Goodwill and Intangible Assets (Summary of Indefinite-Lived Intangible Assets Balances by Reporting Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	$ 752,860	$ 752,860
Title IV eligibility and accreditations
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	611,100	611,100
Trade name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets balances	$ 141,760	$ 141,760