Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Summary Of Significant Accounting Policies [Line Items]
Reserves related to uncollectible accounts and refunds	$ 44.4	$ 52.5	$ 44.4	$ 52.5
Net balance of capitalized software development costs	54.1	69.3	54.1	69.3
Ownership interest of parent in subsidiary					93.50%
Anti-dilutive shares excluded from computations of earnings per share	2,298,000	3,000,000	2,158,000	2,743,000
Cumulative translation gains (losses)	25.6	6.5	25.6	6.5
Advertising expense	67.8	60.9	140.8	127.6
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	2.6	2.6	2.6	2.6
Internal Use Software
Summary Of Significant Accounting Policies [Line Items]
Finite Lived Intangible Asset Useful Life			5 years
Project DELTA
Summary Of Significant Accounting Policies [Line Items]
Cost capitalized	0.3	0.3	0.5	2.4
DeVry Inc.
Summary Of Significant Accounting Policies [Line Items]
Ownership interest of parent in subsidiary	96.30%		96.30%
Cumulative translation gains (losses)	24.7	5.7	24.7	5.7
Available-for-sale Securities, Gross Unrealized Gain (Loss)			0.2	0.1
Tax effect on unrealized losses on available-for-sale securities			0.1	0.1
Noncontrolling Interest
Summary Of Significant Accounting Policies [Line Items]
Cumulative translation gains (losses)	$ 0.9	$ 0.8	$ 0.9	$ 0.8
Devry Brasil Senior Management Group [Member]
Summary Of Significant Accounting Policies [Line Items]
Minority Interest Ownership Percentage	3.70%		3.70%