CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	53,190
Beginning balance	$ 1,549,589	$ 1,368,775	$ 1,223,691
Net income	213,054	330,845	115,562
Other comprehensive income (loss)	308	(40,541)	55,435
Dividends paid to shareholders	(32,971)	(26,786)	(22,498)
Dividends paid to noncontrolling interest	(4,721)	(1,452)	(1,115)
Purchase of stock	(116,139)	(117,301)	(35,376)
Issuance of stock	8,452	7,688	6,560
Stock-based compensation	$ 35,433	$ 28,361	26,516
Ending balance (in shares)	52,269	53,190
Ending balance	$ 1,653,005	$ 1,549,589	1,368,775
Total Korn Ferry Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,544,346	1,366,389	1,221,381
Net income	209,529	326,360	114,454
Other comprehensive income (loss)	(579)	(40,365)	55,352
Dividends paid to shareholders	(32,971)	(26,786)	(22,498)
Purchase of stock	(116,139)	(117,301)	(35,376)
Issuance of stock	8,452	7,688	6,560
Stock-based compensation	35,433	28,361	26,516
Ending balance	$ 1,648,071	$ 1,544,346	$ 1,366,389
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	53,190	54,008	54,450
Beginning balance	$ 502,008	$ 583,260	$ 585,560
Purchase of stock (in shares)	(2,082)	(1,743)	(1,146)
Purchase of stock	$ (116,139)	$ (117,301)	$ (35,376)
Issuance of stock (in shares)	1,161	925	704
Issuance of stock	$ 8,452	$ 7,688	$ 6,560
Stock-based compensation	$ 35,433	$ 28,361	$ 26,516
Ending balance (in shares)	52,269	53,190	54,008
Ending balance	$ 429,754	$ 502,008	$ 583,260
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,134,523	834,949	742,993
Net income	209,529	326,360	114,454
Dividends paid to shareholders	(32,971)	(26,786)	(22,498)
Ending balance	1,311,081	1,134,523	834,949
Accumulated Other Comprehensive Loss, Net
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(92,185)	(51,820)	(107,172)
Other comprehensive income (loss)	(579)	(40,365)	55,352
Ending balance	(92,764)	(92,185)	(51,820)
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	5,243	2,386	2,310
Net income	3,525	4,485	1,108
Other comprehensive income (loss)	887	(176)	83
Dividends paid to noncontrolling interest	(4,721)	(1,452)	(1,115)
Ending balance	$ 4,934	$ 5,243	$ 2,386