Financial Data By Segment And Geographic Area - Revenues and Assets by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Revenues	$ 20,560.9	$ 19,202.6	$ 18,012.2
Assets	53,369.3	54,362.7	50,971.0
United States
Segment Reporting Information [Line Items]
Revenues	18,179.2	16,934.2	15,950.9
Assets	46,763.0	47,989.9	44,565.9
Europe
Segment Reporting Information [Line Items]
Revenues	1,533.5	1,451.4	1,309.2
Assets	3,025.5	2,800.8	2,602.2
Canada
Segment Reporting Information [Line Items]
Revenues	489.3	473.7	427.5
Assets	2,750.7	2,796.6	3,022.0
Other
Segment Reporting Information [Line Items]
Revenues	358.9	343.3	324.6
Assets	$ 830.1	$ 775.4	$ 780.9