Quarterly Financial Information (Unaudited) (Notes)

12 Months Ended

Sep. 30, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

Quarterly Financial Information (Unaudited)

The Company has set forth certain quarterly unaudited financial data for the past two years in the tables below:

	For the 2016 Fiscal Quarter Ended
(in millions, except per share amounts)	September 30		June 30		March 31		December 31
Total revenues	$	2,777.6	$	4,868.5	$	3,708.9	$	3,399.9
Cost of sales of physical commodities	2,599.0		4,693.5		3,542.8		3,248.6
Operating revenues	178.6		175.0		166.1		151.3
Transaction-based clearing expenses	32.0		35.2		32.9		29.8
Introducing broker commissions	28.1		14.8		13.2		12.8
Interest expense	7.5		7.7		7.1		6.0
Net operating revenues	111.0		117.3		112.9		102.7
Compensation and other expenses	98.0		95.9		92.9		90.6
Gain on acquisition	6.2		—		—		—
Income before tax	19.2		21.4		20.0		12.1
Income tax expense	2.4		6.8		5.5		3.3
Net income	$	16.8	$	14.6	$	14.5	$	8.8
Net basic earnings per share	$	0.91	$	0.79	$	0.77	$	0.47
Net diluted earnings per share	$	0.90	$	0.78	$	0.76	$	0.46

	For the 2015 Fiscal Quarter Ended
(in millions, except per share amounts)	September 30		June 30		March 31		December 31
Total revenues	$	2,628.4	$	3,995.1	$	14,442.0	$	13,627.7
Cost of sales of physical commodities	2,449.7		3,843.5		14,285.5		13,490.2
Operating revenues	178.7		151.6		156.5		137.5
Transaction-based clearing expenses	31.3		30.2		31.8		29.4
Introducing broker commissions	15.1		13.1		12.3		12.2
Interest expense	5.0		4.9		4.5		2.7
Net operating revenues	127.3		103.4		107.9		93.2
Compensation and other expenses	98.1		86.2		89.8		79.6
Income before tax	29.2		17.2		18.1		13.6
Income tax expense	8.1		5.0		5.1		4.2
Net income	$	21.1	$	12.2	$	13.0	$	9.4
Net basic earnings per share	$	1.12	$	0.64	$	0.68	$	0.50
Net diluted earnings per share	$	1.09	$	0.62	$	0.67	$	0.49

As discussed further in Note 22, during fiscal year 2015, the Company transitioned the portion of its precious metals business conducted through its unregulated domestic subsidiary, INTL Commodities Inc., to its U.K. based broker-dealer subsidiary, INTL FCStone Ltd. Prior to the transfer, INTL Commodities Inc.’s precious metals sales and costs of sales were recorded on a gross basis in accordance with the Revenue Recognition Topic of the ASC. Subsequent to the transfer, INTL FCStone Ltd’s precious metals sales and cost of sales are presented on a net basis and included as a component of ‘trading gains, net’ on the consolidated income statements, in accordance with U.S GAAP accounting requirements for broker-dealers. Precious metals sales and cost of sales for subsidiaries that are not broker-dealers continue to be recorded on a gross basis.