Leases - Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 157.8	$ 163.7
Short-term lease cost	1.3	6.1
Variable lease cost	7.6	6.7
Total operating lease cost	$ 166.7	$ 176.5