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Other Expenses (Notes)
 12 Months Ended
Sep. 30, 2018
Other Expenses [Abstract]  
Other Expenses [Text Block]
Other Expenses
Other expenses for the years ended September 30, 2018, 2017, and 2016 are comprised of the following:
 
Year Ended September 30,
(in millions)
2018
 
2017
 
2016
Contingent consideration, net(1)
$
—

 
$
0.1

 
$
0.4

Insurance
2.6

 
2.7

 
2.1

Advertising, meetings and conferences
6.2

 
4.0

 
5.1

Office supplies and printing
1.7

 
2.1

 
1.2

Other clearing related expenses
2.5

 
2.6

 
1.3

Other non-income taxes
4.9

 
4.6

 
4.3

Other
8.4

 
9.8

 
7.9

Total other expenses
$
26.3

 
$
25.9

 
$
22.3

(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).