Goodwill and Intangibles Assets, net - Components Of Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jun. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Total - gross	$ 3,814.9	$ 3,617.9
Total - accumulated amortization	(2,708.2)	(2,546.4)
Intangible assets, net	1,106.7	1,071.5
Software and software licenses
Finite-Lived Intangible Assets [Line Items]
Total - gross	2,673.9	2,519.3
Total - accumulated amortization	(1,880.0)	(1,762.3)
Customer contracts and lists
Finite-Lived Intangible Assets [Line Items]
Total - gross	901.9	860.7
Total - accumulated amortization	(606.6)	(566.4)
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Total - gross	239.1	237.9
Total - accumulated amortization	$ (221.6)	$ (217.7)