v3.22.2.2
EQUITY - Share-Based Awards, Additional Information (Details) - USD ($)
shares in Millions, $ in Millions
2 Months Ended 12 Months Ended
Nov. 22, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items]        
Common share available for issue under share-based plan (in shares)   5.0    
Common shares were available to underlie the grant of new share-based award (in shares)   3.4    
Tax benefit realized from tax deduction associated with exercise of stock options and vesting of restricted share awards   $ 14.8 $ 18.3 $ 5.8
Treasury Shares        
Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items]        
Treasury shares reissued (in shares)   1.5 0.5 0.4
Share-Based Compensation Awards and Employee Stock Purchase Plan | Treasury Shares        
Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items]        
Treasury shares reissued (in shares)   0.9 0.4 0.4
Restricted Stock Units, Performance Shares, And Stock Options | Subsequent Event        
Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items]        
Options and equity instruments other than options, grants in period (in shares) 1.6      
Options and equity instruments other than options, grants in period, fair value $ 51.8