Other Expense/(Income), Net (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Impairment of Intangible Assets, Finite-lived	$ 12.1	$ 0.0	$ 0.0
Restructuring Charges, Net of Reversals	23.9	(20.5)	(90.0)
Interest income on corporate funds	(97.6)	(83.5)	(76.7)
Realized gains on available-for-sale securities	(1.8)	(2.0)	(5.3)
Realized losses on available-for-sale securities	2.7	4.5	3.1
Gain on sale of assets	0.0	0.0	(205.4)
Gain on sale of business		(0.7)	0.0
Gain on Sale of Investments	(15.7)	0.0	0.0
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(6.7)	253.8	(58.9)
Other (income)/expense, net	(111.1)	172.1	(343.2)
Gain on Sale of Building [Member]
Restructuring Charges, Net of Reversals	(4.1)	$ 0.0	$ 0.0
Non-Cash Settlement [Member]
Non-service components of pension expense, net	48.2
Other Components [Member]
Non-Service Component, Net Of Net Periodic Pension Expense	$ (54.9)