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Property and Equipment, net (Notes) | 12 Months Ended
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Sep. 30, 2018
Property and Equipment, net [Abstract] |
Property, Plant and Equipment Disclosure [Text Block] | Property and Equipment, net Property and equipment are stated at cost, and reported net of accumulated depreciation on the consolidated balance sheets. Depreciation on property and equipment is calculated using the straight-line method over the estimated useful lives of the assets. The estimated useful lives of property and equipment range from 3 to 10 years. During the fiscal years ended September 30, 2018, 2017, and 2016, depreciation expense was $9.4 million, $7.0 million and $6.6 million, respectively. A summary of property and equipment, at cost less accumulated depreciation as of September 30, 2018 and 2017 is as follows:
(in millions) | September 30, 2018 |  | September 30, 2017
Property and equipment: |  |  |
Furniture and fixtures | $ | 8.7 |  |  | $ | 7.2 |
Software | 30.5 |  |  | 25.3 |
Equipment | 24.7 |  |  | 22.6 |
Leasehold improvements | 17.0 |  |  | 15.4 |
Total property and equipment | 80.9 |  |  | 70.5 |
Less accumulated depreciation | (38.5 | ) |  | (31.8 | )
Property and equipment, net | $ | 42.4 |  |  | $ | 38.7 |

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- Definition Property and Equipment, net [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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