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POST-RETIREMENT BENEFIT PLANS - Fair Value Measurements for Pension Assets (Details) - USD ($) $ in Millions | Oct. 31, 2021 | Oct. 31, 2020
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Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total Assets in the Fair Value Hierarchy | $ 512.2 | $ 440.9
Assets in the Fair Value Hierarchy | 950.8 | 1,002.1
Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total Assets in the Fair Value Hierarchy | 109.7 | 33.3
Assets in the Fair Value Hierarchy | 109.7 | 33.3
Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total Assets in the Fair Value Hierarchy | 402.5 | 407.6
Assets in the Fair Value Hierarchy | 402.5 | 407.6
Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total Assets in the Fair Value Hierarchy | 0.0 | 0.0
Assets in the Fair Value Hierarchy | 0.0 | 0.0
Mutual funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 215.9 | 131.6
Mutual funds | Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 87.4 | 9.2
Mutual funds | Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 128.5 | 122.4
Mutual funds | Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Mutual funds | Investments Measured at Net Asset Value |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Investments Measured at Net Asset Value |  | 0.5
Insurance contracts | Investments Measured at Net Asset Value |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Investments Measured at Net Asset Value | 122.9 | 132.9
Common stock |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 6.6 | 9.3
Common stock | Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 6.6 | 9.3
Common stock | Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Common stock | Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Common stock | Investments Measured at Net Asset Value |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Investments Measured at Net Asset Value | 94.2 | 215.4
Cash |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 15.7 | 14.8
Cash | Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 15.7 | 14.8
Cash | Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Cash | Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Corporate bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 228.5 | 250.3
Corporate bonds | Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Corporate bonds | Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 228.5 | 250.3
Corporate bonds | Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Corporate bonds | Investments Measured at Net Asset Value |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Investments Measured at Net Asset Value | 209.2 | 203.1
Government bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 44.5 | 34.2
Government bonds | Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Government bonds | Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 44.5 | 34.2
Government bonds | Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Government bonds | Investments Measured at Net Asset Value |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Investments Measured at Net Asset Value | 12.3 | 9.3
Other assets |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1.0 | 0.7
Other assets | Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 0.0 | 0.0
Other assets | Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | 1.0 | 0.7
Other assets | Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount | $ 0.0 | $ 0.0

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