Interim Financial Data by Segment - Amortization of Acquired Intangibles and Purchased Intellectual Property by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Amortization of acquired intangibles and purchased intellectual property	$ 60.8	$ 31.9	$ 192.0	$ 96.8
Other
Segment Reporting Information [Line Items]
Amortization of acquired intangibles and purchased intellectual property	0.0	0.4	0.0	1.1
Foreign currency exchange
Segment Reporting Information [Line Items]
Amortization of acquired intangibles and purchased intellectual property	(2.6)	(0.3)	(4.5)	(2.0)
Investor Communication Solutions | Operating Segments
Segment Reporting Information [Line Items]
Amortization of acquired intangibles and purchased intellectual property	16.2	21.2	53.3	65.6
Global Technology and Operations | Operating Segments
Segment Reporting Information [Line Items]
Amortization of acquired intangibles and purchased intellectual property	$ 47.2	$ 10.7	$ 143.2	$ 32.1