Interim Financial Data by Segment - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenues	$ 1,017.4	$ 948.6
Earnings (Loss) before Income Taxes	73.6	63.8
Other
Segment Reporting Information [Line Items]
Earnings (Loss) before Income Taxes	(60.5)	(21.1)
Foreign currency exchange
Segment Reporting Information [Line Items]
Revenues	(31.5)	(28.0)
Earnings (Loss) before Income Taxes	6.0	5.6
Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	752.9	702.6
Investor Communication Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	752.9	702.6
Earnings (Loss) before Income Taxes	52.8	23.0
Global Technology and Operations | Operating Segments
Segment Reporting Information [Line Items]
Revenues	296.0	273.9
Earnings (Loss) before Income Taxes	$ 75.3	$ 56.4