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Employee Benefits (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Defined Benefit Plan Disclosure [Line Items] |  |  |
Estimated net loss in the next fiscal year | $ 1.7 |  |
Discount rate for determining benefit obligations at year end | 3.75% | 3.74% | 4.25%
Projected defined benefit plan benefit obligation | $ 152.0 |  |
Projected defined accumulated benefit obligation | $ 133.5 |  |
Diversified portfolio, allocation of assets in equities | 100.00% | 100.00% | 100.00%
Expected long-term return on diversified portfolio | 8.00% |  |
Company's contribution to the pension plan | $ 10.0 | $ 10.0 | $ 10.0
Expected future contribution in pension plan | $ 10.0 |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 75.00% |  |
Deferral contributions, net of forfeiture credits | $ 5.2 | $ 4.4 | $ 4.2
Minimum [Member] | Equity Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Diversified portfolio, allocation of assets in equities | 50.00% |  |
Maximum [Member] | Equity Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Diversified portfolio, allocation of assets in equities | 80.00% |  |

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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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