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Revenue (Disaggregate revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 447,729	$ 393,242	$ 865,129	$ 762,087
Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	445,313	389,799	859,743	755,160
Other
Disaggregation of Revenue [Line Items]
Revenue	2,416	3,443	5,386	6,927
Chamberlain
Disaggregation of Revenue [Line Items]
Revenue	180,986	153,553	348,916	296,149
Chamberlain | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	180,986	153,553	348,916	296,149
Chamberlain | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Walden
Disaggregation of Revenue [Line Items]
Revenue	171,306	146,808	332,819	288,416
Walden | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	171,306	146,808	332,819	288,416
Walden | Other
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Medical and Veterinary
Disaggregation of Revenue [Line Items]
Revenue	95,437	92,881	183,394	177,522
Medical and Veterinary | Tuition and fees
Disaggregation of Revenue [Line Items]
Revenue	93,021	89,438	178,008	170,595
Medical and Veterinary | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 2,416	$ 3,443	$ 5,386	$ 6,927

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