Income Taxes - Schedule of Components of Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 17.4	$ 14.4	$ 39.4	$ 19.3
Effective tax rate	19.90%	20.00%	19.70%	15.20%
Excess tax benefits	$ 1.2	$ 0.5	$ 6.2	$ 7.2