Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Classification:
Long-term deferred tax assets (included in Other non-current assets)	$ 14.5	$ 9.8
Long-term deferred tax liabilities	(391.3)	(446.1)
Deferred tax assets:
Accrued expenses not currently deductible	8.2	8.7
Compensation and benefits not currently deductible	75.8	68.0
Net operating losses	26.3	29.8
Tax credits	11.5	13.1
Research and development expenses	90.6	0.0
Other	24.1	27.6
Total deferred tax assets	236.5	147.1
Less: Valuation allowances	(10.3)	(10.7)
Deferred tax assets, net	226.2	136.5
Deferred tax liabilities:
Goodwill and identifiable intangibles	215.9	248.0
Depreciation	14.5	21.5
Net deferred expenses	329.4	249.5
Unremitted earnings	11.5	14.7
Cross Currency Swap and Treasury-Locks	14.4	22.4
Other	17.3	16.7
Deferred tax liabilities	603.0	572.8
Net deferred tax liabilities	$ (376.8)	$ (436.3)