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Other Expenses (Notes) | 6 Months Ended
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Mar. 31, 2017
Other Expenses [Abstract] |
Other Expenses [Text Block] | Other Expenses Other expenses for the three and six months ended March 31, 2017 and 2016 consisted of the following:
| Three Months Ended March 31, |  | Six Months Ended March 31,
(in millions) | 2017 |  | 2016 |  | 2017 |  | 2016
Contingent consideration, net | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.3 |
Insurance | 0.8 |  |  | 0.3 |  |  | 1.3 |  |  | 0.7 |
Advertising, meetings and conferences | 1.2 |  |  | 2.3 |  |  | 2.1 |  |  | 3.0 |
Non-trading hardware and software maintenance and software licensing | 2.8 |  |  | 1.3 |  |  | 5.7 |  |  | 2.8 |
Office supplies and printing | 0.5 |  |  | 0.3 |  |  | 1.1 |  |  | 0.6 |
Other clearing related expenses | 0.3 |  |  | 0.3 |  |  | 0.7 |  |  | 0.5 |
Other non-income taxes | 1.2 |  |  | 1.1 |  |  | 2.3 |  |  | 2.1 |
Other | 2.5 |  |  | 1.7 |  |  | 4.6 |  |  | 3.7 |
Total other expenses | $ | 9.4 |  |  | $ | 7.4 |  |  | $ | 17.9 |  |  | $ | 13.7 |

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3,6,7,9) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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