v3.26.1
Acquisitions - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 23, 2026
Oct. 31, 2025
Oct. 17, 2025
Oct. 07, 2025
Apr. 14, 2025
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2026
Sep. 30, 2025
Business Combination [Line Items]                  
Goodwill               $ 301.8 $ 298.3
WCS International Limited                  
Business Combination [Line Items]                  
Cash consideration paid $ 8.6                
Deferred consideration 4.2                
Goodwill $ 8.0                
Intercam Advisors, Inc. and Intercam Securities, Inc.                  
Business Combination [Line Items]                  
Cash consideration paid     $ 1.7            
Deferred consideration     0.8            
Goodwill     $ 0.4            
Plantureux                  
Business Combination [Line Items]                  
Cash consideration paid   $ 2.8              
Deferred consideration   1.2              
Goodwill   $ 2.9              
GEA                  
Business Combination [Line Items]                  
Cash consideration paid       $ 5.2          
Deferred consideration       16.5          
Total fair value of intangible assets acquired       $ 21.7          
R.J. O’Brien                  
Business Combination [Line Items]                  
Cash consideration paid         $ 651.9        
Goodwill         166.6        
Total fair value of intangible assets acquired         $ 410.6        
Percentage of stock purchased         100.00%        
Net income (loss)           $ 74.0 $ 247.9