CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Total Korn Ferry Stockholders' Equity	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss, Net	Noncontrolling Interest
Beginning balance (in shares) at Apr. 30, 2021			54,008
Beginning balance at Apr. 30, 2021	$ 1,368,775	$ 1,366,389	$ 583,260	$ 834,949	$ (51,820)	$ 2,386
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	76,397	74,823		74,823		1,574
Other comprehensive loss	(7,999)	(8,023)			(8,023)	24
Dividends paid to shareholders	(6,866)	(6,866)		(6,866)
Purchase of stock (in shares)			(297)
Purchase of stock	(20,091)	(20,091)	$ (20,091)
Issuance of stock (in shares)			795
Issuance of stock	3,992	3,992	$ 3,992
Stock-based compensation	6,962	6,962	$ 6,962
Ending balance (in shares) at Jul. 31, 2021			54,506
Ending balance at Jul. 31, 2021	1,421,170	1,417,186	$ 574,123	902,906	(59,843)	3,984
Beginning balance (in shares) at Apr. 30, 2021			54,008
Beginning balance at Apr. 30, 2021	1,368,775	1,366,389	$ 583,260	834,949	(51,820)	2,386
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	237,786
Ending balance (in shares) at Jan. 31, 2022			54,216
Ending balance at Jan. 31, 2022	1,535,245	1,531,277	$ 562,564	1,049,431	(80,718)	3,968
Beginning balance (in shares) at Jul. 31, 2021			54,506
Beginning balance at Jul. 31, 2021	1,421,170	1,417,186	$ 574,123	902,906	(59,843)	3,984
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	76,332	75,772		75,772		560
Other comprehensive loss	(6,865)	(6,687)			(6,687)	(178)
Dividends paid to shareholders	(6,683)	(6,683)		(6,683)
Purchase of stock (in shares)			(99)
Purchase of stock	(7,353)	(7,353)	$ (7,353)
Issuance of stock (in shares)			59
Issuance of stock	0
Stock-based compensation	7,288	7,288	$ 7,288
Ending balance (in shares) at Oct. 31, 2021			54,466
Ending balance at Oct. 31, 2021	1,483,889	1,479,523	$ 574,058	971,995	(66,530)	4,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	85,057	84,101		84,101		956
Other comprehensive loss	(14,235)	(14,188)			(14,188)	(47)
Dividends paid to shareholders	(6,665)	(6,665)		(6,665)
Dividends paid to noncontrolling interest	(1,307)					(1,307)
Purchase of stock (in shares)			(307)
Purchase of stock	(22,331)	(22,331)	$ (22,331)
Issuance of stock (in shares)			57
Issuance of stock	3,696	3,696	$ 3,696
Stock-based compensation	7,141	7,141	$ 7,141
Ending balance (in shares) at Jan. 31, 2022			54,216
Ending balance at Jan. 31, 2022	$ 1,535,245	1,531,277	$ 562,564	1,049,431	(80,718)	3,968
Beginning balance (in shares) at Apr. 30, 2022	53,190		53,190
Beginning balance at Apr. 30, 2022	$ 1,549,589	1,544,346	$ 502,008	1,134,523	(92,185)	5,243
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	78,536	77,247		77,247		1,289
Other comprehensive loss	(16,307)	(16,259)			(16,259)	(48)
Dividends paid to shareholders	(8,703)	(8,703)		(8,703)
Purchase of stock (in shares)			(735)
Purchase of stock	(44,276)	(44,276)	$ (44,276)
Issuance of stock (in shares)			1,047
Issuance of stock	4,857	4,857	$ 4,857
Stock-based compensation	7,538	7,538	$ 7,538
Ending balance (in shares) at Jul. 31, 2022			53,502
Ending balance at Jul. 31, 2022	$ 1,571,234	1,564,750	$ 470,127	1,203,067	(108,444)	6,484
Beginning balance (in shares) at Apr. 30, 2022	53,190		53,190
Beginning balance at Apr. 30, 2022	$ 1,549,589	1,544,346	$ 502,008	1,134,523	(92,185)	5,243
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 164,920
Ending balance (in shares) at Jan. 31, 2023	52,522		52,522
Ending balance at Jan. 31, 2023	$ 1,613,014	1,608,979	$ 434,163	1,271,618	(96,802)	4,035
Beginning balance (in shares) at Jul. 31, 2022			53,502
Beginning balance at Jul. 31, 2022	1,571,234	1,564,750	$ 470,127	1,203,067	(108,444)	6,484
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	74,615	73,541		73,541		1,074
Other comprehensive loss	(27,978)	(28,221)			(28,221)	243
Dividends paid to shareholders	(8,171)	(8,171)		(8,171)
Dividends paid to noncontrolling interest	(3,133)					(3,133)
Purchase of stock (in shares)			(627)
Purchase of stock	(33,286)	(33,286)	$ (33,286)
Issuance of stock (in shares)			34
Issuance of stock	0
Stock-based compensation	9,439	9,439	$ 9,439
Ending balance (in shares) at Oct. 31, 2022			52,909
Ending balance at Oct. 31, 2022	1,582,720	1,578,052	$ 446,280	1,268,437	(136,665)	4,668
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,769	11,247		11,247		522
Other comprehensive loss	40,296	39,863			39,863	433
Dividends paid to shareholders	(8,066)	(8,066)		(8,066)
Dividends paid to noncontrolling interest	(1,588)					(1,588)
Purchase of stock (in shares)			(464)
Purchase of stock	(25,062)	(25,062)	$ (25,062)
Issuance of stock (in shares)			77
Issuance of stock	3,595	3,595	$ 3,595
Stock-based compensation	$ 9,350	9,350	$ 9,350
Ending balance (in shares) at Jan. 31, 2023	52,522		52,522
Ending balance at Jan. 31, 2023	$ 1,613,014	$ 1,608,979	$ 434,163	$ 1,271,618	$ (96,802)	$ 4,035