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SEGMENT INFORMATION - Schedule of Segment Total Assets Relating to Segments (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Other current assets | $ 1,116.5 | $ 2,463.1
Non-current assets | 2,263.7 | 2,332.5
Total assets | 3,842.3 | 5,258.4
Operating Segments |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 462.1 | 462.8
Operating Segments | GPC |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 159.4 | 171.8
Operating Segments | H&G |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 85.6 | 90.7
Operating Segments | HPC |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | $ 217.1 | $ 200.3

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