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Document And Entity Information - USD ($)
 12 Months Ended
Jun. 30, 2020
Aug. 11, 2020
Dec. 31, 2019
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jun. 30, 2020    
Document Transition Report false    
Entity File Number 001-13988    
Entity Registrant Name Adtalem Global Education Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 36-3150143    
Entity Address, Address Line One 500 West Monroe Street    
Entity Address, City or Town Chicago    
Entity Address, State or Province IL    
Entity Address, Postal Zip Code 60661    
City Area Code 866    
Local Phone Number 374-2678    
Title of 12(b) Security Common stock    
Trading Symbol ATGE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 1,833,712,343
Entity Common Stock, Shares Outstanding   51,876,303  
Current Fiscal Year End Date --06-30    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000730464    
Amendment Flag false    
New York Stock Exchange      
Document Information [Line Items]      
Security Exchange Name NYSE    
NYSE Chicago      
Document Information [Line Items]      
Security Exchange Name NYSE