Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Revenue recognition
Amounts recorded as revenues and school operating expenses	$ 62.3	$ 68.7
Reduction in school operating losses included in the entity's revenue	$ 14.2	$ 17.6
Minimum
Revenue recognition
Duration of contracts providing access to curriculum via the entity's Web site	1 year
Maximum
Revenue recognition
Duration of contracts providing access to curriculum via the entity's Web site	2 years