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Stock-Based Compensation (Tables)
 12 Months Ended
Oct. 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 during 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

 

 

(316

)

 

$

45.13

 

 

 

 

 

 

 

Forfeited or expired

 

 

(24

)

 

$

81.92

 

 

 

 

 

 

 

Outstanding at October 31, 2017

 

 

1,922

 

 

$

70.08

 

 

$

108,823

 

 

6.4 years

Vested at October 31, 2017 or expected to vest

 

 

1,905

 

 

$

69.84

 

 

$

108,294

 

 

6.4 years

Exercisable at October 31, 2017

 

 

999

 

 

$

54.23

 

 

$

72,357

 

 

4.7 years

 
Summarized Information on Currently Outstanding Options

Summarized information on currently outstanding options follows:

 

 

 

Range of Exercise Price

 

 

 

$14 - $28

 

 

$29 - $65

 

 

$66 - $125

 

Number outstanding

 

 

139

 

 

 

516

 

 

 

1,267

 

Weighted-average remaining contractual life, in years

 

 

1.6

 

 

 

4.1

 

 

 

7.9

 

Weighted-average exercise price

 

$

21.50

 

 

$

49.83

 

 

$

83.66

 

Number exercisable

 

 

139

 

 

 

516

 

 

 

344

 

Weighted-average exercise price

 

$

21.50

 

 

$

49.83

 

 

$

74.09

 

 
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:

 

 

 

 

2017

 

 

 

2016

 

 

 

2015

 

Expected volatility

 

26.0%-29.2%

 

 

29.1%-30.4%

 

 

30.3%-39.5%

 

Expected dividend yield

 

0.91%-1.17%

 

 

 

1.54%

 

 

1.06%-1.10%

 

Risk-free interest rate

 

1.89%-2.06%

 

 

1.78%-1.90%

 

 

1.57%˗1.85%

 

Expected life of the option (in years)

 

5.4-6.2

 

 

5.4-6.2

 

 

5.4˗6.1

 

 
Summarized Activity Related to Restricted Stock

The following table summarizes activity related to restricted shares during 2017:

 

 

 

Number of

Shares

 

 

Weighted˗Average

Grant Date Fair

Value Per Share

 

Restricted at October 31, 2016

 

 

60

 

 

$

73.56

 

Granted

 

 

28

 

 

$

109.04

 

Forfeited

 

 

(4

)

 

$

72.25

 

Vested

 

 

(26

)

 

$

74.08

 

Restricted at October 31, 2017

 

 

58

 

 

$

90.38

 

 
Summarized Activity Related to Restricted Stock Units

The following table summarizes activity related to restricted share units in 2017:

 

 

 

Number of

Units

 

 

Weighted˗Average Grant Date Fair

Value

 

Restricted share units at October 31, 2016

 

 

0

 

 

$

—

 

Granted

 

 

10

 

 

$

97.43

 

Vested

 

 

(10

)

 

$

97.43

 

Restricted share units at October 31, 2017

 

 

0

 

 

$

—

 

 
Summarized Activity Related to Director Deferred Compensation Shares

The following table summarizes activity related to director deferred compensation share equivalent units during 2017:

 

 

 

Number of

Shares

 

 

Weighted˗Average

Grant Date Fair

Value Per Share

 

Outstanding at October 31, 2016

 

 

99

 

 

$

41.72

 

Restricted stock units vested

 

 

6

 

 

$

97.60

 

Dividend equivalents

 

 

1

 

 

$

115.54

 

Distributions

 

 

(5

)

 

$

26.89

 

Outstanding at October 31, 2017

 

 

101

 

 

$

46.74