Goodwill and Intangible Assets (Summary of Goodwill Balances by Reporting Unit) (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019
Goodwill [Line Items]
Goodwill	$ 686,480	$ 686,214	$ 686,992
Chamberlain University [Member]
Goodwill [Line Items]
Goodwill	4,716	4,716	4,716
AUC [Member]
Goodwill [Line Items]
Goodwill	68,321	68,321	68,321
RUSM and RUSVM [Member]
Goodwill [Line Items]
Goodwill	237,173	237,173	237,173
Financial Services [Member]
Goodwill [Line Items]
Goodwill	$ 376,270	$ 376,004	$ 376,782