v3.24.3
Share-Based Payments - Additional Information (Details) - $ / shares
shares in Millions
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Share-based Payment Arrangement, Option        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Fair value of awards     $ 8.12  
Omnibus Plans        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares authorized to issues under share-based payments       8.0
Restricted stock units, retention period 6 months      
Omnibus Plans | Performance-based Awards        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Fair value of awards $ 8.49 $ 12.04 $ 17.40  
Vesting period (in years) 3 years      
Omnibus Plans | Performance-based Awards | Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of earnings 0.00% 0.00% 0.00%  
Omnibus Plans | Performance-based Awards | Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of earnings 200.00% 200.00% 200.00%  
Omnibus Plans | Market Based Awards        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Fair value of awards $ 11.02 $ 15.54 $ 23.39  
Performance period (in years) 3 years 3 years 3 years  
Vesting period (in years) 3 years 3 years 3 years  
Omnibus Plans | Market Based Awards | Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of earnings 0.00% 0.00% 0.00%  
Omnibus Plans | Market Based Awards | Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Percentage of earnings 200.00% 200.00% 200.00%  
Omnibus Plans | Share-based Payment Arrangement, Option        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period (in years) 3 years      
Expiration period 10 years      
Omnibus Plans | Restricted Stock Awards        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period (in years) 3 years      
Omnibus Plans | Restricted Stock Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period (in years) 1 year