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EQUITY - Schedule of Valuation Assumptions (Details) - Options
12 Months Ended
Sep. 30, 2021
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected market price volatility 31.90%
Risk-free interest rate 0.70%
Expected dividend yield 1.80%
Expected life of stock options in years (in years) 6 years 21 days
Estimated weighted-average fair value per stock option $ 61.15