Leases - Right of Use Assets and Operating Lease Liabilities (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2024
Leases [Abstract]
Cash paid for operating lease liabilities	$ 95.4	$ 95.6
Operating lease ROU assets obtained in exchange for new operating lease liabilities	$ 44.5	$ 54.2
Weighted-average remaining lease term (in years)	5 years		5 years
Weighted-average discount rate	3.40%		3.30%
Current operating lease liability	$ 100.3		$ 92.2