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Financial Instruments and Fair Value Measurements - Recurring Fair Value Measurements (Details) - USD ($) $ in Millions | Oct. 31, 2019 | Oct. 31, 2018
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Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | $ 7.6 | $ 44.0
Other long-term assets | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 1.3 | 16.5
Other long-term assets | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 20.0 | 20.4
Other long-term liabilities and other current liabilities | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | (25.0) |
Other current assets | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.9 | 2.6
Other current liabilities | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | (0.2) | (0.7)
Other long-term assets and other current assets | Cross currency swap |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 10.6 | 5.2
Level 1 |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 1 | Other long-term assets | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 1 | Other long-term assets | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 1 | Other long-term liabilities and other current liabilities | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 |
Level 1 | Other current assets | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 1 | Other current liabilities | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 1 | Other long-term assets and other current assets | Cross currency swap |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 2 |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | (12.4) | 23.6
Level 2 | Other long-term assets | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 1.3 | 16.5
Level 2 | Other long-term assets | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 2 | Other long-term liabilities and other current liabilities | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | (25.0) |
Level 2 | Other current assets | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.9 | 2.6
Level 2 | Other current liabilities | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | (0.2) | (0.7)
Level 2 | Other long-term assets and other current assets | Cross currency swap |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 10.6 | 5.2
Level 3 |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 20.0 | 20.4
Level 3 | Other long-term assets | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 3 | Other long-term assets | Insurance annuity |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 20.0 | 20.4
Level 3 | Other long-term liabilities and other current liabilities | Interest rate derivatives |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 |
Level 3 | Other current assets | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 3 | Other current liabilities | Foreign exchange hedges |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | 0.0 | 0.0
Level 3 | Other long-term assets and other current assets | Cross currency swap |  |
Fair Value Assets Measured On Recurring Basis [Line Items] |  |
Foreign exchange hedges/Insurance annuity | $ 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958 + Details
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