Unconsolidated Affiliated Company (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Unconsolidated Affiliated Company
Ownership percentage in equity method investee	50.00%								50.00%
Operations:
Total revenue									$ 11.3	$ 13.7	$ 11.9
Net income									2.4	3.8	2.2
The Company's equity in net income	$ 0.3	$ 0.1	$ 0.4	$ 0.4	$ 0.3	$ 0.3	$ 0.5	$ 0.8	1.2	1.9	$ 1.1
Financial Position:
Total assets	189.2				202.8				189.2	202.8
Total external borrowings	163.2				176.3				163.2	176.3
Total net assets	21.0				21.9				21.0	21.9
The Company's share of net assets	$ 10.5				$ 10.9				$ 10.5	$ 10.9