Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
Dec. 31, 2011 years	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option term, in years, maximum	10
Options granted, maximum vesting period, in years	five
Total intrinsic value of options exercised	$ 2.3	$ 0.4
Grant of restricted stock to selected employees and non-employee directors	449,200
Total pre-tax unrecognized compensation costs related to non-vested awards	31.4
Total pre-tax unrecognized compensation costs related to non-vested awards expected to be recognized, years	2.7
Total fair value of options and shares vested	8.9	7.0
Capitalized stock-based compensation costs	$ 0	$ 0
DeVry's Stock Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, authorized and unissued, reserved for future issuance	7,166,186
DeVry's Stock Options Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average estimated grant date fair values, for options granted at market price, per share	$ 17.48	$ 16.53
Restricted Stock [Member] \| DeVry Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, minimum vesting period, in years	three
Options granted, maximum vesting period, in years	four
Grant of restricted stock to selected employees and non-employee directors	277,510
Performance Based Shares [Member] \| DeVry Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of restricted stock to selected employees and non-employee directors	62,280
Non-Performance Based Shares [Member] \| DeVry Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of restricted stock to selected employees and non-employee directors	215,230

Common Stock Shares Authorized But Unissued Shares Reserved For Future Issuance

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Stock Option Term

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The maximum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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The minimum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

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- Definition

The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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- Definition

Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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