Stockholders' Equity - Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unamortized stock-based compensation expense	$ 14.0
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 6 months
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (dollars per share)	$ 120.25	$ 202.79	$ 134.29
Fair value of shares vested	$ 197.3	$ 118.9	$ 40.0
Unamortized stock-based compensation expense	$ 412.1
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 10 months 24 days
Minimum | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting term	1 year
Maximum | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting term	4 years