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RELATED-PARTY TRANSACTIONS (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 1994
ECIL-Rapiscan Security Products Limited |  |  |  |
Sales to joint venture | $ 10.4 | $ 6.9 | $ 2.3 |
ECIL-Rapiscan Security Products Limited |  |  |  |
Ownership interest in joint venture (as a percent) |  |  |  | 36.00%
Initial investment |  |  |  | $ 0.1
Receivables from joint venture | 1.4 | 1.9 |  |
ECIL-Rapiscan Security Products Limited | Chairman and Chief Executive Officer |  |  |  |
Related party ownership percentage in equity method investee of the reporting entity |  |  |  | 10.50%
ECIL-Rapiscan Security Products Limited | Executive Officer |  |  |  |
Related party ownership percentage in equity method investee of the reporting entity |  |  |  | 4.50%
Maximum | ECIL-Rapiscan Security Products Limited |  |  |  |
Equity earnings in joint venture | $ 0.1 | $ 0.1 | $ 0.1 |
Maximum | ECIL-Rapiscan Security Products Limited | Management |  |  |  |
Collective voting power control, by entity and related parties, in equity method investment of entity (as a percent) | 50.00% |  |  |

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