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SUBSEQUENT EVENTS - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Dec. 31, 2014
Damasio Educacional [Member]  
Payments to Acquire Businesses, Gross $ 92.0us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= dv_DamasioEducacionalMember
Number Of Students In Degree Programs 50,000dv_NumberOfStudentsInDegreePrograms
/ us-gaap_BusinessAcquisitionAxis
= dv_DamasioEducacionalMember
Faculdade Ideal [Member]  
Payments to Acquire Businesses, Gross $ 14.6us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= dv_FaculdadeIdealMember
Number Of Students In Degree Programs 2,500dv_NumberOfStudentsInDegreePrograms
/ us-gaap_BusinessAcquisitionAxis
= dv_FaculdadeIdealMember