Stock-Based Compensation (Tables)

3 Months Ended

Jan. 31, 2016

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, 2016:

	Number of Options			Weighted-Average ExercisePrice Per Share		Aggregate Intrinsic Value		Weighted Average Remaining Term
Outstanding at October 31, 2015		1,759		$	50.74
Granted		490		$	70.91
Exercised		(27	)	$	33.12
Forfeited or expired		(14	)	$	63.45
Outstanding at January 31, 2016		2,208		$	55.35	$	25,217	6.7 years
Vested or expected to vest at January 31, 2016		2,170		$	55.06	$	25,217	6.6 years
Exercisable at January 31, 2016		1,304		$	43.47	$	25,217	5.1 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, 2016		January 31, 2015
Expected volatility	29.1%-30.4%		31.6%-39.5%
Expected dividend yield		1.54%		1.10%
Risk-free interest rate	1.78%-1.90%		1.70%-1.85%
Expected life of the option (in years)	5.4-6.2		5.4-6.1

Summarized Activity Related to Restricted Stock

The following table summarizes activity related to restricted shares during the three months ended January 31, 2016:

	Number of Shares			Weighted-Average Grant Date Fair Value
Restricted shares at October 31, 2015		53		$	73.23
Granted		30		$	70.80
Vested		(23	)	$	69.31
Restricted shares at January 31, 2016		60		$	73.47

Summarized Activity Related to Restricted Stock Units

The following table summarizes activity related to restricted share units during the three months ended January 31, 2016:

	Number of Units		Weighted-Average Grant Date Fair Value
Restricted share units at October 31, 2015		0	$	—
Granted		13	$	72.01
Restricted share units at January 31, 2016		13	$	72.01

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, 2016:

	Number of Shares			Weighted-Average Grant Date Fair Value
Outstanding at October 31, 2015		100		$	36.76
Dividend equivalents		1		$	62.41
Distributions		(3	)	$	29.09
Outstanding at January 31, 2016		98		$	37.21