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Stock-Based Compensation (Tables) | 12 Months Ended
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Oct. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Summarized Activity Related to Stock Options | The following table summarizes activity related to stock options during 2022:
| Number of Options |  | Weighted˗Average Exercise Price Per Share |  | Aggregate Intrinsic Value |  | Weighted˗Average Remaining Term
Outstanding at October 31, 2021 | 1,235 |  |  | $ | 130.93 |  |  |  |  |
Granted | 85 |  |  | $ | 266.69 |  |  |  |  |
Exercised | (115) |  |  | $ | 108.33 |  |  |  |  |
Forfeited or expired | (18) |  |  | $ | 197.31 |  |  |  |  |
Outstanding at October 31, 2022 | 1,187 |  |  | $ | 141.82 |  |  | $ | 101,946 |  |  | 5.4 years
Expected to vest | 372 |  |  | $ | 185.15 |  |  | $ | 18,004 |  |  | 7.0 years
Exercisable at October 31, 2022 | 813 |  |  | $ | 121.76 |  |  | $ | 83,887 |  |  | 4.6 years
Summarized Information on Currently Outstanding Options | Summarized information on currently outstanding options follows:
| Range of Exercise Price
| $61 - $125 |  | $126 - $190 |  | $191 - $268
Number outstanding | 518 |  |  | 506 |  |  | 163 |
Weighted-average remaining contractual life, in years | 4.5 |  | 6.3 |  | 8.6
Weighted-average exercise price | $ | 104.76 |  |  | $ | 150.57 |  |  | $ | 232.62 |
Number exercisable | 447 |  |  | 345 |  |  | 21 |
Weighted-average exercise price | $ | 101.55 |  |  | $ | 143.04 |  |  | $ | 201.42 |
Fair Value Assumptions of Stock Options | The fair value of each option grant was estimated at the date of the grant using the Black-Scholes option-pricing model with the following assumptions:
| 2022 |  | 2021 |  | 2020
Expected volatility | 30.6%-30.8% |  | 30.8%-32.6% |  | 24.5%- | 30.5%
Expected dividend yield | 0.76%-0.89% |  | 0.83%-0.85% |  | 0.87%- | 1.16%
Risk-free interest rate | 1.36%-2.65% |  | 0.43%-0.77% |  | 0.44%- | 1.69%
Expected life of the option (in years) | 5.3-6.2 |  | 5.3-6.2 |  | 5.3- | 6.3
Summarized Activity Related to Restricted Stock | The following table summarizes activity related to restricted shares during 2022:
| Number of Shares |  | Weighted˗Average Grant Date Fair Value Per Share
Restricted at October 31, 2021 | 19 |  |  | $ | 157.36 |
Vested | (13) |  |  | $ | 153.28 |
Restricted at October 31, 2022 | 6 |  |  | $ | 167.99 |
Summarized Activity Related to Restricted Stock Units | The following table summarizes activity related to restricted share units in 2022:
| Number of Units |  | Weighted˗Average Grant Date Fair Value
Restricted share units at October 31, 2021 | 67 |  |  | $ | 202.81 |
Granted | 43 |  |  | $ | 253.04 |
Forfeited | (10) |  |  | $ | 224.84 |
Vested | (19) |  |  | $ | 215.57 |
Restricted share units at October 31, 2022 | 81 |  |  | $ | 223.77 |
Summarized Activity Related to Director Deferred Compensation Shares | The following table summarizes activity related to director deferred compensation share equivalent units during 2022:
| Number of Shares |  | Weighted˗Average Grant Date Fair Value Per Share
Outstanding at October 31, 2021 | 106 |  |  | $ | 68.11 |
Restricted stock units vested | 4 |  |  | $ | 255.04 |
Dividend equivalents | 1 |  |  | $ | 227.65 |
Distributions | (21) |  |  | $ | 68.12 |
Outstanding at October 31, 2022 | 90 |  |  | $ | 77.70 |

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