Summary of Options Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options Outstanding at beginning of period	2,781,536
Options, Granted	472,525
Options, Exercised	(226,608)
Options, Canceled	(87,681)
Options Outstanding at end of period	2,939,772
Options Outstanding, Exercisable at end of period	1,794,603
Weighted Average Exercise Price at beginning of period	$ 35.18
Weighted Average Exercise Price, options Granted	$ 41.46
Weighted Average Exercise Price, options Exercised	$ 27.18
Weighted Average Exercise Price, options Canceled	$ 43.67
Weighted Average Exercise Price at end of period	$ 36.37
Weighted Average Exercise Price, Exercisable at end of period	$ 32.47
Weighted Average Remaining Contractual Life, Outstanding at end of period	5 years 10 months 2 days
Weighted Average Remaining Contractual Life, Exercisable at end of period	4 years 5 months 12 days
Aggregate Intrinsic Value, Outstanding at end of period	$ 8,339
Aggregate Intrinsic Value, Exercisable at end of period	$ 8,336