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Property and Equipment (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012
Property and equipment |  |  |
Property and equipment, gross | $ 722,100,000 | $ 663,100,000 |
Accumulated depreciation and amortization | (440,100,000) | (392,400,000) |
Property and equipment, net | 281,979,000 | 270,672,000 |
Depreciation expense | 69,100,000 | 70,700,000 | 77,100,000
Amortization of capitalized software costs | 7,300,000 | 6,400,000 | 6,200,000
Unamortized capitalized software costs | 39,900,000 | 29,600,000 | 24,100,000
Minimum [Member] |  |  |
Property and equipment |  |  |
Useful Lives | 3 years |  |
Maximum |  |  |
Property and equipment |  |  |
Useful Lives | 10 years |  |
Land, Buildings and Improvements [Member] |  |  |
Property and equipment |  |  |
Property and equipment, gross | 11,500,000 | 4,400,000 |
Useful Lives | 27 years |  |
Leasehold Improvements [Member] |  |  |
Property and equipment |  |  |
Property and equipment, gross | 299,700,000 | 289,900,000 |
Leasehold Improvements [Member] | Minimum [Member] |  |  |
Property and equipment |  |  |
Useful Lives | 2 years |  |
Leasehold Improvements [Member] | Maximum |  |  |
Property and equipment |  |  |
Useful Lives | 12 years |  |
Computer Equipment [Member] |  |  |
Property and equipment |  |  |
Property and equipment, gross | 302,600,000 | 257,000,000 |
Computer Equipment [Member] | Minimum [Member] |  |  |
Property and equipment |  |  |
Useful Lives | 3 years |  |
Computer Equipment [Member] | Maximum |  |  |
Property and equipment |  |  |
Useful Lives | 10 years |  |
Furniture and Fixtures [Member] |  |  |
Property and equipment |  |  |
Property and equipment, gross | 101,500,000 | 106,400,000 |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |
Property and equipment |  |  |
Useful Lives | 5 years |  |
Furniture and Fixtures [Member] | Maximum |  |  |
Property and equipment |  |  |
Useful Lives | 10 years |  |
Automobiles [Member] |  |  |
Property and equipment |  |  |
Property and equipment, gross | $ 6,800,000 | $ 5,400,000 |
Automobiles [Member] | Minimum [Member] |  |  |
Property and equipment |  |  |
Useful Lives | 3 years |  |
Automobiles [Member] | Maximum |  |  |
Property and equipment |  |  |
Useful Lives | 10 years |  |

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- Definition Unamortized costs incurred for development of computer software. + References No definition available. + Details
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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
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- Definition For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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