1,460	1,109	2,705
Total Charges Incurred to Date	8,479		8,479
Global Restructuring Program \| Research \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	939	4,755	3,262	6,702
Total Charges Incurred to Date	13,085		13,085
Global Restructuring Program \| Learning \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	110	5,859	337	6,077
Total Charges Incurred to Date	19,589		19,589
Global Restructuring Program \| Held for Sale or Sold \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring and Related (Credits) Charges	125	$ 2,022	(117)	$ 4,645
Total Charges Incurred to Date	$ 12,995		$ 12,995