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INTANGIBLE ASSETS (Summary of Goodwill Balances by Reporting Unit) (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Goodwill [Line Items]    
Goodwill $ 851,282 $ 588,007
Chamberlain [Member]    
Goodwill [Line Items]    
Goodwill 4,716 4,716
AUC [Member]    
Goodwill [Line Items]    
Goodwill 68,321 68,321
RUSM and RUSVM [Member]    
Goodwill [Line Items]    
Goodwill 237,173 237,173
Becker [Member]    
Goodwill [Line Items]    
Goodwill 306,653 32,043
DeVry University [Member]    
Goodwill [Line Items]    
Goodwill 22,196 22,196
Adtalem Brazil [Member]    
Goodwill [Line Items]    
Goodwill $ 212,223 $ 223,558