Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Income Tax Examination [Line Items]
Provision for income taxes from continuing operations, percent	23.10%	22.50%	22.70%
Undistributed earnings of foreign subsidiaries	$ 53.1
Deferred tax assets, operating loss carryforwards	37.5	$ 34.1
Valuation allowance	18.6	18.9
Income taxes paid	1,080.7	856.8	$ 973.7
Unrecognized tax benefits	116.9	98.1	99.9	$ 62.3
Unrecognized tax benefits that would impact effective tax rate	83.6	68.1	68.5
Unrecognized tax benefits, interest on income taxes expense	9.1	3.5	$ 10.8
Unrecognized tax benefits, income tax penalties expense		0.3
Unrecognized tax benefits, interest on income taxes accrued	30.0	21.9
Other Assets
Income Tax Examination [Line Items]
Long-term deferred tax assets	331.1	157.4
Foreign Tax Authority
Income Tax Examination [Line Items]
Deferred tax assets, operating loss carryforwards	78.1
Deferred tax assets, operating loss carryforwards, subject to expiration	1.3
Operating loss carry forwards not subject to expiration	76.8
Domestic Tax Authority
Income Tax Examination [Line Items]
Operating loss carryforwards	19.0
State and Local Jurisdiction
Income Tax Examination [Line Items]
Operating loss carryforwards	$ 173.3
Income Taxes Payable
Income Tax Examination [Line Items]
Unrecognized tax benefits, interest on income taxes accrued		$ 4.5