Interim Financial Data by Segment - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) Segment	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment			2
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
Global Technology and Operations
Segment Reporting Information [Line Items]
Revenues	1,249.9	1,224.8	3,167.1	3,151.0
Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues	980.2	1,005.9	2,398.4	2,488.7
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
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 \| Restatement adjustment \| Global Technology and Operations
Segment Reporting Information [Line Items]
Revenues		11.2		32.3
Earnings (Loss) before Income Taxes		0.9		1.3
Operating Segments \| Restatement adjustment \| Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues		(11.2)		(32.3)
Earnings (Loss) before Income Taxes		$ (0.9)		$ (1.3)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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