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Accounts Receivable and Credit Losses (Additional Information) (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 31, 2019 | Dec. 11, 2018 | Dec. 11, 2018 | Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Financing Receivables [Line Items] |  |  |  |  |  |  |
Financing Receivable Allowance For Credit Losses |  |  |  | $ 17,064 | $ 16,815 | $ 16,832 | $ 15,690
Minimum |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Receivable with Imputed Interest, Effective Yield (Interest Rate) |  |  |  | 3.00% |  |  |
Maximum |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Receivable with Imputed Interest, Effective Yield (Interest Rate) |  |  |  | 12.00% |  |  |
DeVry University [Member] |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Financing Receivable Allowance For Credit Losses |  |  |  | $ 0 |  |  |
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 |  |  |  |
Future Cash Flows Discounting Rate |  |  |  | 4.00% |  |  |
DeVry University [Member] | Other Assets |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Loan Receivable |  |  |  |  | 10,000 |  |
DeVry University [Member] | Prepaid Expenses and Other Current Assets |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Loan Receivable |  |  |  | $ 10,000 |  | 10,000 |
Chicago, Illinois Campus [Member] | Other Noncurrent Assets |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Loan Receivable |  |  |  | 43,000 | 41,700 | 42,700 |
Chicago, Illinois Campus [Member] | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Financing Receivables [Line Items] |  |  |  |  |  |  |
Financing Receivable Allowance For Credit Losses |  |  |  | 0 |  |  |
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 |  |  |  |  |  |
Loan Receivable |  |  |  | $ 43,000 | $ 41,700 | $ 42,700 |
Future Cash Flows Discounting Rate |  |  |  | 7.00% | 7.00% | 7.00% |

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