Credit Facilities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Line of Credit Facility [Line Items]
Line of Credit Facility, Amount Outstanding	$ 22.5	$ 61.0
Senior Notes	45.5	45.5
Debt Instrument, Interest Rate, Stated Percentage	8.50%
Debt Instrument, Call Feature, Redemption Price Percentage of Principal	100.00%
Debt Issuance Cost	1.7
Debt and Capital Lease Obligations	68.0	106.5
Main line of credit facilities [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	105
Line of Credit Facility, Maximum Borrowing Capacity	270.0
INTL COM line of credit facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Amount Outstanding	0	0
HCO Syndicated line of credit facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	5.25%
Line of Credit Facility, Maximum Borrowing Capacity	140.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.625%
Line of Credit Facility, Amount Outstanding	15.0	55.0
Debt Issuance Cost	1.5
FCS Margin line of credit facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	5.25%
Line of Credit Facility, Maximum Borrowing Capacity	75.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Line of Credit Facility, Amount Outstanding	0	0
FMS Sub-note commodity line of credit facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	3.70%
Line of Credit Facility, Maximum Borrowing Capacity	30.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Line of Credit Facility, Amount Outstanding	$ 7.5	$ 6.0