Segments - Schedule of Financial Highlights by Operating Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 676,538	$ 676,873	$ 2,041,259	$ 2,095,582
Adjusted EBITDA	114,489	101,704	342,725	295,904
Operating Segments | Consulting
Segment Reporting Information [Line Items]
Total revenue	161,382	169,929	501,533	521,675
Adjusted EBITDA	28,026	27,812	86,426	81,920
Operating Segments | Digital
Segment Reporting Information [Line Items]
Total revenue	90,836	90,394	272,085	275,563
Adjusted EBITDA	28,408	27,370	84,219	80,678
Operating Segments | North America
Segment Reporting Information [Line Items]
Total revenue	129,889	123,059	397,395	386,405
Adjusted EBITDA	37,175	29,382	109,180	87,574
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Total revenue	48,087	49,171	141,495	139,621
Adjusted EBITDA	7,845	7,799	22,597	19,056
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Total revenue	21,794	21,384	64,038	65,454
Adjusted EBITDA	4,504	4,500	13,154	14,690
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Total revenue	6,807	7,543	21,992	22,050
Adjusted EBITDA	1,696	1,750	7,046	4,296
Operating Segments | Professional Search & Interim
Segment Reporting Information [Line Items]
Total revenue	130,854	131,824	375,572	414,348
Adjusted EBITDA	27,265	23,795	80,174	73,746
Operating Segments | RPO
Segment Reporting Information [Line Items]
Total revenue	86,889	83,569	267,149	270,466
Adjusted EBITDA	12,743	9,291	38,136	28,617
Corporate
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Adjusted EBITDA	(33,173)	(29,995)	(98,207)	(94,673)
Fee revenue
Segment Reporting Information [Line Items]
Total revenue	668,729	668,679	2,018,040	2,071,871
Fee revenue | Operating Segments | Consulting
Segment Reporting Information [Line Items]
Total revenue	158,704	166,947	493,345	512,830
Fee revenue | Operating Segments | Digital
Segment Reporting Information [Line Items]
Total revenue	90,823	90,317	271,896	275,395
Fee revenue | Operating Segments | North America
Segment Reporting Information [Line Items]
Total revenue	128,264	121,449	392,907	381,459
Fee revenue | Operating Segments | EMEA
Segment Reporting Information [Line Items]
Total revenue	47,840	48,999	140,609	138,873
Fee revenue | Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Total revenue	21,664	21,324	63,707	65,167
Fee revenue | Operating Segments | Latin America
Segment Reporting Information [Line Items]
Total revenue	6,803	7,541	21,982	22,041
Fee revenue | Operating Segments | Professional Search & Interim
Segment Reporting Information [Line Items]
Total revenue	129,957	130,890	372,805	411,453
Fee revenue | Operating Segments | RPO
Segment Reporting Information [Line Items]
Total revenue	$ 84,674	$ 81,212	$ 260,789	$ 264,653