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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Stock-Based Compensation (Additional Textual) [Abstract]
Maximum period of achievement of performance goals to earn performance units	3 years
International Plans [Member]
Stock-Based Compensation (Textual) [Abstract]
Rate of Future Salary Increase	1.50%	1.50%
Minimum [Member] | International Plans [Member]
Stock-Based Compensation (Textual) [Abstract]
Rate of Future Salary Increase	300.00%		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	$ 0.7		$ 1.3
Cash received from the exercise of capital stock option	6.6	$ 0.9	4.8
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	0.6		0.5
Total Intrinsic value of options exercised	2.4	0.3	2.4
Restricted Stock Units - Time Vesting Performance Vesting [Member]
Stock-Based Compensation (Textual) [Abstract]
Compensation expense related to stock option	23.9	$ 15.3	$ 21.9
Unrecognized compensation cost	$ 22.7
Unrecognized compensation costs, weighted average period	1 year 9 months 18 days
Performance Shares [Member]
Stock-Based Compensation (Textual) [Abstract]
Performance metric adjustments, net	(100,000)

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

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