Stock-Based Benefit Plans (Stock Options - Assumptions Table) (Details 1) - Share-based Payment Arrangement, Option [Member] - $ / shares	12 Months Ended
Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Weighted-average assumptions and the fair value used for stock option grants
Weighted-average volatility	27.42%	30.46%	30.33%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	1.11%	1.36%	0.00%
Weighted-average grant date fair value per share of options granted	$ 9.68	$ 10.22	$ 16.09
Minimum [Member]
Weighted-average assumptions and the fair value used for stock option grants
Expected volatility	27.42%	28.61%	27.66%
Risk-free interest rate	1.72%	2.65%	2.17%
Expected life (years)	4 years 7 months 20 days	4 years 7 months 17 days	5 years
Maximum [Member]
Weighted-average assumptions and the fair value used for stock option grants
Expected volatility	28.30%	31.34%	31.83%
Risk-free interest rate	1.78%	2.76%	2.35%
Expected life (years)	5 years 9 months 3 days	8 years 6 months	8 years 6 months

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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