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Employee Benefits - Fair Value Measurement of Plan Assets (Details) - USD ($) $ in Millions | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2020
--- | --- | --- | --- | ---
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | $ 137.6 | $ 142.9 | $ 199.5 | $ 159.5
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 113.6 |  |  |
Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 24.0 |  |  |
Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Cash and cash equivalents |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 3.9 |  |  |
Cash and cash equivalents | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 3.9 |  |  |
Cash and cash equivalents | Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Cash and cash equivalents | Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Corporate common stock |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 35.8 |  |  |
Corporate common stock | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 35.8 |  |  |
Corporate common stock | Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Corporate common stock | Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Equity mutual funds |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 53.9 |  |  |
Equity mutual funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 53.9 |  |  |
Equity mutual funds | Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Equity mutual funds | Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Balanced funds |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 3.3 |  |  |
Balanced funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 3.3 |  |  |
Balanced funds | Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Balanced funds | Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Alternative investments |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.9 |  |  |
Alternative investments | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.9 |  |  |
Alternative investments | Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Alternative investments | Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 0.0 |  |  |
Fixed Income Investments |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 39.8 |  |  |
Fixed Income Investments | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 15.8 |  |  |
Fixed Income Investments | Significant Observable Inputs (Level 2) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | 24.0 |  |  |
Fixed Income Investments | Significant Unobservable Inputs (Level 3) |  |  |  |
Defined Benefit Plan, Plan Assets, Category [Line Items] |  |  |  |
Fair value of plan assets | $ 0.0 |  |  |

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