Income Taxes (Reconciliation of U.S. Federal Statutory Rate To Effective Tax Rate) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Provision for taxes at U.S. statutory rate	$ 609.2	$ 885.9	$ 782.1
Provision for taxes at U.S. statutory rate, percent	28.10%	35.00%	35.00%
State taxes, net of federal tax benefit	$ 51.0	$ 52.2	$ 47.2
State taxes, net of federal tax benefit, percent	2.40%	2.10%	2.10%
U.S. tax on foreign income	$ 12.0	$ 66.1	$ 122.6
U.S. tax on foreign income, percent	0.50%	2.60%	5.50%
Utilization of foreign tax credits	$ (19.6)	$ (76.0)	$ (155.4)
Utilization of foreign tax credits, percent	(0.90%)	(3.00%)	(7.00%)
Section 199 - Qualified production activities	$ (31.9)	$ (33.2)	$ (31.9)
Section 199 - Qualified production activities, percent	(1.50%)	(1.30%)	(1.40%)
Section 199 - Qualified production activities and research tax credit refund claim - net of reserves	$ 0.0	$ (51.8)	$ 0.0
Section 199 - Qualified production activities and research tax credit refund claim - net of reserves, percent	(0.00%)	(2.10%)	(0.00%)
Income Tax Reconciliation Resolution Of Tax Matters	$ (33.3)	$ 0.0	$ 0.0
Effective Income Tax Rate Reconciliation Resolution Of Tax Matters	(1.60%)	0.00%	0.00%
Excess tax benefit - Stock-based compensation	$ (26.7)	$ (32.1)	$ 0.0
Excess tax benefit - Stock-based compensation, percent	(1.20%)	(1.30%)	(0.00%)
Other	$ (10.4)	$ (13.4)	$ (23.3)
Other, percent	(0.50%)	(0.50%)	(1.00%)
Provision for income taxes from continuing operations	$ 550.3	$ 797.7	$ 741.3
Effective Income Tax Rate, Continuing Operations	25.30%	31.50%	33.20%