Stock-based Compensation - Summarized Activity Related to Stock Options (Detail) (Stock Options [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Oct. 31, 2013
Stock Options [Member]
Annual Activity of Stock Option Plans [Line Items]
Number of Options, Outstanding, Beginning balance	1,764
Number of Options, Granted	283
Number of Options, Exercised	(283)
Number of Options, Forfeited or expired	(15)
Number of Options, Outstanding, Ending balance	1,749
Number of Options, Vested or expected to vest	1,699
Number of Options, Exercisable	942
Weighted-Average Exercise Price Per Share, Outstanding, Beginning balance	$ 28.35
Weighted-Average Exercise Price Per Share, Granted	$ 61.61
Weighted-Average Exercise Price Per Share, Exercised	$ 21.72
Weighted-Average Exercise Price Per Share, Forfeited or expired	$ 48.38
Weighted-Average Exercise Price Per Share, Outstanding, Ending balance	$ 34.63
Weighted-Average Exercise Price Per Share, Vested or expected to vest	$ 34.22
Weighted-Average Exercise Price Per Share, Exercisable	$ 25.07
Aggregate Intrinsic Value, Outstanding	$ 65,492
Aggregate Intrinsic Value, Vested or expected to vest	64,348
Aggregate Intrinsic Value, Exercisable	$ 44,276
Weighted Average Remaining Term, Outstanding	6 years 1 month 6 days
Weighted Average Remaining Term, Vested or expected to vest	6 years 1 month 6 days
Weighted Average Remaining Term, Exercisable	4 years 8 months 12 days

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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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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.

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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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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, 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 or that expired.

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Weighted average price of options that were either forfeited or expired.

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Net 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 remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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

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