Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Current deferred tax assets		$ 0.0
Long-Term deferred tax assets	$ 93.4	100.3
Deferred Tax Liabilities, Net, Current		0.0
Undistributed Earnings of Foreign Subsidiaries	469.5
Deferred Tax Assets, Operating Loss Carryforwards	49.5	46.0
Valuation Allowance	9.4	15.4
Income Taxes Paid	817.1	651.6	$ 773.3
Unrecognized Tax Benefits	74.6	27.4	27.1	$ 56.5
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	61.0	18.7	16.9
Unrecognized Tax Benefits, Interest on Income Taxes Expense	3.0	1.1	$ (2.7)
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	6.9	4.0
Unrecognized Tax Benefits, Income Tax Penalties Accrued	0.2	0.2
Tax Settlements Future Impact Potential On Earnings Maximum	35.0
Foreign Tax Authority [Member]
Deferred Tax Assets, Operating Loss Carryforwards	71.7
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	17.3
Operating loss carry forwards not subject to expiration	$ 54.4
Operating Loss Carryforwards, Expiration Date	Jun. 30, 2025
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 35.4
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Expiration Date	Jun. 30, 2031
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 271.4
Operating Loss Carryforwards, Expiration Date	Jun. 30, 2036
Income Taxes Payable [Member]
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 0.1	$ 0.1