Condensed Consolidated Income Statements - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Sales of physical commodities	$ 10,978.0	$ 6,295.8
Principal gains, net	112.5	94.9
Commission and clearing fees	87.2	97.4
Consulting, management, and account fees	21.3	19.1
Interest income	46.0	45.0
Total revenues	11,245.0	6,552.2
Cost of sales of physical commodities	10,968.2	6,287.5
Operating revenues	276.8	264.7
Transaction-based clearing expenses	46.3	50.1
Introducing broker commissions	26.2	32.6
Interest expense	33.8	33.0
Net operating revenues	170.5	149.0
Compensation and other expenses:
Compensation and benefits	104.0	89.1
Trading systems and market information	10.4	9.2
Occupancy and equipment rental	5.0	4.4
Professional fees	6.0	5.3
Travel and business development	4.5	3.8
Non-trading technology and support	6.0	4.2
Depreciation and amortization	3.9	2.9
Communications	1.6	1.3
Bad debts	0.0	0.3
Recovery of bad debt on physical coal	0.0	(2.4)
Other	7.5	6.5
Total compensation and other expenses	148.9	124.6
Other gain	0.1	0.0
Income before tax	21.7	24.4
Income tax expense	5.4	6.2
Net income	$ 16.3	$ 18.2
Earnings per share:
Basic	$ 0.85	$ 0.96
Diluted	$ 0.84	$ 0.94
Weighted-average number of common shares outstanding:
Basic	18,750,270	18,659,748
Diluted	19,074,562	18,993,046