The Company and Its Significant Accounting Policies - Accrued Rewards (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Accounting Policies [Abstract] | |||
| Accrued rewards and promotions liability | $ 96.5 | $ 87.6 | |
| Rewards and promotions expense | $ 347.6 | $ 272.0 | $ 219.8 |