Fee Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2026	Jul. 31, 2025
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 764,622	$ 715,543
Fee revenue
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 756,496	$ 708,613
Fee revenue, percentage	100.00%	100.00%
Fee revenue \| AMERICAS
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 442,129	$ 404,135
Fee revenue, percentage	58.40%	57.00%
Fee revenue \| AMERICAS \| Search
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 209,325	$ 183,723
Fee revenue, percentage	27.70%	25.90%
Fee revenue \| AMERICAS \| Talent & Organizational Solutions
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 106,853	$ 110,061
Fee revenue, percentage	14.10%	15.50%
Fee revenue \| AMERICAS \| Workforce Solutions
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 125,951	$ 110,351
Fee revenue, percentage	16.60%	15.60%
Fee revenue \| EMEA
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 227,670	$ 218,955
Fee revenue, percentage	30.10%	30.90%
Fee revenue \| EMEA \| Search
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 66,836	$ 65,499
Fee revenue, percentage	8.80%	9.20%
Fee revenue \| EMEA \| Talent & Organizational Solutions
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 115,366	$ 111,415
Fee revenue, percentage	15.30%	15.70%
Fee revenue \| EMEA \| Workforce Solutions
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 45,468	$ 42,041
Fee revenue, percentage	6.00%	5.90%
Fee revenue \| APAC
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 86,697	$ 85,523
Fee revenue, percentage	11.50%	12.10%
Fee revenue \| APAC \| Search
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 31,737	$ 29,702
Fee revenue, percentage	4.20%	4.20%
Fee revenue \| APAC \| Talent & Organizational Solutions
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 37,001	$ 37,684
Fee revenue, percentage	4.90%	5.30%
Fee revenue \| APAC \| Workforce Solutions
Disaggregation Of Revenue [Line Items]
Fee revenue	$ 17,959	$ 18,137
Fee revenue, percentage	2.40%	2.60%