Income Taxes - Schedule of Income Taxes Paid, Net of Cash Received (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Disclosure [Abstract]
U.S. Federal	$ 672.5
U.S. State	167.9
Foreign	166.3
Total income taxes paid	$ 1,006.7	$ 1,198.0	$ 1,185.2

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Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Amount, after income tax refund received, of cash paid to foreign tax jurisdiction for tax on income.

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Amount, after income tax refund received, of cash paid to state and local tax jurisdictions for tax on income.

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Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
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-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-23

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