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POST RETIREMENT BENEFIT PLANS (Tables) | 3 Months Ended
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Jan. 31, 2021
Postemployment Benefits [Abstract] |
Components of Net Periodic Pension Cost | The components of net periodic pension cost include the following:
| Three Months Ended January 31, |  |
(in millions) | 2021 |  | 2020 |  |  |  |
Service cost | $ | 3.1 |  |  | $ | 3.2 |  |  |  |  |
Interest cost | 4.5 |  |  | 6.6 |  |  |  |  |
Expected return on plan assets | (7.9) |  |  | (10.3) |  |  |  |  |
Amortization of prior service cost | — |  |  | 3.5 |  |  |  |  |
Recognized net actuarial loss | 3.8 |  |  | — |  |  |  |  |
Net periodic pension cost | $ | 3.5 |  |  | $ | 3.0 |  |  |  |  |

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