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Inventories (Tables) | 3 Months Ended
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Dec. 31, 2012
Inventory Disclosure [Abstract] |
Inventories | Inventories comprise the following:
|  | December 31, 2012 |  | September 30, 2012 |  | December 31, 2011
Non-utility LPG and natural gas |  | $ | 265.9 |  |  | $ | 240.7 |  |  | $ | 249.1 |
Gas Utility natural gas |  | 51.8 |  |  | 57.7 |  |  | 87.7 |
Materials, supplies and other |  | 60.8 |  |  | 58.5 |  |  | 53.9 |
Total inventories |  | $ | 378.5 |  |  | $ | 356.9 |  |  | $ | 390.7 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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