Related Party Transactions Related Party Transactions (Details) (USD $)	1 Months Ended	12 Months Ended
	Oct. 31, 2009	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Related Party Transaction [Line Items]
Fee paid to terminate management agreement with sponsors	$ 29,600,000	$ 0	$ 0	$ 29,555,000
Affiliate Of Related Party [Member]
Related Party Transaction [Line Items]
Expenses from Transactions with Related Party			1,100,000
Related Party Transaction, Joint Underwriters				1
Underwriting Fees, Amount Paid				5,500,000
Selling, General and Administrative Transactions with Related Party, Amounts Paid				500,000
Debt Instrument, Debt Repurchases				2
Sponsors [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Amounts of Transaction			5,000,000
Fee paid to terminate management agreement with sponsors	29,600,000
John T. South [Member]
Related Party Transaction [Line Items]
Related Party, Long-term Lease Agreements		2
Related Party Transaction, Transactions with Officers or Stockholders		1
Transactions with Related Party, Amounts Paid		2,100,000	2,200,000	1,700,000
Campus Management Corporation [Member]
Related Party Transaction [Line Items]
Transactions with Related Party, Amounts Paid		2,100,000	3,500,000	600,000
Related Party Transaction, Transactions with Other Related Parties		1
People Scout, Inc DBA Student Scout [Member]
Related Party Transaction [Line Items]
Servicing Fees, Amount Paid		1,800,000	2,800,000	1,400,000
Affiliate of Sponsor, Ex Libris [Member]
Related Party Transaction [Line Items]
Servicing Fees, Amount Paid		300,000	500,000	200,000
CDW Corporation and Affiliates [Member]
Related Party Transaction [Line Items]
Selling, General and Administrative Transactions with Related Party, Amounts Paid		300,000	1,800,000	6,700,000
Related Party Transaction, Transactions with Other Related Parties			1
NexTag, Inc. [Member]
Related Party Transaction [Line Items]
Selling, General and Administrative Transactions with Related Party, Amounts Paid			400,000	1,600,000
Assessment Technologies Instiute, LLC [Member]
Related Party Transaction [Line Items]
Selling, General and Administrative Transactions with Related Party, Amounts Paid		500,000	600,000	500,000
Kroll Ontrack [Member]
Related Party Transaction [Line Items]
Selling, General and Administrative Transactions with Related Party, Amounts Paid		400,000	1,000,000
USSA Security Services [Member]
Related Party Transaction [Line Items]
Selling, General and Administrative Transactions with Related Party, Amounts Paid		2,700,000
Interest Rate Swap [Member]
Related Party Transaction [Line Items]
Derivative, Notional Amount			950,000,000
Swap, Interest Rate Swaps, Maturity Fiscal 2015 [Member] | Interest Rate Swap [Member]
Related Party Transaction [Line Items]
Derivative, Notional Amount			312,500,000
Swap, Interest Rate Swaps, Maturity Fiscal 2015 [Member] | Interest Rate Swap [Member] | Affiliate Of Related Party [Member]
Related Party Transaction [Line Items]
Derivative, Notional Amount			312,500,000
Term Loan [Member]
Related Party Transaction [Line Items]
Payments of Financing Costs		$ 700,000