Goodwill and Intangibles Assets, net - Components Of Finite-Lived Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jun. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Total - gross	$ 3,756.9	$ 3,617.9
Total - accumulated amortization	(2,654.4)	(2,546.4)
Intangible assets, net	1,102.5	1,071.5
Software and software licenses
Finite-Lived Intangible Assets [Line Items]
Total - gross	2,617.6	2,519.3
Total - accumulated amortization	(1,840.3)	(1,762.3)
Customer contracts and lists
Finite-Lived Intangible Assets [Line Items]
Total - gross	900.4	860.7
Total - accumulated amortization	(593.8)	(566.4)
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Total - gross	238.9	237.9
Total - accumulated amortization	$ (220.3)	$ (217.7)