Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Sep. 28, 2021	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Income Taxes [Line Items]
Increase to net earnings from tax holidays and tax incentives program		$ 49.6	$ 40.5	$ 38.0
Increase to net earnings per diluted share from tax holidays and tax incentives program (in dollars per share)		$ 0.34	$ 0.27	$ 0.26
Undistributed earnings		$ 4,100.0
Australian Taxation Office
Income Taxes [Line Items]
Percentage of recognized tax benefit for uncertain tax position		50.00%
Domestic Tax Authority
Income Taxes [Line Items]
Operating loss carryforwards		$ 16.5
Domestic Tax Authority | Australian Taxation Office
Income Taxes [Line Items]
Net impact of settlement				$ 238.7	$ 238.7
Gross settlement	$ 381.7			381.7	381.7
Penalties and interest				48.1	48.1
Liability (refund) adjustment from settlement with taxing authority				143.0	143.0
Remitted final payment	284.8
Prior remittance payments	$ 96.9
Foreign Tax Authority
Income Taxes [Line Items]
Operating loss carryforwards		6.2
Foreign Tax Authority | Australian Taxation Office
Income Taxes [Line Items]
Other comprehensive income, foreign currency translation adjustment, tax				14.1	14.1
Tax credits and deductions				$ 4.1	$ 4.1
State and Local Jurisdiction
Income Taxes [Line Items]
Amount of deferred taxes that would have been recognized if the earnings has not been permanently reinvested		4.9
Valuation Allowance | Foreign Tax Authority
Income Taxes [Line Items]
Operating loss carryforwards		0.8
Capital loss		$ 8.6