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Goodwill and Intangible Assets (Summary of Indefinite-Lived Intangible Assets Balances by Reporting Segment) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Jun. 30, 2024
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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

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