Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Narrative (Details)

v3.21.1
Share-Based Compensation - Narrative (Details)
6 Months Ended
Mar. 31, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award performance measurement period 3 years
Time-based stock awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Equity instruments other than options, grant date fair value (in dollars per share) $ 38.03
Performance-based stock awards (maximum that can be earned)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Equity instruments other than options, grant date fair value (in dollars per share) $ 44.39
Performance-based stock awards granted, number of units (in shares) | shares 214,092