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Share-Based Compensation - Summary of Stock Option Activity (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
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9 Months Ended |
12 Months Ended |
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Mar. 31, 2015
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Jun. 30, 2014
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
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| Outstanding at June 30, 2014, Shares |
1,419,598 |
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| Granted, Shares |
6,459 |
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| Exercised, Shares |
(414,623) |
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| Forfeited or expired, Shares |
(81,641) |
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| Outstanding at March 31, 2015, Shares |
929,793 |
1,419,598 |
| Exercisable at March 31, 2015, Shares |
538,689 |
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| Outstanding at June 30, 2014, Weighted Average Exercise Price Per Share |
$ 65.90 |
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| Granted, Weighted Average Exercise Price Per Share |
$ 120.31 |
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| Exercised, Weighted Average Exercise Price Per Share |
$ 57.08 |
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| Forfeited or expired, Weighted Average Exercise Price Per Share |
$ 75.44 |
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| Outstanding at March 31, 2015, Weighted Average Exercise Price Per Share |
$ 69.38 |
$ 65.90 |
| Exercisable at March 31, 2015, Weighted Average Exercise Price Per Share |
$ 75.64 |
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| Outstanding, Weighted Average Remaining Contractual Term (Years) |
5 years 9 months 26 days |
6 years 8 months 12 days |
| Exercisable at March 31, 2015, Weighted Average Remaining Contractual Term (Years) |
4 years 2 months 9 days |
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| Outstanding at June 30, 2014, Aggregate Intrinsic Value |
$ 62,204 |
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| Outstanding at March 31, 2015, Aggregate Intrinsic Value |
59,752 |
62,204 |
| Exercisable at March 31, 2015, Aggregate Intrinsic Value |
$ 31,238 |
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