Segment Analysis (Tables)

6 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

Information for the reportable segments is shown in accordance with the Segment Reporting Topic of the ASC as follows:

	Three Months Ended March 31,				Six Months Ended March 31,
(in millions)	2024		2023		2024		2023
Total revenues:
Commercial	$	21,479.1	$	15,450.7	$	40,457.1	$	27,744.2
Institutional	463.4		362.5		899.1		706.0
Retail	111.3		304.6		213.0		620.8
Payments	49.3		49.8		109.9		105.2
Corporate	14.4		2.5		23.6		15.3
Eliminations	(11.4)		(9.1)		(23.6)		(18.9)
Total	$	22,106.1	$	16,161.0	$	41,679.1	$	29,172.6
Operating revenues:
Commercial	$	200.5	$	220.1	$	398.9	$	402.5
Institutional	463.4		362.5		899.1		706.0
Retail	102.0		78.6		194.5		149.1
Payments	49.3		49.8		109.9		105.2
Corporate	14.4		2.5		23.6		15.3
Eliminations	(11.4)		(9.1)		(23.6)		(18.9)
Total	$	818.2	$	704.4	$	1,602.4	$	1,359.2
Net operating revenues (loss):
Commercial	$	164.2	$	185.1	$	327.6	$	337.8
Institutional	149.8		137.9		298.4		281.1
Retail	74.3		50.8		141.3		94.7
Payments	46.8		47.4		105.0		100.7
Corporate	(12.8)		(21.8)		(28.4)		(32.9)
Total	$	422.3	$	399.4	$	843.9	$	781.4
Net contribution:
(Revenues less cost of sales of physical commodities, transaction-based clearing expenses, variable compensation, introducing broker commissions and interest expense)
Commercial	$	119.3	$	140.9	$	245.7	$	256.6
Institutional	102.5		89.3		202.7		183.9
Retail	69.9		48.4		132.5		87.6
Payments	37.3		38.1		84.9		80.2
Total	$	329.0	$	316.7	$	665.8	$	608.3
Segment income:
(Net contribution less non-variable direct segment costs)
Commercial	$	85.6	$	102.9	$	172.8	$	185.7
Institutional	61.3		55.8		126.5		117.8
Retail	33.2		4.8		61.9		0.6
Payments	24.6		15.9		59.6		48.2
Total	$	204.7	$	179.4	$	420.8	$	352.3
Reconciliation of segment income to income before tax:
Segment income	$	204.7	$	179.4	$	420.8	$	352.3
Net operating revenue (loss) with Corporate	(12.8)		(21.8)		(28.4)		(32.9)
Overhead costs and expenses	(119.6)		(100.1)		(224.4)		(189.8)
Gain on acquisition	—		—		—		23.5
Income before tax	$	72.3	$	57.5	$	168.0	$	153.1
(in millions)	As of March 31, 2024		As of September 30, 2023
Total assets:
Commercial	$	5,154.8	$	4,676.3
Institutional	17,684.1		15,059.3
Retail	1,111.8		1,014.2
Payments	433.1		376.6
Corporate	1,267.2		812.3
Total	$	25,651.0	$	21,938.7