v3.26.1
ACQUISITIONS - Additional Information (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Nov. 01, 2024
Apr. 30, 2026
Jan. 31, 2026
Sep. 30, 2025
Aug. 31, 2025
May 31, 2024
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Business Combination [Line Items]                  
Acquisitions, net of cash acquired             $ 282.7 $ 193.5 $ 34.3
Contingent consideration obligations             59.9 14.0  
Goodwill             3,787.8 3,609.6  
CQG, Inc.                  
Business Combination [Line Items]                  
Consideration transferred   $ 173.0              
Acquisitions, net of cash acquired   161.7              
Deferred payments   12.0              
Contingent consideration maximum potential pay out   50.0              
Net tangible liabilities assumed   1.5              
Contingent consideration obligations   28.0              
Goodwill   77.7              
Intangible assets   $ 125.5              
CQG, Inc. | Customer Relationships                  
Business Combination [Line Items]                  
Weighted average useful life   7 years              
CQG, Inc. | Software Technology                  
Business Combination [Line Items]                  
Weighted average useful life   5 years              
Acolin Group Holdco Limited                  
Business Combination [Line Items]                  
Consideration transferred     $ 70.2            
Acquisitions, net of cash acquired     65.4            
Deferred payments     2.4            
Net tangible liabilities assumed     10.7            
Contingent consideration obligations     16.9            
Goodwill     73.9            
Intangible assets     $ 21.4            
Acolin Group Holdco Limited | Customer Relationships                  
Business Combination [Line Items]                  
Weighted average useful life     7 years            
Acolin Group Holdco Limited | Software Technology                  
Business Combination [Line Items]                  
Weighted average useful life     5 years            
LDI-MAP, LLC                  
Business Combination [Line Items]                  
Consideration transferred       $ 31.9          
Acquisitions, net of cash acquired       31.9          
Deferred payments       3.5          
Contingent consideration obligations       8.5          
Goodwill       24.1          
Intangible assets       19.7          
Net tangible liabilities assumed       $ 0.1          
LDI-MAP, LLC | Customer Relationships                  
Business Combination [Line Items]                  
Weighted average useful life       7 years          
LDI-MAP, LLC | Software Technology                  
Business Combination [Line Items]                  
Weighted average useful life       5 years          
Signal Agency Limited                  
Business Combination [Line Items]                  
Consideration transferred         $ 25.0        
Acquisitions, net of cash acquired         23.9        
Deferred payments         2.7        
Net tangible liabilities assumed         3.4        
Goodwill         19.9        
Intangible assets         $ 10.1        
Signal Agency Limited | Customer Relationships                  
Business Combination [Line Items]                  
Weighted average useful life         5 years        
Signal Agency Limited | Software Technology                  
Business Combination [Line Items]                  
Weighted average useful life         5 years        
SIS                  
Business Combination [Line Items]                  
Acquisitions, net of cash acquired $ 185.5                
Net tangible liabilities assumed 1.9                
Goodwill 38.3             38.3  
Intangible assets $ 149.1                
Weighted average useful life 10 years                
Aggregate purchase price $ 185.5                
2025 Immaterial Acquisition                  
Business Combination [Line Items]                  
Consideration transferred               9.9  
Aggregate purchase price               $ 8.0  
AdvisorTarget                  
Business Combination [Line Items]                  
Consideration transferred           $ 34.7      
Acquisitions, net of cash acquired           34.3      
Contingent consideration maximum potential pay out             $ 24.0    
Goodwill           38.6      
Intangible assets           $ 12.1      
Weighted average useful life           5 years      
Net tangible liabilities assumed           $ 0.8      
Deferred payments           0.2      
Settlement of preexisting relationship           1.6      
Acquisition date fair value of contingent consideration liability           $ 14.0