Shareholders' Equity and Share-Based Compensation - Summary of Stock Option Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Mar. 21, 2008	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding at June 30, 2012, Shares		2,410,718
Granted, Shares	330,470	533,724
Exercised, Shares		(608,415)
Forfeited or expired, Shares		(211,995)
Outstanding at June 30, 2013, Shares		2,124,032
Exercisable at June 30, 2013, Shares		1,198,833
Outstanding at June 30, 2012, Weighted Average Exercise Price Per Share		$ 54.71
Granted, Weighted Average Exercise Price Per Share		$ 47.15
Exercised, Weighted Average Exercise Price Per Share		$ 33.39
Forfeited or expired, Weighted Average Exercise Price Per Share		$ 67.22
Outstanding at June 30, 2013, Weighted Average Exercise Price Per Share		$ 57.67
Exercisable at June 30, 2013, Weighted Average Exercise Price Per Share		$ 69.96
Outstanding at June 30, 2012, Weighted Average Remaining Contractual Term (Years)		6 years 5 months 1 day
Outstanding at June 30, 2013, Weighted Average Remaining Contractual Term (Years)		6 years 3 months 15 days
Exercisable at June 30, 2013, Weighted Average Remaining Contractual Term (Years)		4 years 5 months 19 days
Outstanding at June 30, 2012, Average Intrinsic Value		$ 9,359
Outstanding at June 30, 2013, Average Intrinsic Value		21,077
Exercisable at June 30, 2013, Average Intrinsic Value		$ 9,552