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Post Retirement Benefit Plans - Components of Net Periodic Pension Cost (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2018 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
Special Events |  |  |  |
Settlement | $ 0.9 |  |  | $ 25.9
Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | $ 14.1 | $ 12.3 | 13.3
Interest cost |  | 31.0 | 18.9 | 18.2
Expected return on plan assets |  | (38.8) | (25.5) | (27.7)
Amortization of prior service (cost) benefit |  | (0.1) | (0.2) | (0.1)
Recognized net actuarial loss |  | 7.1 | 11.0 | 10.9
Other Adjustments |  |  | 2.8 |
Special Events |  |  |  |
Settlement |  |  | 1.3 | 27.8
Net periodic pension (benefit) cost |  | 13.3 | 20.6 | 42.4
Loss on sale of business |  |  |  | 0.7
Pension Plan | United States |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 12.7 | 10.8 | 11.8
Interest cost |  | 25.4 | 13.2 | 12.9
Expected return on plan assets |  | (30.5) | (16.8) | (15.6)
Amortization of prior service (cost) benefit |  | (0.1) | (0.1) | 0.0
Recognized net actuarial loss |  | 5.0 | 8.1 | 8.1
Other Adjustments |  |  | 0.0 |
Special Events |  |  |  |
Settlement |  |  | 0.0 | 25.9
Net periodic pension (benefit) cost |  | 12.5 | 15.2 | 43.1
Pension Plan | Germany |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.3 | 0.4 | 0.5
Interest cost |  | 0.5 | 0.5 | 0.5
Expected return on plan assets |  | 0.0 | 0.0 | 0.0
Amortization of prior service (cost) benefit |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  | 0.9 | 1.1 | 1.3
Other Adjustments |  |  | 0.0 |
Special Events |  |  |  |
Settlement |  |  | 0.0 | 0.7
Net periodic pension (benefit) cost |  | 1.7 | 2.0 | 3.0
Pension Plan | United Kingdom |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.5 | 0.5 | 0.5
Interest cost |  | 3.9 | 4.0 | 3.8
Expected return on plan assets |  | (6.2) | (6.5) | (10.2)
Amortization of prior service (cost) benefit |  | 0.1 | 0.0 | 0.0
Recognized net actuarial loss |  | 1.2 | 1.7 | 1.5
Other Adjustments |  |  | 2.8 |
Special Events |  |  |  |
Settlement |  |  | 1.3 | 1.2
Net periodic pension (benefit) cost |  | (0.5) | 3.8 | (3.2)
Pension Plan | Netherlands |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.5 | 0.5 | 0.4
Interest cost |  | 0.9 | 0.9 | 0.7
Expected return on plan assets |  | (1.3) | (1.4) | (1.2)
Amortization of prior service (cost) benefit |  | (0.1) | (0.1) | (0.1)
Recognized net actuarial loss |  | 0.0 | 0.0 | 0.0
Other Adjustments |  |  | 0.0 |
Special Events |  |  |  |
Settlement |  |  | 0.0 | 0.0
Net periodic pension (benefit) cost |  | 0.0 | (0.1) | (0.2)
Pension Plan | Other International |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost |  | 0.1 | 0.1 | 0.1
Interest cost |  | 0.3 | 0.3 | 0.3
Expected return on plan assets |  | (0.8) | (0.8) | (0.7)
Amortization of prior service (cost) benefit |  | 0.0 | 0.0 | 0.0
Recognized net actuarial loss |  | 0.0 | 0.1 | 0.0
Other Adjustments |  |  | 0.0 |
Special Events |  |  |  |
Settlement |  |  | 0.0 | 0.0
Net periodic pension (benefit) cost |  | $ (0.4) | $ (0.3) | $ (0.3)

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