Stock-Based Compensation (Tables)

3 Months Ended

Jan. 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 three months ended January 31, 2017:

	Number of Options			Weighted-Average ExercisePrice Per Share		Aggregate Intrinsic Value		Weighted Average Remaining Term
Outstanding at October 31, 2016		1,881		$	58.41
Granted		381		$	107.66
Exercised		(187	)	$	44.95
Forfeited or expired		(11	)	$	80.74
Outstanding at January 31, 2017		2,064		$	68.61	$	92,706	7.0 years
Vested or expected to vest at January 31, 2017		2,029		$	68.17	$	92,049	6.9 years
Exercisable at January 31, 2017		1,126		$	53.19	$	67,960	5.4 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:

Three months ended	January 31, 2017		January 31, 2016
Expected volatility	29.0%-29.2%		29.1%-30.4%
Expected dividend yield		1.17%		1.54%
Risk-free interest rate	1.89%-2.01%		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 three months ended January 31, 2017:

	Number of Shares			Weighted-Average Grant Date Fair Value
Restricted shares at October 31, 2016		60		$	73.56
Granted		22		$	107.76
Forfeited		(2	)	$	71.55
Vested		(23	)	$	73.44
Restricted shares at January 31, 2017		57		$	87.12

Summarized Activity Related to Restricted Stock Units

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

	Number of Shares			Weighted-Average Grant Date Fair Value
Outstanding at October 31, 2016		99		$	41.72
Dividend equivalents		1		$	113.42
Distributions		(3	)	$	26.78
Outstanding at January 31, 2017		97		$	42.31