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Inventories | 3 Months Ended
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Dec. 31, 2017
Inventory Disclosure [Abstract] |
Inventories | Note 4 — Inventories Inventories comprise the following:
|  | December 31, 2017 |  | September 30, 2017 |  | December 31, 2016
Non-utility LPG and natural gas |  | $ | 216.4 |  |  | $ | 188.4 |  |  | $ | 150.9 |
Gas Utility natural gas |  | 34.6 |  |  | 39.5 |  |  | 25.8 |
Materials, supplies and other |  | 56.3 |  |  | 50.7 |  |  | 51.5 |
Total inventories |  | $ | 307.3 |  |  | $ | 278.6 |  |  | $ | 228.2 |
At December 31, 2017, UGI Utilities was a party to five principal storage contract administrative agreements (“SCAAs”) which have terms of up to three years. Pursuant to SCAAs, UGI Utilities has, among other things, released certain storage and transportation contracts for the terms of the SCAAs. UGI Utilities also transferred certain associated storage inventories upon commencement of the SCAAs, will receive a transfer of storage inventories at the end of the SCAAs, and makes payments associated with refilling storage inventories during the terms of the SCAAs. The historical cost of natural gas storage inventories released under the SCAAs, which represents a portion of Gas Utility’s total natural gas storage inventories, and any exchange receivable (representing amounts of natural gas inventories used by the other parties to the agreement but not yet replenished for which UGI Utilities has the rights), are included in the caption “Gas Utility natural gas” in the table above. As of December 31, 2017, UGI Utilities had SCAAs with Energy Services, LLC, the effects of which are eliminated in consolidation, and with a non-affiliate. The carrying value of gas storage inventories released under the SCAAs with the non-affiliate at December 31, 2017, September 30, 2017 and December 31, 2016, comprising 1.8 billion cubic feet (“bcf”), 2.3 bcf and 1.9 bcf of natural gas, was $5.1, $6.7 and $4.8, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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