Goodwill And Intangible Assets, Net - Components of Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Total - gross	$ 5,782.8	$ 5,227.3
Total - accumulated amortization	(4,179.8)	(3,891.3)
Intangible assets, net	1,603.0	1,336.0
Software and software licenses
Finite-Lived Intangible Assets [Line Items]
Total - gross	4,103.6	3,803.7
Total - accumulated amortization	(2,830.3)	(2,642.6)
Customer contracts and lists
Finite-Lived Intangible Assets [Line Items]
Total - gross	1,429.4	1,181.6
Total - accumulated amortization	(1,105.6)	(1,007.6)
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Total - gross	249.8	242.0
Total - accumulated amortization	$ (243.9)	$ (241.1)