Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 33.6	$ 35.3	$ 35.5
Operating lease commitments not yet commenced	57.3
Operating lease revenue	$ 88.6	$ 90.1	$ 93.4
Minimum
Lessee, Lease, Description [Line Items]
Lease terms	1 year
Lease terms, not yet commenced	10 years
Maximum
Lessee, Lease, Description [Line Items]
Lease terms	13 years
Lease terms, not yet commenced	15 years