Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Effective Income Tax Rate Reconciliation, Percent	23.70%	17.40%	31.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	28.10%	35.00%
Tax Cuts and Jobs Act, Incomplete Accounting, Undistributed Accumulated Earnings of Foreign Subsidiary, Provisional Unrecognized Deferred Tax Liability	$ 19.2
Accrual On Foreign Withholding Taxes		$ 28.3
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit		253.3
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit)		22.9
Long-Term deferred tax assets	64.0	68.9
Undistributed Earnings of Foreign Subsidiaries	278.6
Deferred Tax Assets, Operating Loss Carryforwards	54.0	44.6
Valuation Allowance	31.6	46.0
Income Taxes Paid	633.8	529.7	$ 817.1
Unrecognized Tax Benefits	54.2	45.2	74.6	$ 27.4
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	43.3	36.1	61.0
Unrecognized Tax Benefits, Interest on Income Taxes Expense	1.9	3.2	$ 3.0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	9.3	7.9
Unrecognized Tax Benefits, Income Tax Penalties Accrued	0.3	0.3
Tax Settlements Future Impact Potential On Earnings Maximum	3.0
Max Expected Cash Payment On Tax Settlements	$ 10.0
Tax Cuts and Jobs Act, Accounting Complete [true false]	0
Foreign Tax Authority [Member]
Deferred Tax Assets, Operating Loss Carryforwards	$ 54.1
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 1.9
Operating Loss Carryforwards, Expiration Date	Jun. 30, 2027
Operating loss carry forwards not subject to expiration	$ 52.2
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 70.3
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards, Expiration Date	Jun. 30, 2036
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Expiration Date	Jun. 30, 2038
Operating Loss Carryforwards	$ 372.0
Income Taxes Payable [Member]
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 4.3	$ 4.8