Goodwill and Intangible Assets, Net - Schedule of Intangible Assets at Cost and Accumulated Amortization (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Original Cost	$ 438.0	$ 379.4
Accumulated Amortization	(227.8)	(183.7)
Intangible Assets, net	210.3	195.7
Software licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	110.1	89.7
Accumulated Amortization	(76.7)	(63.3)
Intangible Assets, net	33.5	26.4
Acquired software technology [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	91.0	74.4
Accumulated Amortization	(52.1)	(42.9)
Intangible Assets, net	38.9	31.5
Customer contracts and lists [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	213.9	196.8
Accumulated Amortization	(86.3)	(65.9)
Intangible Assets, net	127.6	130.9
Other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Original Cost	23.0	18.5
Accumulated Amortization	(12.7)	(11.6)
Intangible Assets, net	$ 10.3	$ 6.9