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Financial Instruments and Fair Value Measurements - Recurring Fair Value Measurements (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Millions | Jul. 31, 2017 | Oct. 31, 2016
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Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | $ 28.0 | $ 20.1
Level 1 |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 | 0.0
Level 2 |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 6.6 | 0.0
Level 3 |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 21.4 | 20.1
Other long-term assets | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 21.4 | 20.1
Other long-term assets | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 7.1 |
Other long-term assets | Level 1 | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 | 0.0
Other long-term assets | Level 1 | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 |
Other long-term assets | Level 2 | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 | 0.0
Other long-term assets | Level 2 | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 7.1 |
Other long-term assets | Level 3 | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 21.4 | 20.1
Other long-term assets | Level 3 | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 |
Prepaid expenses and other current assets | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.1 | 0.3
Prepaid expenses and other current assets | Level 1 | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 | 0.0
Prepaid expenses and other current assets | Level 2 | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.1 | 0.3
Prepaid expenses and other current assets | Level 3 | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 | 0.0
Other current liabilities | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | (0.6) | (0.3)
Other current liabilities | Level 1 | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | 0.0 | 0.0
Other current liabilities | Level 2 | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | (0.6) | (0.3)
Other current liabilities | Level 3 | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Fair value of assets (liabilities) | $ 0.0 | $ 0.0

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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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