Consolidated Income Statements - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Revenues:
Sales of physical commodities	$ 14,112.0	$ 34,089.9	$ 33,546.4
Trading gains, net	321.2	328.6	244.5
Commission and clearing fees	224.3	192.5	180.7
Consulting and management fees	42.0	42.5	42.1
Interest income	55.2	39.4	8.0
Other Income	0.2	0.3	0.7
Total revenues	14,754.9	34,693.2	34,022.4
Cost of sales of physical commodities	14,083.9	34,068.9	33,531.5
Operating revenues	671.0	624.3	490.9
Transaction-based clearing expenses	129.9	122.7	108.5
Introducing broker commissions	68.9	52.7	49.9
Interest expense	28.3	17.1	10.5
Net operating revenues	443.9	431.8	322.0
Compensation and other expenses:
Compensation and benefits	263.9	251.1	201.9
Communication and data services	32.7	28.1	25.8
Occupancy and equipment rental	13.3	13.5	12.3
Professional fees	14.0	12.5	14.9
Travel and business development	11.5	10.5	9.9
Depreciation and amortization	8.2	7.2	7.3
Bad debts and impairments	4.4	7.3	5.5
Other	29.4	23.5	18.4
Total compensation and other expenses	377.4	353.7	296.0
Gain on acquisition	6.2	0.0	0.0
Income from continuing operations, before tax	72.7	78.1	26.0
Income tax expense	18.0	22.4	6.4
Net income from continuing operations	54.7	55.7	19.6
Loss from discontinued operations, net of tax	0.0	0.0	(0.3)
Net income	$ 54.7	$ 55.7	$ 19.3
Basic earnings per share:
Income from continuing operations	$ 2.94	$ 2.94	$ 1.03
Loss from discontinued operations	0.00	0.00	(0.02)
Net income per common share	2.94	2.94	1.01
Diluted earnings per share:
Income from continuing operations	2.90	2.87	1.00
Loss income from discontinued operations	0.00	0.00	(0.02)
Net income per common share	$ 2.90	$ 2.87	$ 0.98
Weighted-average number of common shares outstanding:
Basic	18,410,561	18,525,374	18,528,302
Diluted	18,625,372	18,932,235	19,132,302