v3.26.1
REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Disaggregation of Revenue [Line Items]      
Revenues $ 7,476.8 $ 6,889.1 $ 6,506.8
Distribution revenues      
Disaggregation of Revenue [Line Items]      
Revenues 2,250.6 2,062.0 1,999.0
Recurring revenues      
Disaggregation of Revenue [Line Items]      
Revenues 4,878.0 4,507.9 4,222.6
Event-driven revenues      
Disaggregation of Revenue [Line Items]      
Revenues 348.1 319.3 285.2
Investor Communication Solutions      
Disaggregation of Revenue [Line Items]      
Revenues 5,560.8 5,113.0 4,857.9
Investor Communication Solutions | Total ICS Recurring revenues      
Disaggregation of Revenue [Line Items]      
Revenues 2,962.1 2,731.8 2,573.6
Investor Communication Solutions | Regulatory      
Disaggregation of Revenue [Line Items]      
Revenues 1,434.9 1,280.6 1,195.6
Investor Communication Solutions | Data-driven fund solutions      
Disaggregation of Revenue [Line Items]      
Revenues 479.5 459.2 435.2
Investor Communication Solutions | Issuer      
Disaggregation of Revenue [Line Items]      
Revenues 294.8 273.2 259.8
Investor Communication Solutions | Customer communications      
Disaggregation of Revenue [Line Items]      
Revenues 752.8 718.8 683.1
Investor Communication Solutions | Total ICS Event-driven revenues      
Disaggregation of Revenue [Line Items]      
Revenues 348.1 319.3 285.2
Investor Communication Solutions | Equity and other      
Disaggregation of Revenue [Line Items]      
Revenues 143.5 115.5 151.0
Investor Communication Solutions | Mutual funds      
Disaggregation of Revenue [Line Items]      
Revenues 204.6 203.8 134.2
Investor Communication Solutions | Distribution revenues      
Disaggregation of Revenue [Line Items]      
Revenues 2,250.6 2,062.0 1,999.0
Global Technology and Operations | Total GTO Recurring revenues      
Disaggregation of Revenue [Line Items]      
Revenues 1,916.0 1,776.1 1,648.9
Global Technology and Operations | Capital markets      
Disaggregation of Revenue [Line Items]      
Revenues 1,184.2 1,115.3 1,049.2
Global Technology and Operations | Wealth and investment management      
Disaggregation of Revenue [Line Items]      
Revenues $ 731.8 $ 660.8 $ 599.7