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The Company and Significant Accounting Policies - Government Grants (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |
Government Grants, Reduction Recorded To Property, Plant And Equipment and Operating Expenses | $ 0.4 | $ 0.0 | $ 0.8 | $ 0.6
Government Grants, Reduction Recorded To Operating Expenses |  | $ 0.0 |  | $ 0.1

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