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Stock Plans (Tables) | 12 Months Ended
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Oct. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Compensation Expense and Related Income Tax Benefit for Share-Based Awards | The compensation cost and related tax benefit recognized in our consolidated financial statements for share-based awards were as follows:
October 31, |  |  |
(In millions) | 2017 |  | 2016 |  | 2015
Selling, general and administrative expense | $ | 33.1 |  |  | $ | 26.2 |  |  | $ | 29.2 |
Cost of sales | 2.8 |  |  | 2.6 |  |  | 2.8 |
Research and development expense | 1.3 |  |  | 1.1 |  |  | 0.9 |
Total compensation expense | $ | 37.2 |  |  | $ | 29.9 |  |  | $ | 32.9 |
Related income tax benefit | $ | 11.4 |  |  | $ | 9.0 |  |  | $ | 10.2 |
Schedule of Assumptions Used in Estimating Fair Value of Stock Options Award Granted | The dividend yield is based on the projected annual dividend payment per share, divided by the stock price at the date of grant.
Years Ended October 31, | 2017 |  | 2016 |  | 2015
Expected life | 5.5 years |  |  | 4.8 - 5.5 years |  |  | 4.8 - 5.5 years |
Expected volatility | 24.5 | % |  | 27.6% - 27.7% |  |  | 29.0% - 29.5% |
Risk-free interest rate | 1.2% |  |  | 1.3% - 1.5% |  |  | 1.3% - 1.5% |
Dividend yield | 0.03 | % |  | 0.04 | % |  | 0.04 | %
Schedule of Stock Option Plans | The activity and status of our stock option plans are summarized below:
| Number of Shares |  | Weighted- Average Exercise Price Per Share |  | Weighted- Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value
Outstanding at October 31, 2016 | 1,105,388 |  |  | $ | 107.74 |  |  |  |  |
Granted | 194,416 |  |  | $ | 175.31 |  |  |  |  |
Exercised | 200,108 |  |  | $ | 53.42 |  |  |  |  |
Forfeited or expired | 35,230 |  |  | $ | 136.90 |  |  |  |  |
Outstanding at October 31, 2017 | 1,064,466 |  |  | $ | 129.33 |  |  | 6.95 |  |
Vested and expected to vest at October 31, 2017 | 1,045,509 |  |  | $ | 128.99 |  |  | 6.92 |  | $ | 116,337,456 |
Vested and exercisable at October 31, 2017 | 439,137 |  |  | $ | 106.07 |  |  | 5.44 |  | $ | 58,929,605 |
Schedule of Non-Vested RSUs | The status of our non-vested RSUs is summarized below:
| Number of Shares |  | Weighted- Average Grant Date Fair Value Per Share
Non-vested RSUs at October 31, 2016 | 507,779 |  |  | $ | 131.63 |
Granted | 201,877 |  |  | $ | 177.05 |
Vested and issued | 150,423 |  |  | $ | 126.27 |
Forfeited or expired | 25,381 |  |  | $ | 139.65 |
Non-vested RSUs at October 31, 2017 | 533,852 |  |  | $ | 149.93 |

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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