Employee Retirement Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
United States
Defined Benefit Plan Disclosure [Line Items]
Percentage of contribution by the company to the retirement plans	4.00%
Total contribution by the company to the employee retirement plans	$ 11.9	$ 9.6	$ 9.3
Australia
Defined Benefit Plan Disclosure [Line Items]
Percentage of contribution by the company to the retirement plans	10.00%
Total contribution by the company to the employee retirement plans	$ 11.8	10.7	9.5
Singapore
Defined Benefit Plan Disclosure [Line Items]
Percentage of contribution by the company to the retirement plans	17.00%
Total contribution by the company to the employee retirement plans	$ 3.1	$ 2.5	$ 2.9