Fair Value Measurements (Details) $ in Thousands					3 Months Ended		9 Months Ended
	Jul. 29, 2021 USD ($)	Jul. 31, 2019 USD ($)	Dec. 11, 2018 USD ($)	Dec. 11, 2018 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan payment received							$ 10,000	$ 0
Long-term debt, gross					$ 1,253,333	$ 1,091,750	1,253,333	1,091,750	$ 1,091,000
Assets measured at fair value using Level 3					0	0	0	0	0
Liabilities measured at fair value using Level 3					0	0	0	0	0
Accounts Receivable | Credit extension program
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure					29,100	29,400	29,100	29,400	29,200
Nonqualified Deferred Compensation Plan [Member] | Accrued Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Liability, Current, Fair Value Disclosure					20,000	19,300	20,000	19,300	20,300
Nonqualified Deferred Compensation Plan [Member] | Prepaid Expenses and Other Current Assets | Investment in Rabbi Trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Plan Assets, Fair Value Disclosure					20,200	$ 10,900	$ 20,200	$ 10,900	$ 20,600
DeVry University [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan payment received					$ 10,000
Receivable with Imputed Interest, Face Amount			$ 10,000	$ 10,000
Receivable with Imputed Interest, Effective Yield (Interest Rate)			4.00%	4.00%
Receivable with Imputed Interest, Due Date			Jan. 01, 2022	Jan. 01, 2022
DeVry University [Member] | Discount rate | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Measurement Input						0.04		0.04	0.04
DeVry University [Member] | Prepaid Expenses and Other Current Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure						$ 10,000		$ 10,000	$ 10,000
Chicago, Illinois Campus [Member] | Discontinued Operations, Disposed of by Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Receivable with Imputed Interest, Face Amount		$ 46,800
Receivable with Imputed Interest, Effective Yield (Interest Rate)		4.00%
Receivable with Imputed Interest, Due Date		Jul. 31, 2024
Chicago, Illinois Campus [Member] | Discount rate | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Measurement Input					0.07	0.07	0.07	0.07	0.07
Chicago, Illinois Campus [Member] | Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure					$ 43,600	$ 42,400	$ 43,600	$ 42,400	$ 42,700
Chicago, Illinois Campus [Member] | Other Noncurrent Assets | Discontinued Operations, Disposed of by Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure					43,600	42,400	43,600	42,400	42,700
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax					$ 0	0	$ (4,525)	0
Interest Rate Swap | Interest Expense [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ (4,500)
Interest Rate Swap | Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability						$ 9,500		$ 9,500	$ 8,900