Note 4 — Inventories

Inventories comprise the following:



	June 30, 2018		September 30, 2017		June 30, 2017
Non-utility LPG and natural gas	$	177.0	$	188.4	$	135.4
Gas Utility natural gas	18.6		39.5		21.8
Materials, supplies and other	57.6		50.7		58.9
Total inventories	$	253.2	$	278.6	$	216.1

At June 30, 2018, UGI Utilities was a party to five principal storage contract administrative agreements (“SCAAs”) which have terms of up to three years. Pursuant to the 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 June 30, 2018, 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 June 30, 2018, September 30, 2017 and June 30, 2017, comprising 1.2 billion cubic feet (“bcf”), 2.3 bcf and 1.1 bcf of natural gas, was $2.7, $6.7, and $3.5, respectively.