Quarterly report [Sections 13 or 15(d)]

Equity (Details)

v3.26.1
Equity (Details) - USD ($)
shares in Thousands, $ in Millions
1 Months Ended 6 Months Ended
May 07, 2026
Mar. 31, 2026
Mar. 31, 2025
Sep. 30, 2025
Stock-based compensation        
Stock repurchase programs, authorized amount       $ 400.0
Common shares repurchased (in shares)   1,800 4,100  
Common shares repurchased, value   $ 142.0 $ 309.5  
Excise tax (as a percent)   1.00%    
Amount remaining available for future stock repurchases   $ 140.2    
Subsequent Event        
Stock-based compensation        
Stock repurchase programs, authorized amount $ 400.0      
Common shares repurchased (in shares) 600      
Common shares repurchased, value $ 39.9      
Restricted Stock Units (RSUs)        
Stock-based compensation        
Shares issued (in shares)   334    
Restricted Stock Units (RSUs) | Employee        
Stock-based compensation        
Vesting period   3 years    
Restricted Stock Units (RSUs) | Member of Board of Directors        
Stock-based compensation        
Vesting period   1 year    
Restricted Stock Units (RSUs) | Minimum        
Stock-based compensation        
Vesting period   1 year    
Restricted Stock Units (RSUs) | Minimum | Employee        
Stock-based compensation        
Vesting period   3 years    
Restricted Stock Units (RSUs) | Maximum        
Stock-based compensation        
Vesting period   4 years    
Restricted Stock Units (RSUs) | Maximum | Employee        
Stock-based compensation        
Vesting period   4 years    
Performance Shares        
Stock-based compensation        
Vesting period   3 years    
Shares issued (in shares)   146    
Performance Shares | Minimum        
Stock-based compensation        
Vesting rights (as a percent)   0.00%    
Performance Shares | Maximum        
Stock-based compensation        
Vesting rights (as a percent)   200.00%