Financial Data by Segment - Schedule of Revenues and Assets by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 6,060.9	$ 5,709.1	$ 4,993.7
Assets	8,233.2	8,168.8	8,119.8
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5,260.0	4,880.1	4,370.4
Assets	5,514.3	5,282.3	4,885.2
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	367.4	398.1	360.1
Assets	448.4	495.4	549.0
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	392.2	386.0	243.5
Assets	2,024.3	2,152.1	2,430.6
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	41.3	44.8	19.7
Assets	$ 246.2	$ 239.0	$ 255.0