Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Stock-Based Compensation (Textual) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Other	37,378
International Plans [Member]
Stock-Based Compensation (Textual) [Abstract]
Rate of Future Salary Increase	300.00%	1.80%	1.50%
Minimum [Member] \| International Plans [Member]
Stock-Based Compensation (Textual) [Abstract]
Rate of Future Salary Increase	1.80%
Stock Option [Member]
Stock-Based Compensation (Textual) [Abstract]
Tax benefits resulting from stock-based compensation deductions in excess of amounts reported for financial reporting purposes	$ 1.5	$ 0.8	$ 0.2
Cash received from the exercise of capital stock option	0.0	0.0	0.2
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	0.0
Total Intrinsic value of options exercised	0.0	0.0	0.1
Share-Based Payment Arrangement, Expense, Tax Benefit	(1.5)	(0.8)	(0.2)
Restricted Stock Units - Time Vesting Performance Vesting [Member]
Stock-Based Compensation (Textual) [Abstract]
Compensation expense related to stock option	23.4	$ 23.3	$ 20.1
Unrecognized compensation cost	$ 21.5
Unrecognized compensation costs, weighted average period	1 year 7 months 6 days
Performance Shares [Member]
Stock-Based Compensation (Textual) [Abstract]
Performance metric adjustments, net	(37,378)

Stock based compensation.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Number of shares under non-option equity instrument agreements for which rights to exercise lapsed.

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Other increase (decrease) in number of shares reserved for issuance under non-option equity instrument agreements that is not separately disclosed.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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