Goodwill and Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 305,191	$ 87,200	$ 87,200
Amortizable Intangible Assets, Accumulated Amortization	(53,600)	(34,663)	(27,108)
Indefinite-lived Intangible Assets, Gross Carrying Amount	839,072	223,712	224,935
Student Relationships [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	161,900
Amortizable Intangible Assets, Accumulated Amortization	$ (15,049)
Amortizable Intangible Assets, Weighted Average Amortization Period	3 years
Customer Relationships [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 68,900	68,900	68,900
Amortizable Intangible Assets, Accumulated Amortization	$ (29,511)	(27,844)	(22,744)
Amortizable Intangible Assets, Weighted Average Amortization Period	10 years
Curriculum/software [Member]
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 67,691	11,600	11,600
Amortizable Intangible Assets, Accumulated Amortization	$ (5,913)	(4,028)	(2,578)
Amortizable Intangible Assets, Weighted Average Amortization Period	5 years
Course Delivery Technology
Intangible Assets [Line Items]
Amortizable Intangible Assets, Gross Carrying Amount	$ 6,700	6,700	6,700
Amortizable Intangible Assets, Accumulated Amortization	$ (3,127)	(2,791)	(1,786)
Amortizable Intangible Assets, Weighted Average Amortization Period	5 years
Walden Trade Name [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 119,560
AUC Trade Name [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	17,100	17,100	17,100
Ross Trade Name [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	5,100	5,100	5,100
Financial Services Trade Names [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	72,272	72,272	73,495
Chamberlain Title IV Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	1,200	1,200	1,200
Walden Title IV eligibility and accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	495,800
AUC Title IV Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	100,000	100,000	100,000
Ross Title IV Eligibility And Accreditations [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	14,100	14,100	14,100
Intellectual Property [Member]
Intangible Assets [Line Items]
Indefinite-lived Intangible Assets, Gross Carrying Amount	$ 13,940	$ 13,940	$ 13,940