SHARE-BASED COMPENSATION, Share-based Activity (Details) - $ / shares shares in Thousands	12 Months Ended
Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Shares Available for Grant [Roll Forward]
Opening Balance Outstanding Shares (Shares Available For Grant)	830	2,016	2,590
Shares approved by Shareholders (Shares Available for Grant)	5,000
Granted (Available for Grant)	(412)	(1,186)	(586)
Cancelled (Available for Grant)	24		12
Ending Balance Outstanding Shares (Shares Available For Grant)	4,612	830	2,016
Shares Outstanding [Roll Forward]
Outstanding (Shares Under Option)	7,297	6,520	6,514
Granted (Shares Under Option)	412	1,186	586
Exercised (Shares Under Option)	(1,285)	(409)	(568)
Cancelled (Shares Under Option)	(24)		(12)
Outstanding (Shares Under Option)	6,400	7,297	6,520
Weighted Average Exercise Price [Roll Forward]
Outstanding (in dollars per share)	$ 18.58	$ 14.23	$ 13.07
Granted (in dollars per share)	65.64	41.37	23.58
Exercised (in dollars per share)	10.54	15.27	10.45
Cancelled (in dollars per share)	28.85		18.62
Outstanding (in dollars per share)	$ 23.19	$ 18.58	$ 14.23
2012 Incentive Compensation Plan [Member]
Shares Available for Grant [Roll Forward]
Cancelled (Available for Grant)	(830)

Share-based Compensation Arrangement, Shares Available for Grant [Roll Forward]

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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- Definition

Other than shares newly issued, the number of additional shares issued (for example, a stock split) or canceled (for example, to correct a share issuance), during the period under the plan.

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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- Definition

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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