Financial Data by Segment - Schedule of Financial Data Segment Reporting Information (Detail) $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2016 USD ($) Segment	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of segments | Segment									2
Revenues	$ 974.5	$ 688.8	$ 638.9	$ 594.7	$ 929.6	$ 634.2	$ 574.6	$ 555.8	$ 2,897.0	$ 2,694.2	$ 2,558.0
Earnings (loss) before income taxes	270.3	$ 100.6	$ 70.2	$ 59.1	261.8	$ 89.0	$ 59.1	$ 57.1	468.9	438.9	395.5
Assets	2,879.8				2,368.1				2,879.8	2,368.1	2,192.1
Capital expenditures									57.7	48.4	43.2
Depreciation and amortization									52.6	49.3	46.8
Amortization of acquired intangibles									31.8	25.3	22.6
Amortization of other assets									26.6	29.7	28.0
Operating Segments | Investor Communication Solutions
Segment Reporting Information [Line Items]
Revenues									2,220.4	2,030.2	1,881.0
Earnings (loss) before income taxes									409.1	381.4	336.3
Assets	1,475.2				1,346.9				1,475.2	1,346.9	1,137.0
Capital expenditures									40.7	34.9	28.2
Depreciation and amortization									30.7	27.8	25.3
Amortization of acquired intangibles									26.7	20.2	17.8
Amortization of other assets									6.6	6.9	4.4
Operating Segments | Global Technology and Operations
Segment Reporting Information [Line Items]
Revenues									738.0	692.5	680.7
Earnings (loss) before income taxes									135.4	120.3	118.8
Assets	712.0				786.1				712.0	786.1	729.4
Capital expenditures									5.8	6.6	11.7
Depreciation and amortization									11.1	12.7	12.2
Amortization of acquired intangibles									5.1	5.1	4.8
Amortization of other assets									15.7	17.7	18.2
Other
Segment Reporting Information [Line Items]
Revenues									0.0	0.0	0.0
Earnings (loss) before income taxes									(79.0)	(73.5)	(75.3)
Assets	692.6				235.1				692.6	235.1	325.7
Capital expenditures									11.2	6.9	3.3
Depreciation and amortization									10.9	8.8	9.3
Amortization of acquired intangibles									0.0	0.0	0.0
Amortization of other assets									4.3	5.1	5.4
Foreign Currency Exchange
Segment Reporting Information [Line Items]
Revenues									(61.4)	(28.5)	(3.7)
Earnings (loss) before income taxes									3.4	10.7	15.7
Assets	$ 0.0				$ 0.0				0.0	0.0	0.0
Capital expenditures									0.0	0.0	0.0
Depreciation and amortization									0.0	0.0	0.0
Amortization of acquired intangibles									0.0	0.0	0.0
Amortization of other assets									$ 0.0	$ 0.0	$ 0.0