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POST EMPLOYMENT BENEFITS - Plan assets distribution (Details) | Sep. 30, 2024 | Sep. 30, 2023
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Plan assets distribution |  |
Plan assets distribution (in percent) | 100.00% | 100.00%
Cash |  |
Plan assets distribution |  |
Plan assets distribution (in percent) | 2.69% | 3.31%
Equity securities |  |
Plan assets distribution |  |
Plan assets distribution (in percent) | 3.47% | 2.35%
Debt securities |  |
Plan assets distribution |  |
Plan assets distribution (in percent) | 91.05% | 91.23%
Real estate mutual fund |  |
Plan assets distribution |  |
Plan assets distribution (in percent) | 1.10% | 1.20%
Other |  |
Plan assets distribution |  |
Plan assets distribution (in percent) | 1.69% | 1.91%

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