Operating Leases (Lease Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 61.0	$ 65.7
Variable lease cost	0.9	3.0
Short term lease cost	0.3	0.3
Sublease income	(10.9)	(11.2)
Total lease cost	$ 51.3	$ 57.8