Summary of Information with Respect to Share-Based Compensation Expense Included in Consolidated Statements of Income (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in pre-tax income	$ 15.9	$ 15.8	$ 18.7
Income tax benefit related to share-based compensation	(6.0)	(6.0)	(7.1)
Share-based compensation expense included in net income	9.9	9.8	11.6
Diluted earnings per share impact of share-based compensation expense	$ 0.18	$ 0.18	$ 0.20
Selling and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in pre-tax income	10.9	10.1	12.1
Research and Development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in pre-tax income	4.9	5.4	6.4
Cost of product sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense included in pre-tax income	$ 0.1	$ 0.3	$ 0.2