Revenue (Disaggregate revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 511,534	$ 462,288
Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	508,860	460,098
Other
Disaggregation of Revenue [Line Items]
Revenue	2,674	2,190
Chamberlain
Disaggregation of Revenue [Line Items]
Revenue	192,400	179,201
Chamberlain | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	192,400	179,201
Chamberlain | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0
Walden
Disaggregation of Revenue [Line Items]
Revenue	216,673	189,960
Walden | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	216,673	189,960
Walden | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0
Medical and Veterinary
Disaggregation of Revenue [Line Items]
Revenue	102,461	93,127
Medical and Veterinary | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	99,787	90,937
Medical and Veterinary | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 2,674	$ 2,190