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Stock-Based Compensation (Tables) | 12 Months Ended
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Oct. 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 during 2016:
|  | Number of Options |  |  | Weighted˗Average Exercise Price Per Share |  |  | Aggregate Intrinsic Value |  |  | Weighted˗Average Remaining Term
Outstanding at October 31, 2015 |  |  | 1,759 |  |  | $ | 50.74 |  |  |  |  |  |  |
Granted |  |  | 490 |  |  | $ | 70.91 |  |  |  |  |  |  |
Exercised |  |  | (333 | ) |  | $ | 35.12 |  |  |  |  |  |  |
Forfeited or expired |  |  | (35 | ) |  | $ | 69.23 |  |  |  |  |  |  |
Outstanding at October 31, 2016 |  |  | 1,881 |  |  | $ | 58.41 |  |  | $ | 78,461 |  |  | 6.4 years
Vested at October 31, 2016 or expected to vest |  |  | 1,861 |  |  | $ | 58.27 |  |  | $ | 77,925 |  |  | 6.4 years
Exercisable at October 31, 2016 |  |  | 996 |  |  | $ | 45.90 |  |  | $ | 54,031 |  |  | 4.7 years
Summarized Information on Currently Outstanding Options | Summarized information on currently outstanding options follows:
|  | Range of Exercise Price |
|  | $14 - $28 |  |  | $29 - $44 |  |  | $45 - $81 |
Number outstanding |  |  | 236 |  |  |  | 434 |  |  |  | 1,211 |
Weighted-average remaining contractual life, in years |  |  | 2.4 |  |  |  | 4.4 |  |  |  | 7.9 |
Weighted-average exercise price |  | $ | 22.68 |  |  | $ | 41.49 |  |  | $ | 71.44 |
Number exercisable |  |  | 236 |  |  |  | 434 |  |  |  | 326 |
Weighted-average exercise price |  | $ | 22.68 |  |  | $ | 41.49 |  |  | $ | 68.53 |
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:
|  |  | 2016 |  |  |  | 2015 |  |  |  | 2014 |
Expected volatility |  | 29.1%-30.4% |  |  | 30.3%-39.5% |  |  | 40.1%˗44.7% |
Expected dividend yield |  |  | 1.54% |  |  | 1.06%-1.10% |  |  | 0.98%˗1.03% |
Risk-free interest rate |  | 1.78%-1.90% |  |  | 1.57%˗1.85% |  |  | 1.51%˗1.79% |
Expected life of the option (in years) |  | 5.4-6.2 |  |  | 5.4˗6.1 |  |  | 5.4˗6.1 |
Summarized Activity Related to Restricted Stock | The following table summarizes activity related to restricted shares during 2016:
|  | Number of Shares |  |  | Weighted˗Average Grant Date Fair Value Per Share |
Restricted at October 31, 2015 |  |  | 53 |  |  | $ | 73.23 |
Granted |  |  | 30 |  |  | $ | 70.80 |
Vested |  |  | (23 | ) |  | $ | 69.17 |
Restricted at October 31, 2016 |  |  | 60 |  |  | $ | 73.56 |
Summarized Activity Related to Restricted Stock Units | The following table summarizes activity related to restricted share units in 2016:
|  | Number of Units |  |  | Weighted˗Average Grant Date Fair Value |
Restricted share units at October 31, 2015 |  |  | 0 |  |  | $ | — |
Granted |  |  | 13 |  |  | $ | 72.01 |
Vested |  |  | (13 | ) |  | $ | 72.01 |
Restricted share units at October 31, 2016 |  |  | 0 |  |  | $ | — |
Summarized Activity Related to Director Deferred Compensation Shares | The following table summarizes activity related to director deferred compensation share equivalent units during 2016:
|  | Number of Shares |  |  | Weighted˗Average Grant Date Fair Value Per Share |
Outstanding at October 31, 2015 |  |  | 100 |  |  | $ | 36.76 |
Deferrals |  |  | 1 |  |  | $ | 78.59 |
Restricted stock units vested |  |  | 8 |  |  | $ | 72.09 |
Dividend equivalents |  |  | 1 |  |  | $ | 77.95 |
Distributions |  |  | (11 | ) |  | $ | 26.33 |
Outstanding at October 31, 2016 |  |  | 99 |  |  | $ | 41.72 |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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