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Goodwill and Intangible Assets (Summary of Indefinite-Lived Intangible Assets Balances by Reporting Segment) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items]      
Indefinite-lived intangible assets balances $ 752,860 $ 137,500 $ 137,500
Chamberlain University Segment [Member]      
Indefinite-lived Intangible Assets [Line Items]      
Indefinite-lived intangible assets balances 1,200 1,200 1,200
Walden University      
Indefinite-lived Intangible Assets [Line Items]      
Indefinite-lived intangible assets balances 615,360 0 0
Medical and Veterinary [Member]      
Indefinite-lived Intangible Assets [Line Items]      
Indefinite-lived intangible assets balances $ 136,300 $ 136,300 $ 136,300