Financial Data By Segment And Geographic Area - Financial Data by Geographic Area Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Revenues	$ 19,202.6	$ 18,012.2	$ 16,498.3
Assets	54,362.7	50,971.0	63,068.2
United States
Segment Reporting Information [Line Items]
Revenues	16,934.2	15,950.9	14,503.3
Assets	47,989.9	44,565.9	56,856.2
Europe
Segment Reporting Information [Line Items]
Revenues	1,451.4	1,309.2	1,304.2
Assets	2,800.8	2,602.2	2,452.9
Canada
Segment Reporting Information [Line Items]
Revenues	473.7	427.5	389.3
Assets	2,796.6	3,022.0	2,987.9
Other
Segment Reporting Information [Line Items]
Revenues	343.3	324.6	301.5
Assets	$ 775.4	$ 780.9	$ 771.2