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Employee Benefits (Schedule of Estimated Future Benefit Payments) (Details)
$ in Millions
Oct. 31, 2018
USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2019 $ 3.7
2020 4.2
2021 4.7
2022 5.3
2023 6.0
2024-2028 $ 40.0