Segments - Financial Highlights (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 2,795,505	$ 2,863,836	$ 2,643,455
Net income attributable to Korn Ferry	169,154	209,529	326,360
Net income attributable to noncontrolling interest	3,407	3,525	4,485
Other (income) loss, net	(30,681)	(5,261)	11,880
Interest expense, net	20,968	25,864	25,293
Income tax provision	50,081	82,683	102,056
Operating income	212,929	316,340	470,074
Depreciation and amortization	77,966	68,335	63,521
Other income (loss), net	30,681	5,261	(11,880)
Integration/acquisition costs	14,866	14,922	7,906
Impairment of fixed assets	1,575	4,375	1,915
Impairment of right-of-use assets	1,629	5,471	7,392
Restructuring charges, net	68,558	42,573	0
Adjusted EBITDA	408,204	457,277	538,928
Fee revenue
Segment Reporting Information [Line Items]
Total revenue	$ 2,762,671	$ 2,835,408	$ 2,626,718