Other Expenses (Tables)

12 Months Ended

Sep. 30, 2014

Other Expenses [Abstract]

Schedule of Other Operating Cost and Expense, by Component [Table Text Block]

Other expenses for the years ended September 30, 2014, 2013 and 2012 are comprised of the following:

	Year Ended September 30,
(in millions)	2014			2013		2012
Contingent consideration, net(1)	(2.0		)	3.0		2.9
Insurance	1.6			1.7		1.6
Advertising, meetings and conferences	3.1			2.3		2.4
Non-trading hardware and software maintenance and software licensing	3.8			2.8		2.2
Office supplies and printing	1.1			1.2		1.3
Other clearing related expenses	1.2			1.6		1.7
Other non-income taxes	3.9			3.8		4.0
Other	5.7			6.7		5.3
Total other expenses	$	18.4		$	23.1	$	21.4

(1) Contingent consideration includes remeasurement of contingent liabilities related to business combinations accounted for in accordance with the provisions of the Business Combinations Topic of the ASC (see Note 3).