Employee Benefits (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Defined benefit plan, contributions by employer	$ 2.5	$ 2.5
Defined benefit plan, estimated future employer contributions in current fiscal year	$ 7.5
Expected rate of return on plan assets for determining net periodic pension cost	8.00%