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Revenue (Disaggregate revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 369,082	$ 364,281	$ 1,086,185	$ 1,021,195
Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	365,970	361,512	1,077,565	1,013,137
Other
Disaggregation of Revenue [Line Items]
Revenue	3,112	2,769	8,620	8,058
Chamberlain
Disaggregation of Revenue [Line Items]
Revenue	149,737	142,550	426,538	417,310
Chamberlain | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	149,737	142,550	426,538	417,310
Chamberlain | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Walden University
Disaggregation of Revenue [Line Items]
Revenue	132,874	139,081	395,715	348,325
Walden University | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	132,874	139,081	395,715	348,325
Walden University | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Medical and Veterinary
Disaggregation of Revenue [Line Items]
Revenue	86,471	82,650	263,932	255,560
Medical and Veterinary | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	83,359	79,881	255,312	247,502
Medical and Veterinary | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 3,112	$ 2,769	$ 8,620	$ 8,058

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