Restructuring and Related Charges - Pretax Restructuring Charges (Credits) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	$ 5,574	$ 14,808	$ 13,071	$ 52,033
Global Restructuring Program
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	5,614	14,414	16,844	50,949
Total Charges Incurred to Date	127,280		127,280
Global Restructuring Program \| Corporate Expenses
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	4,537	12,352	12,285	31,463
Total Charges Incurred to Date	80,534		80,534
Global Restructuring Program \| Severance and termination benefits
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	4,030	1,098	12,056	25,661
Total Charges Incurred to Date	66,439		66,439
Global Restructuring Program \| Impairment of operating lease ROU assets and property and equipment
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	0	7,149	0	8,724
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]
Total Restructuring and Related Charges	0	548	0	1,064
Total Charges Incurred to Date	6,288		6,288
Global Restructuring Program \| Facility related charges, net
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	1,294	1,531	4,061	2,918
Total Charges Incurred to Date	12,465		12,465
Global Restructuring Program \| Consulting costs (credits)
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	80	2,032	(592)	7,821
Total Charges Incurred to Date	10,660		10,660
Global Restructuring Program \| Other activities
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	210	2,056	1,319	4,761
Total Charges Incurred to Date	8,689		8,689
Global Restructuring Program \| Research \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	939	(749)	4,201	5,953
Total Charges Incurred to Date	14,024		14,024
Global Restructuring Program \| Learning \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	138	1,313	475	7,390
Total Charges Incurred to Date	19,727		19,727
Global Restructuring Program \| Held for Sale or Sold \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total Restructuring and Related Charges	0	$ 1,498	(117)	$ 6,143
Total Charges Incurred to Date	$ 12,995		$ 12,995