Interim Financial Data by Segment - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 1,259.6	$ 1,054.9	$ 2,452.5	$ 2,072.3
Earnings (Loss) before Income Taxes	51.9	69.4	130.1	143.0
Other
Segment Reporting Information [Line Items]
Earnings (Loss) before Income Taxes	(39.7)	(17.3)	(61.2)	(63.2)
Foreign currency exchange
Segment Reporting Information [Line Items]
Revenues	(4.3)	(6.4)	(5.5)	(14.9)
Earnings (Loss) before Income Taxes	(1.7)	(2.9)	(3.1)	(5.7)
Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	893.3	776.0	1,746.8	1,521.5
Investor Communication Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	893.3	776.0	1,746.8	1,521.5
Earnings (Loss) before Income Taxes	58.8	40.9	141.2	93.3
Global Technology and Operations
Segment Reporting Information [Line Items]
Revenues	1,259.6	1,054.9	2,452.5	2,072.3
Global Technology and Operations | Operating Segments
Segment Reporting Information [Line Items]
Revenues	370.6	285.3	711.2	565.7
Earnings (Loss) before Income Taxes	$ 34.4	$ 48.6	$ 53.1	$ 118.5