Description of Business and Change in Ownership Description of Business and Change in Ownership (Details) (USD $)	1 Months Ended		12 Months Ended
	Oct. 31, 2009	Sep. 30, 2009	Jun. 30, 2012 Education_Systems	Jun. 30, 2011	Jun. 30, 2010	Oct. 31, 2011 Students
Number of students						151,200
Online platforms			3
Number of education systems			4
Long-term Debt			$ 1,465,544,000
Common Stock, Shares, Issued	23,000,000
Common Stock, Par Value	$ 0.01		$ 0.01	$ 0.01
Price Per Share	$ 18.00
Proceeds from Issuance of Common Stock	387,300,000
Debt Instrument, Repurchase Amount	355,500,000
Fee paid to terminate management agreement with sponsors	29,600,000		0	0	29,555,000
Line of Credit Facility, Amount Outstanding	385,000,000
Stockholders' Equity Note, Stock Split, Conversion Ratio		4.4737
Senior Notes [Member]
Long-term Debt			375,000,000
Stated Percentage			8.75%
Senior Subordinated Notes [Member]
Long-term Debt			385,000,000
Stated Percentage			10.25%
Debt Instrument, Repurchased Face Amount	$ 316,000,000
Title IV Programs [Member] | Net Revenues [Member]
Concentration Risk, Percentage			79.00%	78.00%