Interim Financial Data by Segment - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 1,249.9	$ 1,224.8	$ 3,167.1	$ 3,151.0
Earnings (Loss) before Income Taxes	210.5	223.6	284.8	377.2
Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	980.2	1,005.9	2,398.4	2,488.7
Global Technology and Operations
Segment Reporting Information [Line Items]
Revenues	1,249.9	1,224.8	3,167.1	3,151.0
Operating Segments | Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	980.2	1,005.9	2,398.4	2,488.7
Earnings (Loss) before Income Taxes	159.2	192.9	204.3	288.5
Operating Segments | Global Technology and Operations
Segment Reporting Information [Line Items]
Revenues	305.5	247.8	860.3	733.2
Earnings (Loss) before Income Taxes	67.4	53.4	172.9	147.5
Other
Segment Reporting Information [Line Items]
Earnings (Loss) before Income Taxes	(17.8)	(25.2)	(107.1)	(76.3)
Foreign currency exchange
Segment Reporting Information [Line Items]
Revenues	(35.8)	(28.9)	(91.6)	(70.9)
Earnings (Loss) before Income Taxes	$ 1.6	$ 2.5	$ 14.6	$ 17.5