Definite Lived Long-Lived Assets - Other Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Intangibles [Line Items]
Gross Carrying Value	$ 630.2	$ 609.5
Accumulated Amortization	(357.1)	(315.5)
Net Carrying Value	$ 273.1	$ 294.0
Core technology [Member]
Intangibles [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	18 years	18 years
Gross Carrying Value	$ 170.3	$ 170.6
Accumulated Amortization	(74.8)	(64.9)
Net Carrying Value	$ 95.5	$ 105.7
Customer relationships [Member]
Intangibles [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	14 years	14 years
Gross Carrying Value	$ 253.0	$ 230.3
Accumulated Amortization	(106.1)	(90.9)
Net Carrying Value	$ 146.9	$ 139.4
Product relationships [Member]
Intangibles [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years	12 years
Gross Carrying Value	$ 206.9	$ 208.6
Accumulated Amortization	(176.2)	(159.7)
Net Carrying Value	$ 30.7	$ 48.9