Restructuring Charges - Additional information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012 Employee	Jun. 30, 2012
Restructuring And Other [Line Items]
Number of employees reduced in connection with reduction in force (RIF)	570
Restructuring Expenses	$ 7,100,000	$ 7,102,000
Cash payment for Severance charges and restructuring charges		1,400,000
Accrued severance and restructuring charges	5,700,000	5,700,000
Business, Technology and Management
Restructuring And Other [Line Items]
Restructuring Expenses	5,000,000
Medical and Healthcare
Restructuring And Other [Line Items]
Restructuring Expenses	2,000,000
International K-12 and Professional Education
Restructuring And Other [Line Items]
Restructuring Expenses	$ 100,000