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Employee Benefits (Schedule of Estimated Future Benefit Payments) (Details)
$ in Millions
Oct. 31, 2017
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2018 $ 3.3
2019 3.8
2020 4.3
2021 4.8
2022 5.4
2023-2027 $ 36.1