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Employee Retirement Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
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 | $ 12.7 | $ 11.9 | $ 9.6
Australia |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of contribution by the company to the retirement plans | 10.50% |  |
Total contribution by the company to the employee retirement plans | $ 13.0 | 11.8 | 10.7
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 | $ 3.6 | $ 3.1 | $ 2.5

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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