Unconsolidated Affiliated Company (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Unconsolidated Affiliated Company
Ownership percentage in equity method investee	50.00%								50.00%
Operations:
Total revenue									$ 13.7	$ 11.9	$ 11.2
Net income									3.8	2.2	2.8
The Company's equity in net income	0.3	0.3	0.5	0.8	0.1	0.2	0.5	0.3	1.9	1.1	1.4
Financial Position:
Total assets	202.8				189.2				202.8	189.2
Total external borrowings	176.3				165.7				176.3	165.7
Total net assets	21.9				20.5				21.9	20.5
The Company's share of net assets	$ 10.9				$ 10.2				$ 10.9	$ 10.2