Leases - Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease cost	$ 32.1	$ 36.7	$ 67.8	$ 72.5
Short-term lease cost	0.4	0.2	0.7	0.5
Variable lease cost	3.9	2.9	6.8	5.4
Total operating lease cost	$ 36.4	$ 39.8	$ 75.3	$ 78.4