EQUITY - Restricted Share-Based Awards, Additional Information (Details) - Restricted Stock Units (RSUs) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2020 |
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Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items] | |||
Compensation costs net yet recognized, restricted units, net | $ 10.0 | ||
Expected weighted average period for unrecognized compensation cost (in years) | 1 year 8 months 12 days | ||
Total fair value of share-based payment awards vested | $ 28.2 | $ 41.8 | $ 15.2 |