Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 1,283.3	$ 1,192.9
Distribution revenues
Disaggregation of Revenue [Line Items]
Revenues	414.8	367.0
Recurring revenues
Disaggregation of Revenue [Line Items]
Revenues	805.8	749.6
Event-driven revenues
Disaggregation of Revenue [Line Items]
Revenues	62.7	76.3
Investor Communication Solutions
Disaggregation of Revenue [Line Items]
Revenues	920.6	853.4
Investor Communication Solutions | Regulatory
Disaggregation of Revenue [Line Items]
Revenues	170.8	165.4
Investor Communication Solutions | Data-driven fund solutions
Disaggregation of Revenue [Line Items]
Revenues	92.5	83.2
Investor Communication Solutions | Issuer
Disaggregation of Revenue [Line Items]
Revenues	23.9	20.6
Investor Communication Solutions | Customer communications
Disaggregation of Revenue [Line Items]
Revenues	155.9	140.9
Investor Communication Solutions | Total ICS Recurring revenues
Disaggregation of Revenue [Line Items]
Revenues	443.1	410.2
Investor Communication Solutions | Equity and other
Disaggregation of Revenue [Line Items]
Revenues	29.5	27.6
Investor Communication Solutions | Mutual funds
Disaggregation of Revenue [Line Items]
Revenues	33.2	48.8
Investor Communication Solutions | Total ICS Event-driven revenues
Disaggregation of Revenue [Line Items]
Revenues	62.7	76.3
Investor Communication Solutions | Distribution revenues
Disaggregation of Revenue [Line Items]
Revenues	414.8	367.0
Global Technology and Operations
Disaggregation of Revenue [Line Items]
Revenues	1,283.3	1,192.9
Global Technology and Operations | Capital markets
Disaggregation of Revenue [Line Items]
Revenues	226.7	208.6
Global Technology and Operations | Wealth and investment management
Disaggregation of Revenue [Line Items]
Revenues	136.0	130.8
Global Technology and Operations | Total GTO Recurring revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 362.7	$ 339.4