Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Effective Income Tax Rate Reconciliation, Percent, Total	19.70%	12.40%	11.50%	16.10%
Income tax expense (benefit), discrete tax items	$ (1.8)	$ (5.7)	$ (16.6)	$ (8.9)
Share-based compensation excess tax benefit	1.9	0.4	13.6	9.5
Income tax expense (benefit), other immaterial discrete tax items, net		(4.7)		(4.5)
China
Income tax expense (benefit), discrete tax items	$ (0.1)	$ (0.6)	$ 3.0	$ 5.1