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Employee Benefits - Schedule of Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Details) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022
Other changes in plan assets and benefit obligations recognized in other comprehensive income: |  |  |
Net (gain) loss | $ 2.2 | $ (4.0) | $ (34.1)
Amortizations of net gain | 0.0 | 0.0 | (2.5)
Total recognized in other comprehensive (income) loss | 2.2 | (4.0) | (36.6)
Total recognized in net periodic benefit cost and other comprehensive (income) loss | $ 8.7 | $ 2.8 | $ (26.2)

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