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Revenue (Disaggregate revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 1,450,826	$ 1,381,842	$ 899,248
Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	1,439,082	1,371,311	895,973
Other
Disaggregation of Revenue [Line Items]
Revenue	11,744	10,531	3,275
Chamberlain
Disaggregation of Revenue [Line Items]
Revenue	571,034	557,536	563,814
Chamberlain | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	571,034	557,536	563,814
Chamberlain | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Walden
Disaggregation of Revenue [Line Items]
Revenue	533,725	485,393	0
Walden | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	533,725	485,393	0
Walden | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0
Medical and Veterinary
Disaggregation of Revenue [Line Items]
Revenue	346,067	338,913	335,434
Medical and Veterinary | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	334,323	328,382	332,159
Medical and Veterinary | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 11,744	$ 10,531	$ 3,275

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