Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Effective Income Tax Rate Reconciliation, Percent	22.50%	23.70%	17.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	28.10%
Undistributed Earnings of Foreign Subsidiaries	$ 274.1
Deferred Tax Assets, Operating Loss Carryforwards	52.0	$ 54.0
Valuation Allowance	12.0	31.6
Income Taxes Paid	677.1	633.8	$ 529.7
Unrecognized Tax Benefits	62.3	54.2	45.2	$ 74.6
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	49.9	43.3	36.1
Unrecognized Tax Benefits, Interest on Income Taxes Expense	1.6	1.9	$ 3.2
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	8.8	9.3
Unrecognized Tax Benefits, Income Tax Penalties Accrued		0.3
Tax Settlements Future Impact Potential On Earnings Maximum	4.0
Unrecognized Tax Benefits, Income Tax Penalties Expense	0.3
Deferred Tax Assets, Net of Valuation Allowance	368.8	347.5
Other Assets [Member]
Long-term Deferred Tax Assets	38.8	64.0
Foreign Tax Authority [Member]
Deferred Tax Assets, Operating Loss Carryforwards	55.3
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	0.9
Operating loss carry forwards not subject to expiration	54.4
Domestic Tax Authority [Member]
Operating Loss Carryforwards	58.7
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	374.8
Income Taxes Payable [Member]
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 1.0	$ 4.3