SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2013
Summary Of Significant Accounting Policies [Line Items]
Reserves related to uncollectible accounts and refunds	$ 61,600,000	$ 44,400,000	$ 61,600,000	$ 44,400,000
Cost capitalized	300,000	300,000	600,000	500,000
Net balance of capitalized software development costs	39,400,000	54,100,000	39,400,000	54,100,000
Anti-dilutive shares excluded from computations of earnings per share	624,000	2,298,000	810,000	2,158,000
Cumulative translation gains (losses)	44,300,000	25,600,000	44,300,000	25,600,000
Advertising expense	65,600,000	67,800,000	131,800,000	140,800,000
Provision for Doubtful Accounts			45,627,000	37,274,000
Impairment of Leasehold	3,000,000	800,000	3,000,000	1,500,000
Student Refundable Fees, Refund Payments	9,500,000	9,000,000	18,500,000	17,400,000
Prepaid Expenses And Other		42,600,000		42,600,000
Income Taxes Receivable, Current		7,000,000		7,000,000
Educational Services [Member]
Summary Of Significant Accounting Policies [Line Items]
Provision for Doubtful Accounts	15,500,000	10,400,000	27,500,000	19,900,000
Perkins Student Loan Fund
Summary Of Significant Accounting Policies [Line Items]
Percentage of Contributions by DeVry Inc.	33.00%		33.00%
Investment at original values, net of allowances for expected losses on loan collections	2,600,000	2,600,000	2,600,000	2,600,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Minimum protective endowment related to continuing operation in Pennsylvania	500,000		500,000
DeVry Brasil
Summary Of Significant Accounting Policies [Line Items]
Ownership interest of parent in subsidiary	3.70%		3.70%
DeVry Inc.
Summary Of Significant Accounting Policies [Line Items]
Ownership interest of parent in subsidiary	96.30%		96.30%		83.50%
Cumulative translation gains (losses)	42,700,000	24,700,000	42,700,000	24,700,000
Available-for-sale Securities, Gross Unrealized Gain (Loss)			200,000	100,000
Tax effect on unrealized losses on available-for-sale securities			100,000	100,000
Noncontrolling Interest
Summary Of Significant Accounting Policies [Line Items]
Cumulative translation gains (losses)	$ 1,600,000	$ 900,000	$ 1,600,000	$ 900,000