Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Continuing operations	$ 2,464	$ 5,857	$ 39,034	$ (77,182)	$ 2,565	$ 24,238	$ 23,941	$ 19,586	$ (29,827)	$ 70,330	$ 219,925
Discontinued operations	5,550	343,985	(21,181)	19,178	6,447	414	(626)	344	347,532	6,579	(305,259)
Net income (loss) attributable to Adtalem	$ 8,014	$ 349,842	$ 17,853	$ (58,004)	$ 9,012	$ 24,652	$ 23,315	$ 19,930	$ 317,705	$ 76,909	$ (85,334)
Denominator:
Weighted-average basic shares outstanding									48,388	51,322	53,659
Effect of dilutive stock awards									0	323	435
Weighted-average diluted shares outstanding									48,388	51,645	54,094
Basic:
Continuing operations	$ 0.05	$ 0.12	$ 0.78	$ (1.55)	$ 0.05	$ 0.48	$ 0.46	$ 0.37	$ (0.62)	$ 1.37	$ 4.10
Discontinued operations	0.12	7.03	(0.43)	0.39	0.13	0.01	(0.01)	0.01	7.18	0.13	(5.69)
Total basic earnings (loss) per share	0.18	7.15	0.36	(1.17)	0.18	0.49	0.45	0.38	6.57	1.50	(1.59)
Diluted:
Continuing operations	0.05	0.12	0.78	(1.55)	0.05	0.47	0.46	0.37	(0.62)	1.36	4.07
Discontinued operations	0.12	6.97	(0.42)	0.39	0.13	0.01	(0.01)	0.01	7.18	0.13	(5.64)
Total diluted earnings (loss) per share	$ 0.18	$ 7.09	$ 0.36	$ (1.17)	$ 0.18	$ 0.48	$ 0.44	$ 0.38	$ 6.57	$ 1.49	$ (1.58)
Weighted-average anti-dilutive shares									416
Authorized amount for repurchase	$ 150,000								$ 150,000
Weighted Average
Diluted:
Weighted-average anti-dilutive shares									1,869	1,143	973