Stock-Based Benefit Plans Stock-Based Benefit Plans (TSR RSUs) (Details 8) - USD ($)	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 26,180,000	$ 28,312,000	$ 28,466,000
Unamortized value of stock compensation	$ 18,700,000	$ 20,900,000	24,200,000
Restricted Stock Units (RSUs) [Member] \| Vesting based on total shareholder return [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for income taxes related to share issued for RSU	16,643	13,974
Value of shares withheld for income taxes on restricted shares issued	$ 537,902	$ 470,364
Share-based Payment Arrangement, Expense	1,673,000	2,502,000	3,400,000
Unamortized value of stock compensation	$ 1,875,000	$ 1,773,000	$ 2,200,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	23,817	33,553
Vesting Based On Performance [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares withheld for income taxes related to share issued for RSU	123,409	126,330	133,098
Value of shares withheld for income taxes on restricted shares issued	$ 4,000,000.0	$ 6,000,000.0	$ 4,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	158,721	135,554	168,417
Minimum Percentage of Units Issued to Recipients of Base Award	0.00%	0.00%
Maximum Percentage of Units Issued to Recipients of Base Award	150.00%	110.00%
Share-based Payment Arrangement, Expense	$ 5,514,000	$ 6,949,000	$ 7,031,000
Unamortized value of stock compensation	$ 3,431,000	$ 3,824,000	$ 4,599,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	176,631	162,484	169,416
Vesting based on total shareholder return [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	48,710	39,411	46,361
Minimum Percentage of Units Issued to Recipients of Base Award	0.00%	0.00%
Maximum Percentage of Units Issued to Recipients of Base Award	150.00%	200.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	29.06%	26.58%	26.91%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.64%	1.92%	1.52%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments	$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 36.46	$ 52.62	$ 39.21
Vesting based on total shareholder return [Member] \| Restricted Stock Units (RSUs) [Member] \| Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	57,230
Share-based compensation, percent of total sharehold return RSUs earned during the performance period	0.00%	76.81%	83.05%
Vesting based on total shareholder return [Member] \| Restricted Stock Units (RSUs) [Member] \| Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		52,679

Maximum percentage of units issued to the recipients of the base award.

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Shares withheld for income taxes related to share issued for RSU

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends.

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

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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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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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