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Stock-Based Compensation (Tables)

9 Months Ended

Jul. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summarized Activity Related to Stock Options

The following table summarizes activity related to stock options for the nine months ended July 31, 2017:

		Number of Options				Weighted-Average Exercise Price Per Share				Aggregate Intrinsic Value				Weighted Average Remaining Term
Outstanding at October 31, 2016			1,881			$	58.41
Granted			381			$	107.68
Exercised			(298	)		$	44.84
Forfeited or expired			(14	)		$	79.10
Outstanding at July 31, 2017			1,950			$	69.98			$	111,202			6.6 years
Vested or expected to vest at July 31, 2017			1,928			$	69.69			$	110,506			6.6 years
Exercisable at July 31, 2017			1,016			$	54.16			$	74,008			5.0 years

Fair Value Assumptions of Stock Options

The fair value of each option grant was estimated at the date of grant using the Black-Scholes option-pricing model with the following assumptions:

Nine months ended		July 31, 2017		July 31, 2016
Expected volatility		26.0%-29.2%		29.1%-30.4%
Expected dividend yield		0.91%-1.17%			1.54%
Risk-free interest rate		1.89%-2.06%		1.78%-1.90%
Expected life of the option (in years)		5.4-6.2		5.4-6.2

Summarized Activity Related to Restricted Stock

The following table summarizes activity related to restricted shares during the nine months ended July 31, 2017:

		Number of Shares				Weighted-Average Grant Date Fair Value
Restricted shares at October 31, 2016			60			$	73.56
Granted			24			$	108.88
Forfeited			(2	)		$	71.42
Vested			(24	)		$	73.53
Restricted shares at July 31, 2017			58			$	88.58

Summarized Activity Related to Restricted Stock Units

The following table summarizes activity related to restricted share units during the nine months ended July 31, 2017:

		Number of Units				Weighted-Average Grant Date Fair Value
Restricted share units at October 31, 2016			0			$	—
Granted			10			$	97.43
Restricted share units at July 31, 2017			10			$	97.43

Summarized Activity Related to Director Deferred Compensation Shares

The following table summarizes activity related to director deferred compensation share equivalent units during the nine months ended July 31, 2017:

		Number of Shares				Weighted-Average Grant Date Fair Value
Outstanding at October 31, 2016			99			$	41.72
Dividend equivalents			1			$	118.09
Distributions			(5	)		$	26.89
Outstanding at July 31, 2017			95			$	43.09

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
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Tabular disclosure of the changes in outstanding nonvested shares.

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-Publisher FASB
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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock awards granted to nonemployee directors that were outstanding at the beginning and end of the year, and the number of awards that were granted, exercised or converted, forfeited, and expired during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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