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Stock-Based Compensation (Tables) | 12 Months Ended
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Oct. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summarized Activity Related to Stock Options | The following table summarizes activity related to stock options during 2019:
|  | Number of Options |  |  | Weighted˗Average Exercise Price Per Share |  |  | Aggregate Intrinsic Value |  |  | Weighted˗Average Remaining Term
Outstanding at October 31, 2018 |  |  | 1,885 |  |  | $ | 85.33 |  |  |  |  |  |  |
Granted |  |  | 348 |  |  | $ | 124.89 |  |  |  |  |  |  |
Exercised |  |  | (416 | ) |  | $ | 62.51 |  |  |  |  |  |  |
Forfeited or expired |  |  | (30 | ) |  | $ | 121.60 |  |  |  |  |  |  |
Outstanding at October 31, 2019 |  |  | 1,787 |  |  | $ | 97.74 |  |  | $ | 105,567 |  |  | 6.6 years
Expected to vest |  |  | 873 |  |  | $ | 115.26 |  |  | $ | 36,255 |  |  | 8.0 years
Exercisable at October 31, 2019 |  |  | 902 |  |  | $ | 80.42 |  |  | $ | 68,915 |  |  | 5.3 years
Summarized Information on Currently Outstanding Options | Summarized information on currently outstanding options follows:
|  | Range of Exercise Price |
|  | $43 - $62 |  |  | $63 - $81 |  |  | $82 - $129 |
Number outstanding |  |  | 160 |  |  |  | 638 |  |  |  | 989 |
Weighted-average remaining contractual life, in years |  |  | 2.6 |  |  |  | 5.4 |  |  |  | 8.1 |
Weighted-average exercise price |  | $ | 55.20 |  |  | $ | 73.48 |  |  | $ | 120.26 |
Number exercisable |  |  | 160 |  |  |  | 527 |  |  |  | 215 |
Weighted-average exercise price |  | $ | 55.20 |  |  | $ | 74.03 |  |  | $ | 114.72 |
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:
|  |  | 2019 |  |  |  | 2018 |  |  |  | 2017 |
Expected volatility |  | 24.1%-24.5% |  |  | 24.0%-26.7% |  |  | 26.0%-29.2% |
Expected dividend yield |  | 1.04% |  |  | 0.97% |  |  | 0.91%-1.17% |
Risk-free interest rate |  | 2.84%-2.95% |  |  | 2.09%-2.20% |  |  | 1.89%-2.06% |
Expected life of the option (in years) |  | 5.3-6.2 |  |  | 5.4-6.2 |  |  | 5.4-6.2 |
Summarized Activity Related to Restricted Stock | The following table summarizes activity related to restricted shares during 2019:
|  | Number of Shares |  |  | Weighted˗Average Grant Date Fair Value Per Share |
Restricted at October 31, 2018 |  |  | 53 |  |  | $ | 108.82 |
Granted |  |  | 41 |  |  | $ | 131.30 |
Forfeited |  |  | (2 | ) |  | $ | 111.75 |
Vested |  |  | (26 | ) |  | $ | 97.84 |
Restricted at October 31, 2019 |  |  | 66 |  |  | $ | 126.83 |
Summarized Activity Related to Restricted Stock Units | The following table summarizes activity related to restricted share units in 2019:
|  | Number of Units |  |  | Weighted˗Average Grant Date Fair Value |
Restricted share units at October 31, 2018 |  |  | — |  |  | $ | — |
Granted |  |  | 8 |  |  | $ | 126.83 |
Vested |  |  | (8 | ) |  | $ | 126.83 |
Restricted share units at October 31, 2019 |  |  | — |  |  | $ | — |
Summarized Activity Related to Director Deferred Compensation Shares | The following table summarizes activity related to director deferred compensation share equivalent units during 2019:
|  | Number of Shares |  |  | Weighted˗Average Grant Date Fair Value Per Share |
Outstanding at October 31, 2018 |  |  | 107 |  |  | $ | 51.24 |
Restricted stock units vested |  |  | 5 |  |  | $ | 126.89 |
Dividend equivalents |  |  | 2 |  |  | $ | 132.49 |
Outstanding at October 31, 2019 |  |  | 114 |  |  | $ | 55.52 |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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