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Acquisitions and Divestitures - Additional Information (Detail) $ in Millions | 3 Months Ended
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Jan. 31, 2018 USD ($) Divestiture business | Jan. 31, 2017 USD ($) Divestiture business
Business Acquisition [Line Items] |  |
Number of divestitures (business) | Divestiture | 0 | 0
Number of acquisitions (business) | business | 0 | 0
Deconsolidation, number of businesses, nonstrategic | business |  | 1
Loss on disposal of businesses, net | $ 0.0 | $ 0.5
Proceeds from divestitures | 1.4 | $ 0.8
Notes Receivable |  |
Business Acquisition [Line Items] |  |
Consideration for divestiture | 2.9 |
2015 Divestiture |  |
Business Acquisition [Line Items] |  |
Proceeds from divestitures | 0.9 |
2017 Divestiture |  |
Business Acquisition [Line Items] |  |
Proceeds from divestitures | $ 0.5 |

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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