Condensed Consolidated Income Statements (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Sales of physical commodities	$ 8,329.4	$ 11,662.1	$ 16,130.6	$ 23,675.2
Trading gains, net	64.7	53.1	116.4	126.3
Commission and clearing fees	47.3	43.4	89.5	83.4
Consulting and management fees	9.5	7.7	21.5	16.0
Interest income	1.9	2.8	3.3	5.6
Other income	0.1	0.2	0.3	0.3
Total revenues	8,452.9	11,769.3	16,361.6	23,906.8
Cost of sales of physical commodities	8,323.7	11,654.4	16,119.5	23,673.5
Operating revenues	129.2	114.9	242.1	233.3
Clearing and related expenses	27.7	28.6	52.9	53.2
Introducing broker commissions	12.8	9.6	24.4	18.0
Interest expense	2.8	1.6	5.5	3.7
Net operating revenues	85.9	75.1	159.3	158.4
Compensation and other expenses:
Compensation and benefits	52.7	51.1	99.0	97.0
Communication and data services	6.2	5.8	12.4	11.0
Occupancy and equipment rental	3.2	3.2	6.2	6.1
Professional fees	4.1	3.2	8.4	6.8
Travel and business development	2.0	2.2	4.8	5.0
Depreciation and amortization	1.7	2.3	3.6	4.1
Bad debts and impairments	0.4	(0.3)	0.7	0.1
Other	5.3	5.9	10.0	12.6
Total compensation and other expenses	75.6	73.4	145.1	142.7
Income from continuing operations, before tax	10.3	1.7	14.2	15.7
Income tax expense	2.6	0	4.1	3.9
Net income from continuing operations	7.7	1.7	10.1	11.8
(Loss) income from discontinued operations, net of tax	(0.2)	(0.2)	(0.1)	3.0
Net income	$ 7.5	$ 1.5	$ 10.0	$ 14.8
Basic earnings per share:
Income from continuing operations	$ 0.40	$ 0.09	$ 0.53	$ 0.62
(Loss) income from discontinued operations	$ (0.01)	$ (0.01)	$ (0.01)	$ 0.16
Net income per common share	$ 0.39	$ 0.08	$ 0.52	$ 0.78
Diluted earnings per share:
Income from continuing operations	$ 0.40	$ 0.09	$ 0.52	$ 0.61
(Loss) income from discontinued operations	$ (0.01)	$ (0.01)	$ (0.01)	$ 0.15
Net income per common share	$ 0.39	$ 0.08	$ 0.51	$ 0.76
Weighted-average number of common shares outstanding:
Basic	18,609,550	18,380,971	18,627,383	18,327,517
Diluted	18,955,128	18,834,592	19,274,153	18,821,799