Physical Commodities Inventory (Notes)	12 Months Ended
Physical Commodities Inventory (Notes)	Sep. 30, 2014
Physical Commodities Inventory [Abstract]
Inventory Disclosure [Text Block]	Physical Commodities Inventory The carrying values of the Company’s inventory, which consist of all finished commodities, are $40.0 million and $59.0 million as of September 30, 2014 and 2013, respectively. As a result of declining market prices for some commodities towards the end of the fiscal year, the Company has recorded LCM adjustments for physical commodities inventory of $1.0 million and $0.9 million as of September 30, 2014 and 2013, respectively. The adjustments are included in ‘cost of sales of physical commodities’ in the consolidated income statements.

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

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