Segment and Geographic Information (Tables)

12 Months Ended

Sep. 30, 2013

Segment Analysis [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Information concerning operations in these segments of business is shown in accordance with the Segment Reporting Topic of the ASC as follows:

	Year Ended September 30,
(in millions)	2013		2012			2011
			(As Restated)			(As Restated)
Total revenues:
Commodity and Risk Management Services	$	43,218.2	$	67,627.0		$	72,667.8
Foreign Exchange	66.9		62.6			59.3
Securities	61.1		39.9			30.5
Clearing and Execution Services	100.8		93.8			66.1
Other	314.1		136.2			67.2
Corporate unallocated	7.2		(0.2		)	0.4
Total	$	43,768.3	$	67,959.3		$	72,891.3
Operating revenues (loss):
Commodity and Risk Management Services	$	221.7	$	242.5		$	248.5
Foreign Exchange	66.9		62.6			59.3
Securities	61.1		39.9			30.5
Clearing and Execution Services	100.8		93.8			66.1
Other	20.7		15.6			14.3
Corporate unallocated	7.2		(0.2		)	0.4
Total	$	478.4	$	454.2		$	419.1
Net contribution:
(Revenues less cost of sales, transaction-based clearing expenses, variable bonus compensation, introducing broker commissions and interest expense):
Commodity and Risk Management Services	$	131.1	$	139.5		$	147.5
Foreign Exchange	44.0		41.3			37.1
Securities	30.5		19.8			16.5
Clearing and Execution Services	15.3		14.3			14.3
Other	13.2		10.3			10.0
Total	$	234.1	$	225.2		$	225.4
Segment income:
(Net contribution less non-variable direct segment costs):
Commodity and Risk Management Services	$	59.6	$	66.2		$	89.4
Foreign Exchange	29.8		28.3			28.0
Securities	13.9		4.5			1.9
Clearing and Execution Services	1.9		2.2			4.9
Other	9.1		5.4			5.6
Total	$	114.3	$	106.6		$	129.8
Reconciliation of segment income to income from continuing operations, before tax:
Segment income	$	114.3	$	106.6		$	129.8
Costs not allocated to operating segments	91.7		90.8			74.4
Income from continuing operations, before tax	$	22.6	$	15.8		$	55.4
(in millions)	As of September 30, 2013		As of September 30, 2012			As of September 30, 2011
			(As Restated)			(As Restated)
Total assets:
Commodity and Risk Management Services	$	1,105.1	$	1,439.7		$	1,534.8
Foreign Exchange	145.0		124.5			146.1
Securities	198.5		88.7			104.8
Clearing and Execution Services	1,246.4		1,090.9			734.4
Other	37.3		110.8			43.4
Corporate unallocated	115.7		98.4			68.5
Total	$	2,848.0	$	2,953.0		$	2,632.0

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

Information regarding revenues and operating revenues for the years ended September 30, 2013, 2012 and 2011, and information regarding long-lived assets (defined as property, equipment, leasehold improvements and software) as of September 30, 2013, 2012 and 2011 in geographic areas were as follows:

	Year Ended September 30,
(in millions)	2013		2012		2011
			(As Restated)		(As Restated)
Total revenues:
United States	$	29,062.0	$	53,398.0	$	48,165.3
Europe	65.6		69.9		35.1
South America	51.3		58.2		53.3
Asia	14,582.1		14,420.8		24,627.0
Other	7.3		12.4		10.6
Total	$	43,768.3	$	67,959.3	$	72,891.3
Operating revenues:
United States	$	333.9	$	293.8	$	298.0
Europe	65.6		69.9		35.1
South America	51.3		58.2		53.3
Asia	20.3		19.9		27.6
Other	7.3		12.4		5.1
Total	$	478.4	$	454.2	$	419.1
(in millions)	As of September 30, 2013		As of September 30, 2012		As of September 30, 2011
Long-lived assets, as defined:
United States	$	9.1	$	11.5	$	10.7
Europe	5.4		3.8		2.0
South America	2.4		2.8		1.6
Asia	0.5		0.7		0.6
Other	0.1		0.1		0.1
Total	$	17.5	$	18.9	$	15.0