Summary of Significant Accounting Policies - Capitalized Software-as-a-Service Costs (Details) - Capitalized computer software as service - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Jun. 30, 2026 |
|
| Property and equipment, net | |||
| Capitalized software written down | $ 0.0 | $ 0.0 | |
| Instructional costs and services | |||
| Property and equipment, net | |||
| Amortization expense | 2.3 | 2.3 | |
| Selling, general and administrative expenses | |||
| Property and equipment, net | |||
| Amortization expense | 3.1 | $ 4.4 | |
| Prepaid expenses | |||
| Property and equipment, net | |||
| Capitalized software, net | 16.9 | $ 18.0 | |
| Deposits and other assets | |||
| Property and equipment, net | |||
| Capitalized software, net | $ 28.1 | $ 28.1 | |
| Minimum | |||
| Property and equipment, net | |||
| Capitalized software as service useful life | 3 years | ||
| Maximum | |||
| Property and equipment, net | |||
| Capitalized software as service useful life | 5 years | ||