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Goodwill and Intangible Assets (Summary of Indefinite-Lived Intangible Assets Balances by Reporting Segment) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
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Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets balances | $ 752,860 | $ 752,860
Chamberlain |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets balances | 1,200 | 1,200
Walden |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets balances | 615,360 | 615,360
Medical and Veterinary |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets balances | $ 136,300 | $ 136,300

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