Income Taxes - Reconciliation of Beginning and Ending balance of Unrecognized Tax (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at beginning of the year	$ 126.9	$ 116.9	$ 98.1
Additions for tax positions	29.5	17.2	11.3
Additions for tax positions of prior periods	26.7	17.8	16.8
Reductions for tax positions of prior periods	(1.8)	(12.8)	(5.0)
Settlement with tax authorities	(0.1)	(9.0)	(1.8)
Expiration of the statute of limitations	(17.5)	(2.9)	(1.0)
Impact of foreign exchange rate fluctuations	(0.7)	(0.3)	(1.5)
Unrecognized tax benefit at end of year	$ 163.0	$ 126.9	$ 116.9

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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