Income Taxes - Schedule of Income Before Income Taxes for the Company's Domestic and Foreign Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Domestic	$ 224.1	$ 51.2	$ (74.0)
Foreign	(12.5)	21.3	10.9
Income (loss) before income taxes	$ 211.6	$ 72.5	$ (63.1)