Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended		9 Months Ended				9 Months Ended		12 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2011	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2012 American University Of Caribbean [Member]	Mar. 31, 2012 Carrington [Member]	Dec. 31, 2011 Carrington [Member]	Mar. 31, 2012 Carrington [Member]	Mar. 31, 2012 Advanced Academics [Member]	Mar. 31, 2012 Accreditation And Title IV Eligibility [Member]	Mar. 31, 2012 Accreditation And Title IV Eligibility [Member] Carrington [Member]	Mar. 31, 2012 Carrington [Member]	Mar. 31, 2012 Faculdade Boa Viagem [Member]	Jun. 30, 2011 Indefinite-Lived Intangible Assets [Member] Carrington [Member] Y	Jun. 30, 2011 Reporting Unit [Member] Carrington [Member] Y	Mar. 31, 2012 Business, Technology And Management [Member]	Jun. 30, 2011 Business, Technology And Management [Member]	Mar. 31, 2012 Medical And Healthcare [Member]	Jun. 30, 2011 Medical And Healthcare [Member]	Mar. 31, 2012 International, K-12 And Professional Education [Member]	Jun. 30, 2011 International, K-12 And Professional Education [Member]
Intangible Assets [Line Items]
Asset Divestitures				$ (413,000)																	$ (413,000)
Amortization expense for amortized intangible assets	2,800,000	1,500,000	4,500,000	7,800,000
Indefinite-lived Intangible Assets	266,801,000	177,603,000	177,603,000	266,801,000		117,100,000								15,800,000
Impairment loss associated with recorded goodwill or indefinite-lived intangible assets, as estimated fair values exceeded carrying amount											41,200,000		41,200,000
Minimum percentage of estimated fair values of reporting units and indefinite-lived intangible assets exceeding carrying values					15.00%
Term of long-term planning, in years															5	5
Discount rate															14.00%	13.00%
Goodwill, fair value											71,100,000
Goodwill	567,316,000	517,822,000	517,822,000	567,316,000	523,620,000					17,100,000			151,900,000				22,196,000	22,196,000	462,088,000	427,606,000	83,032,000	73,818,000
Amount by which reporting value is less than carrying value							33,800,000		33,800,000			41,200,000
Percentage of revenue declined								27.00%		5.00%
Percentage of excess fair value over carrying value										27.00%
Goodwill and asset impairment charges				75,039,000
Goodwill and other intangibles impairment charges, income tax benefit							19,300,000
Goodwill written down				33,839,000					33,800,000										33,839,000
Increased in indefinite-lived intangible assets				88,700,000
Acquisitions				$ 82,413,000															$ 68,321,000		$ 14,092,000