Stock Based Compensation - Balance of Outstanding and Exercisable Stock Options (Detail) $ / shares in Units, $ in Millions	3 Months Ended
Sep. 30, 2016 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Option Awards Outstanding, Balance at June 30, 2016 \| shares	2,711,542
Stock Option Awards Outstanding, Granted \| shares	106,602
Stock Option Awards Outstanding, Exercised \| shares	(78,309)
Stock Option Awards Outstanding, Forfeited \| shares	(45,190)
Stock Option Awards Outstanding, Balance at September 30, 2016 \| shares	2,694,645
Stock Option Awards Outstanding, Exercisable at September 30, 2016 \| shares	2,024,661
Weighted Average Exercise Price, Balance at June 30, 2016 \| $ / shares	$ 46.69
Weighted Average Exercise Price, Granted \| $ / shares	52.47
Weighted Average Exercise Price, Exercised \| $ / shares	25.46
Weighted Average Exercise Price, Forfeited \| $ / shares	71.86
Weighted Average Exercise Price, Balance at September 30, 2016 \| $ / shares	47.12
Weighted Average Exercise Price, Exercisable at September 30, 2016 \| $ / shares	$ 38.58
Aggregate Intrinsic Value of Stock Option Awards, Balance at September 30, 2016 \| $	$ 45.1
Aggregate Intrinsic Value of Stock Option Awards, Exercisable at September 30, 2016 \| $	$ 44.6

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Number of share options (or share units) exercised during the current period.

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