v3.26.1
GOODWILL AND INTANGIBLE ASSETS, NET - Schedule of Changes in Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Goodwill [Roll Forward]      
Goodwill, gross   $ 3,609.6 $ 3,469.4
Additions $ 195.6 44.5  
Foreign currency translation and other (17.4) 98.9  
Fair value adjustments 0.0 (3.2)  
Accumulated impairment losses 0.0 0.0  
Goodwill, net 3,787.8 3,609.6  
Investor Communication Solutions      
Goodwill [Roll Forward]      
Goodwill, gross   1,090.7 1,084.3
Additions 117.9 6.2  
Foreign currency translation and other (2.7) 3.4  
Fair value adjustments 0.0 (3.2)  
Accumulated impairment losses 0.0 0.0  
Goodwill, net 1,205.9 1,090.7  
Global Technology and Operations      
Goodwill [Roll Forward]      
Goodwill, gross   2,518.9 $ 2,385.1
Additions 77.7 38.3  
Foreign currency translation and other (14.6) 95.5  
Fair value adjustments 0.0 0.0  
Accumulated impairment losses 0.0 0.0  
Goodwill, net $ 2,581.9 $ 2,518.9