Interim Financial Data by Segment - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 1,533.7	$ 1,389.8	$ 3,986.2	$ 3,462.1
Earnings (Loss) before Income Taxes	223.3	216.9	353.4	359.8
Other
Segment Reporting Information [Line Items]
Earnings (Loss) before Income Taxes	(44.5)	(51.1)	(105.7)	(114.3)
Foreign currency exchange
Segment Reporting Information [Line Items]
Revenues	(9.1)	(3.4)	(14.6)	(18.3)
Earnings (Loss) before Income Taxes	(2.5)	(2.7)	(5.6)	(8.3)
Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	1,161.4	1,097.1	2,908.2	2,618.6
Investor Communication Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	1,161.4	1,097.1	2,908.2	2,618.6
Earnings (Loss) before Income Taxes	220.7	215.2	361.9	308.5
Global Technology and Operations | Operating Segments
Segment Reporting Information [Line Items]
Revenues	381.5	296.1	1,092.6	861.8
Earnings (Loss) before Income Taxes	$ 49.8	$ 55.4	$ 102.9	$ 173.9