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Physical Commodities Inventory
3 Months Ended
Dec. 31, 2011
Physical Commodities Inventory [Abstract]  
Inventory Disclosure [Text Block]
Physical Commodities Inventory
Physical commodities inventory is valued at the lower of cost or fair value, determined using the weighted-average cost method. Commodities in process include commodities in the process of being recycled. As of December 31, 2011 and September 30, 2011, $112.8 million and $159.4 million, respectively, of physical commodities inventory served as collateral under one of the Company’s credit facilities, as detailed further in Note 10. The carrying values of the Company’s inventory as of December 31, 2011 and September 30, 2011 are shown below. 
(in millions)
December 31,
2011
 
September 30, 2011
Commodities in process
$
1.7

 
$
2.4

Finished commodities
111.9

 
158.2

Physical commodities inventory
$
113.6

 
$
160.6

As a result of declining market prices for some commodities, the Company recorded lower of cost or market ("LCM") adjustments for physical commodities inventory of $3.0 million and $21.9 million as of December 31, 2011 and September 30, 2011, respectively. The adjustments are included within 'cost of sales of physical commodities' in the condensed consolidated income statements.