Interim Financial Data by Segment - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 1,292.9	$ 1,259.6	$ 2,576.2	$ 2,452.5
Earnings (Loss) before Income Taxes	71.9	51.9	127.3	130.1
Other
Segment Reporting Information [Line Items]
Earnings (Loss) before Income Taxes	(37.0)	(40.8)	(81.9)	(63.5)
Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	919.4	892.7	1,840.0	1,746.1
Investor Communication Solutions | Operating Segments
Segment Reporting Information [Line Items]
Revenues	919.4	892.7	1,840.0	1,746.1
Earnings (Loss) before Income Taxes	64.9	58.7	124.9	141.2
Global Technology and Operations | Operating Segments
Segment Reporting Information [Line Items]
Revenues	373.5	366.9	736.2	706.4
Earnings (Loss) before Income Taxes	$ 44.0	$ 33.9	$ 84.3	$ 52.5