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Properties, including oil and gas properties, net Properties, including oil and gas properties, net (Tables) | 12 Months Ended
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Sep. 30, 2014
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Properties, including oil and natural gas properties, net, consist of the following:
| September 30,
| 2014 |  | 2013
Oil and natural gas properties (full cost accounting method) |  |  |
Unproved oil and natural gas properties and development costs not being amortized | $ | 20.2 |  |  | $ | 36.4 |
Proved developed and undeveloped oil and natural gas properties | 493.9 |  |  | 546.0 |
Less: Accumulated depletion | (68.4 | ) |  | (30.1 | )
Total oil and natural gas properties, net | 445.7 |  |  | 552.3 |
Other properties |  |  |
Land, buildings and improvements | 166.9 |  |  | 169.8 |
Gas gathering assets | 21.1 |  |  | 21.1 |
Machinery, equipment and other | 496.3 |  |  | 420.6 |
Capitalized leases | 99.3 |  |  | 67.7 |
Construction in progress | 32.3 |  |  | 46.8 |
Total other properties, at cost | 815.9 |  |  | 726.0 |
Less: Accumulated depreciation | 353.0 |  |  | 285.0 |
Total other properties, net | 462.9 |  |  | 441.0 |
Total properties, including oil and natural gas properties, net | $ | 908.6 |  |  | $ | 993.3 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + 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 b -Article 5 + Details
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