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Employee Benefits - Schedule of Estimated Future Benefit Payments (Details)
$ in Millions
Oct. 31, 2019
USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2020 $ 8.7
2021 9.5
2022 10.5
2023 11.0
2024 11.9
2025-2029 $ 66.7