Leases - Right of Use Assets and Operating Lease Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023
Leases [Abstract]
Cash paid for operating lease liabilities	$ 30.5	$ 33.5
Operating lease ROU assets obtained in exchange for new operating lease liabilities	$ 26.9	$ 12.4
Weighted-average remaining lease term (in years)	5 years		6 years
Weighted-average discount rate	2.90%		2.70%
Current operating lease liability	$ 97.4		$ 95.5