Leases - Right of Use Assets and Operating Lease Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Leases [Abstract]
Cash paid for operating lease liabilities	$ 65.3	$ 64.5
Operating lease ROU assets obtained in exchange for new operating lease liabilities	$ 18.7	$ 61.1
Weighted-average remaining lease term (in years)	6 years		6 years
Weighted-average discount rate	2.30%		2.20%
Current operating lease liability	$ 94.7		$ 95.1