The Company and Its Significant Accounting Policies - Accrued Rewards (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Sales and Marketing Expenses
Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Line Items]
Rewards and promotions expense	$ 173.9	$ 95.2	$ 4.5
Other Accruals and Current Liabilities
Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Line Items]
Accrued rewards and promotions liability	$ 55.4	$ 36.2